MAX9257AEVKIT [MAXIM]

On-Board Emulated Camera;


型号：	MAX9257AEVKIT
厂家：	MAXIM INTEGRATED PRODUCTS
描述：	On-Board Emulated Camera
文件：	总24页 (文件大小：1597K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

19-6020; Rev 0; 9/11

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

General Description

Features

o USB Connectivity

The MAX9257A/MAX9258A evaluation kit (EV kit) con-

sists of a MAX9257A/MAX9258A evaluation board and

software. The EV kit is a fully assembled and tested PCB

that evaluates the MAX9257A serializer and the

MAX9258A deserializer (SerDes). The EV kit also emu-

lates an electronic control unit (ECU) and a camera. The

MAX9258A receives programming instructions from the

emulated ECU during the control channel and transmits

to the MAX9257A over the serial video link. The instruc-

tions can program or update the MAX9258A,

MAX9257A, or an external peripheral device such as a

camera. The MAX9257A communicates with the periph-

o On-Board Emulated ECU

o On-Board Emulated Camera

o On-Board Connectors for Connection with Pattern

Generators or Video Equipment

o Flexible On-Board Video Pixel Clock Generator

o Single 5V Power Supply

o Windows 2000/XP- and Windows Vista

(32-Bit)-Compatible Evaluation Software

o Proven PCB Layout

o Fully Assembled and Tested

eral device with either an I C or UART interface.

Ordering Information

The MAX9257A/MAX9258A EV kit includes Windows

PART

TYPE

2000/XP- and Windows Vista -compatible software that

provides a simple graphical user interface (GUI) for exer-

cising the features of the MAX9257A and MAX9258A.

The EV kit is connected to a PC through the USB.

MAX9257AEVKIT+

MAX9258AEVKIT+

EV Kit

+Denotes lead(Pb)-free and RoHS compliant.

Note: The MAX9257A/MAX9258A EV kit can be ordered using

either part number.

Windows and Windows Vista are registered trademarks of

Microsoft Corp.

Component List

DESIGNATION

QTY

DESCRIPTION

Red LED (0603)

DESIGNATION

QTY

DESCRIPTION

C1–C6,

C16–C19,

C23–C45,

C50–C55,

C59–C65,

C75–C80,

C84–C101,

C106–C111,

C114, C115,

C116

470Ω at 100MHz ferrite beads, DC

1000mA (0603)

Murata BLM18PG471SH1B

FB1–FB10

0.1µF 10ꢀ, 16V X7R ceramic

capacitors (0402)

TDK C1005X7R1C104K

J1, J6

J2, J7

40-pin (2 x 20) header sockets

LVDS connectors

JAE Electronics MX39004NQ1

USB type-B right-angle female

receptacle

1nF 5ꢀ, 25V C0G ceramic

capacitors (0402)

TDK C1005C0G1E102J

Not installed, dual-row 10-pin

(2 x 5) headers

C7–C12,

C66–C72

J4, J9

J5, J10

12-pin (2 x 6) header sockets

15pF 5ꢀ, 50V C0G ceramic

capacitors (0402)

TDK C1005C0G1H150J

C20, C21, C81,

C82

Not installed, USB type-B right-

angle female receptacle

JU1–JU10,

JU15, JU16,

JU19–JU23,

JU30, JU31

1µF 10ꢀ, 16V X7R ceramic

capacitors (0603)

TDK C1608X7R1C105K

C22, C83

2-pin headers

100µF 20ꢀ, 6.3V X5R ceramic

capacitors (1210)

TDK C3225X5R0J107M

C46–C49,

C102–C105

JU11, JU14,

JU17, JU18,

JU24–JU29

3-pin headers

10µF 10ꢀ, 10V X5R ceramic

capacitors (1206)

TDK C3216X5R1A106K

C56, C57, C112,

C113

n-channel MOSFETs (SOT23)

Fairchild 2N7002

Q1, Q2

R1, R2, R46, R47

49.9Ω 1ꢀ resistors (0402)

D1, D3, D4

Green LEDs (0603)

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

MAX9257A/MAX9258A Evaluation Kit

Component List (continued)

DESIGNATION QTY

DESCRIPTION

DESIGNATION QTY

DESCRIPTION

Deserializer ꢁ48 LQFPꢂ

Maxim MAX9258AGCM/V+

R3, R4,

R15–R19, R48,

R49, R63–R67,

10kΩ 5ꢀ resistors ꢁ0402ꢂ

Serializer ꢁ40 TQFN-EPꢂ

Maxim MAX9257AGTL/V+

R71

R5, R21, R22

R8, R68

1kΩ 5ꢀ resistors ꢁ0402ꢂ

100kΩ 1ꢀ resistors ꢁ0402ꢂ

200kΩ 1ꢀ resistors ꢁ0402ꢂ

500mA LDOs ꢁ8 TQFNꢂ

Maxim MAX1935ETA+

U3, U11

U4, U12

R9, R69

3.3V, 1A LDOs ꢁ16 TSSOP-EPꢂ

Maxim MAX8869EUE33+

R10, R23, R24,

R54

160Ω 5ꢀ resistors ꢁ0402ꢂ

22Ω 5ꢀ resistors ꢁ0402ꢂ

2kΩ 5ꢀ resistors ꢁ0402ꢂ

3.3V, 200mA LDOs ꢁ6 SOT23ꢂ

Maxim MAX8881EUT33+

U5, U13

U6, U14

U7, U15

R11, R12, R50,

R51

Microcontrollers ꢁ64 QFN-EPꢂ

Serial programmable clock

generators ꢁ16 TSSOPꢂ

R13, R14, R44,

R45, R52, R53

R20, R55, R56

R25–R43, R70

100Ω 5ꢀ resistors ꢁ0402ꢂ

Cyclone II FPGAs ꢁ144 TQFPꢂ

Altera EP2C5T144C6N

U8, U16

U9, U17

Not installed, resistors ꢁ0402ꢂ

FPGA serial-configuration devices

ꢁ8 SOꢂ

Altera EPCS4SI8N

Common-mode EMI chokes

Würth 744231091

T1, T2

TP1, TP4, TP5

Test points ꢁredꢂ

Y1, Y2

—

8MHz crystals ꢁHCM49ꢂ

TP2, TP3, TP6,

TP7

Not installed, test points

Black Test points

Red Test points

2-meter LVDS cable

JAE Electronics MX39B-FF-L2000

TP8, TP15

—

USB high-speed A-to-B cable, 6ft

Shunts

TP9–TP14,

TP16–TP21

PCB: MAX9257A/8A EVALUATION Kit

Evluates:7/MX9258A

MAX9257A/MAX9258A EV Kit Files

FILE

DESCRIPTION

INSTALL.EXE

Installs the EV kit files on your computer

MAX9257A_8A.EXE Application program

ATUSBHID.DLL

UNINST.INI

USB software library

Uninstalls the EV kit software

Component Suppliers

SUPPLIER

PHONE

WEBSITE

Altera Corp.

800-800-3753

48-32-282-82-66

949-753-2600

770-436-1300

847-803-6100

201-7850-8800

www.altera.com

Digital Core Design

JAE Electronics, Inc.

www.digitalcoredesign.com

www.jae.com

Murata Electronics North America, Inc.

TDK Corp.

www.murata-northamerica.com

www.component.tdk.com

www.we-online.com

Würth Electronik GmbH & Co. KG

Note: Indicate that you are using the MAX9257A and MAX9258A when contacting these component suppliers.

_______________________________________________________________________________________

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

12ꢂ Press the Yes button on the popup window ꢁFigure

Quick Start

Recommended Equipment

• MAX9257A/MAX9258A EV kit ꢁUSB cable includedꢂ

• User-supplied Windows 2000/XP- or Windows Vista-

compatible PC with a spare USB port

1ꢂ, which verifies if the ECU remotely wakes up the

MAX9257A. If the REM pin of the MAX9257A is set

to high, the ECU should wake up the MAX9257A by

setting the REG08 PD bit to low. If the REM pin of

the MAX9257A is set to low, the MAX9257A is pow-

ered up when V

is applied.

• 5V, 500mA power supply

• 4-channel oscilloscope

Refer to the MAX9257A/MAX9258A IC data sheet while

using this EV kit for a detailed description of the SerDes

pair features.

Note: In the following sections, software-related items

are identified by bolding. Text in bold refers to items

directly from the EV kit software. Text in bold and under-

lined refers to items from the Windows operating system.

Procedure

The EV kit is fully assembled and tested. Follow the

steps below to verify board operation. Caution: Do not

turn on the power supply until all connections are

completed.

Figure 1. MAX9257A/MAX9258A Evaluation Kit Software—

MAX9257 REM Status

13ꢂ The next popup window ꢁFigure 2ꢂ asks if you want

to load a previous EV kit setting from a file. If this

is the first time the software is run, you can choose

from three EV kit setting files included with

the software: NeverComeBackSettings.txt,

FiniteCTOSettings.txt, or I2CSettings.txt. Press

the No button.

1ꢂ Visit www.maxim-ic.com/evkitsoftware to down-

load the latest version of the EV kit software,

9257A_8ARxx.ZIP. Save the EV kit software to a

temporary folder and uncompress the ZIP file.

2ꢂ Install the EV kit software on your computer by run-

ning the INSTALL.EXE program inside the tempo-

rary folder. The program files are copied and icons

are created in the Windows Start | Programs

menu.

3ꢂ Verify that all the jumpers are set in their default

positions. See Table 1 for default shunt positions.

4ꢂ Connect the 5V power supply to the +5V and GND

pads on both sides of the EV board. Keep the

power off.

Figure 2. MAX9257A/MAX9258A Evaluation Kit Software—

Load Previous EV Kit Settings

5ꢂ Connect the JAE LVDS cable between J2 and J7.

6ꢂ Connect Ch1 of the oscilloscope to J1-35 ꢁECU TX

lineꢂ.

14ꢂ Verify that the software main window shows up next

ꢁFigure 3ꢂ.

7ꢂ Connect Ch2 of the oscilloscope to J1-37 ꢁECU RX

lineꢂ.

15ꢂ Verify that the Hardware: Connected message is

displayed on the status bar of the software main

window. This indicates the proper connection of the

EV kit.

8ꢂ Connect Ch3 of the oscilloscope to J5-12

ꢁMAX9258A CCEN pinꢂ.

9ꢂ Connect the USB cable between the PC and J3

ꢁAttention: not J8ꢂ.

16ꢂ Press the ECU Wakes Up MAX9257A button on the

ECU Control tab sheet.

10ꢂ Turn on the 5V power supply. Verify that D3 and D4

green LEDs are lit.

17ꢂ Click on the Deserializer MAX9258A tab to move to

the Deserializer MAX9258A tab sheet ꢁFigure 4ꢂ.

11ꢂ Start the MAX9257A/MAX9258A program by open-

ing its icon in the Start menu.

_______________________________________________________________________________________

MAX9257A/MAX9258A Evaluation Kit

18ꢂ Press the Read MAX9258A & 9257A button to read

box. Similarly, the ECU commands can be read by typ-

all the registers of the MAX9258A and MAX9257A.

ing commands in the ECU Reads N Bytes from

MAX9257A/58A/Camera edit box. The write or read

commands are not executed until the corresponding

Write or Read button is pressed. Follow the instructions

displayed on the software GUI.

19ꢂ Set both MAX9258A REG03 and MAX9257A REG03

ETOCNT to 0100 by selecting the ETOCNT drop-

down list. Press the Write button on the right of the

Reg03 controls.

When the EV kit is powered up the first time, and the

MAX9257A is configured to be powered up remotely by

the ECU ꢁREM is highꢂ, press the ECU Wakes Up

MAX9257A button to wake up the MAX9257A. Refer to

the Remote Power-Up of the MAX9257A ꢁREM = Pulled

20ꢂ Set both MAX9258A REG07 CTO and MAX9257A

REG08 CTO to 111 by selecting the CTO drop-

down list. Press the Write button on the right of the

Reg07 controls.

21ꢂ Click on the Serializer MAX9257A tab to move to

the Serializer MAX9257A tab sheet ꢁFigure 5ꢂ.

Up to V ꢂ section in the MAX9257A/MAX9258A IC

data sheet for timing requirements of the remote wake-

up.

22ꢂ Enable the MAX9257A REG04 SEREN bit by select-

ing enable in the SEREN drop-down list. Press the

Write button on the right of the Reg04 controls.

Check the Prefix a SYNC frame everytime a

read/write command is sent checkbox when a SYNC

frame is desired before sending a command to the

MAX9258A, MAX9257A, or the camera. A SYNC frame

is needed only once every control channel.

23ꢂ Click on the Camera Control tab to move to the

Camera Control tab sheet ꢁFigure 6ꢂ.

24ꢂ Press the Slow Blink D4 button and verify that LED

Check the Postfix an END frame everytime a read/write

command is sent checkbox when an END frame is

desired after sending a command to the MAX9258A,

MAX9257A, or the camera. Do not send END frame after

a READ command. In a real application, the ECU can

send END frame after the READ operation is completed.

D4 flashes for about five seconds.

25ꢂ Press the Enable PCLK_IN/HSYNC_IN/VSYNC_IN

button and verify that LOCK indicator LED D1

turns on.

26ꢂ Use the oscilloscope to check the waveforms dur-

ing the evaluation.

Press the Reset the EVKIT button to reset the EV kit

software and hardware. The user must manually dis-

connect and reconnect the power supply to reset the

EV kit hardware.

Detailed Description of Software

The MAX9257A/MAX9258A EV kit software contains

four tab sheets: ECU Control, Deserializer

MAX9258A, Serializer MAX9257A, and Camera

Control.

Deserializer MAX9258A Tab

On the Deserializer MAX9258A tab sheet ꢁFigure 4ꢂ, the

ECU can write or read all registers on the MAX9258A by

pressing the Write or Read buttons on the right of each

sheet for the definition of each register.

Evluates:7/MX9258A

Warning: When the MAX9257A/MAX9258A UART baud

rate ranges are changed, they do not take effect until

the next control channel is entered. The ECU baud rate

should not be changed during the current control chan-

nel.

Four registers on each of the MAX9258A and

MAX9257A should have the same values. They should

be configured simultaneously for the SerDes pair to

work properly. Check the Write Both 9258A&9257A

checkbox to enable the write operation of the two

devices on the same control channel.

ECU Control Tab

The ECU Control tab sheet ꢁFigure 3ꢂ lets the ECU con-

figure the MAX9258A, MAX9257A, and the camera.

The ECU UART baud rate can be selected by choosing

the appropriate baud rate in the Select ECU UART

Baud Rate drop-down list. By default, the UART speed

is 400kbps. In base mode, the UART baud rate should

not be higher than 4.25Mbps.

On the bottom-left side of the software window, press

the Reset MAX9258A GUI button to set all of the GUI

values to the MAX9258A power-on-reset values. No

operations are executed on the actual MAX9258A

device. The other four buttons: Read MAX9258A &

9257A, Write MAX9258A & 9257A, Read MAX9258A,

and Write MAX9258A let the user read or write to the

MAX9258A and the MAX9257A simultaneously or indi-

vidually.

Except for the menu-driven commands that can be

generated on the Deserializer MAX9258A, Serializer

MAX9257A, and Camera Control tab sheets, the ECU

commands can be written by typing commands in the

ECU Writes N Bytes to MAX9257A/58A/Camera edit

_______________________________________________________________________________________

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

Figure 3. MAX9257A/MAX9258A Evaluation Kit Software—ECU Control Tab

On the bottom-left side of the software window, press

the Reset MAX9257A GUI button to set all the GUI val-

ues to the MAX9257A power-on-reset values. No opera-

tions are executed on the actual MAX9257A device.

The other four buttons: Read MAX9258A & 9257A,

Write MAX9258A & 9257A, Read MAX9257A, and

Write MAX9257A let the user read or write to the

MAX9258A and the MAX9257A simultaneously or indi-

vidually.

Serializer MAX9257A Tab

On the Serializer MAX9257A tab sheet ꢁFigure 5ꢂ, the

ECU can write or read all registers on the MAX9257A

by pressing the Write or Read buttons on the right of

each register. Refer to the MAX9257A/MAX9258A IC

data sheet for the definition of each register.

Four registers on each of the MAX9257A and the

MAX9258A should have the same values. They should

be configured simultaneously for the SerDes pair to

work properly. Check the Write Both 9258A&9257A

checkbox to enable the write operation of the two

devices on the same control channel.

Camera Control Tab

On the Camera Control tab sheet ꢁFigure 6ꢂ, the ECU

can communicate to the emulated camera during a

control-channel session.

_______________________________________________________________________________________

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

Figure 4. MAX9257A/MAX9258A Evaluation Kit Software—Deserializer MAX9258A Tab

By default, the MAX9258A, MAX9257A, and the emulat-

ed camera use the UART interface ꢁJU26 and JU27

shunts are set across pins 1-2ꢂ. Press the Turn On D4,

Turn Off D4, Fast Blink D4, and Slow Blink D4 but-

tons to demonstrate several simple communication

trans-actions between the ECU and the camera.

that an external pattern generator or piece of video

equipment can be connected to J6. If the Enable

PCLK_IN/HSYNC_IN/VSYNC_IN button is pressed, the

signals are enabled and the status of these three sig-

nals are displayed in the Onboard PCLK_IN,

HSYNC_IN, VSYNC_IN Status group box.

A user can change the UART speed, enable/disable

the video clocks ꢁPCLK_IN, HSYNC_IN, and

VSYNC_INꢂ, select different video clock speeds, and

switch the camera to the I²C interface. See the

Configuration Examples section for details.

By default, PCLK_IN is 30MHz, HSYNC_IN is 30kHz,

and VSYNC_IN is 60Hz. The duty cycles of all the sig-

nals are fixed at 50ꢀ.

Configuration Examples

This section describes how to configure the SerDes to

work in UART Never Come Back Operation, UART

With Finite CTO Operation, and I²C Mode. Use an

oscilloscope to monitor the activity on the MAX9258A

TX, RX, and CCEN pins.

The EV kit can generate PCLK_IN, HSYNC_IN, and

VSYNC_IN signals with the following relationships:

HSYNC_IN = PCLK_IN/1000 and VSYNC_IN =

PCLK_IN/500000. By default they are not enabled, so

_______________________________________________________________________________________

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

Figure 5. MAX9257A/MAX9258A Evaluation Kit Software—Serializer MAX9257A Tab

UART Never Come Back Operation

3ꢂ Navigate to the Deserializer MAX9258A tab sheet

This operation is used in an application when the

ECU completes the configuration of the MAX9257A/

MAX9258A right after power-up and does not want to

access the MAX9257A/MAX9258A once the video

transmission begins. The following procedure is an

example of one of many possible configurations:

ꢁFigure 4ꢂ. Press the Read MAX9258A & 9257A

button to refresh the current register values on the

GUI.

4ꢂ Keep the four Write Both 9258A&9257A checkbox-

es checked.

5ꢂ Set t

and t

on both the MAX9258A and

ETO

STO

1ꢂ Start the program or press the Reset the EVKIT

button on the ECU Control tab sheet ꢁFigure 3ꢂ.

MAX9257A to expected values. Note that the t

STO

and t

times are based on the pixel clock

ETO

2ꢂ If MAX9257A REM is set to high ꢁJU25 shunt is set

across pins 1-2ꢂ, press the ECU Wakes Up

MAX9257A button on the ECU Control tab sheet. If

MAX9257A REM is set to low ꢁJU25 shunt is set

across pins 2-3ꢂ, skip this step.

ꢁPCLK_INꢂ time. For example, if PCLK_IN is 30MHz,

set STODIV to 1024 and STOCNT to 0, t

STO

ꢁ1024 x 1/30ꢂµs ≈ 34µs. Set ETODIV to 1024 and

ETOCNT to 4, t = ꢁ1024 x 5/30ꢂµs ≈ 170µs.

ETO

6ꢂ Set other MAX9258A registers as desired.

_______________________________________________________________________________________

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

Figure 6. MAX9257A/MAX9258A Evaluation Kit Software—Camera Control Tab

7ꢂ Navigate to the Serializer MAX9257A tab sheet

ꢁFigure 5ꢂ. Select Enable in the SEREN drop-down

list within the Reg04 controls if it is not enabled.

D4, and Slow Blink D4 buttons, respectively, to ver-

ify that the ECU is communicating to the camera

properly.

8ꢂ Select Enable in the INTEN drop-down list within

the REG08 controls of the Serializer MAX9257A

tab sheet. INTEN is changed in both MAX9258A

and MAX9257A when the INTEN drop-down list is

changed on either tab sheet.

11ꢂ Press the Enable PCLK_IN/HSYNC_IN/VSYNC_IN

button to enable the pixel clock, the horizontal syn-

chronization clock, and the vertical synchronization

clock. The frequencies are displayed in the

Onboard PCLK_IN, HSYNC_IN, VSYNC_IN Status

group box.

9ꢂ From this step on, the MAX9257A and the

MAX9258A registers are no longer accessible. The

ECU can only communicate with the camera in

bypass mode because CTO is set to 0 ꢁnever come

backꢂ.

12ꢂ Use an oscilloscope to check that CCEN is toggling

and the D1 green LED is lit up ꢁMAX9258A LOCK

pin is asserted highꢂ.

13ꢂ Exercise different pixel clocks by selecting different

options in the Change PCLK_IN/HSYNC_IN/

VSYNC_IN group box. The selected pixel clock

10ꢂ Navigate to the Camera Control tab sheet ꢁFigure

6ꢂ. Press the Turn On D4, Turn Off D4, Fast Blink

_______________________________________________________________________________________

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

should be in the range of the configured PRATE

range, and the following relationship formula must

be met:

1/30ꢂµs ≈ 34µs. Set ETODIV to 1024 and ETOCNT

to 9, t

= ꢁ1024 x 10/30ꢂµs ≈ 340µs.

ETO

6ꢂ Set t

on both MAX9258A and MAX9257A to

CTO

Serial Word Length x Pixel Clock = Serial

desired values. Note that the t

time is based on

CTO

Data Rate ≤ 840Mbps

the UART bit time. For example, if the UART speed

is 400kbps, set CTO to 64, t

140 µs.

= ꢁ64 x 2.5ꢂµs =

CTO

It is preferred to select the pixel clock frequency

before the clock is enabled.

7ꢂ Set other MAX9258A registers as desired.

14ꢂ To select a different UART speed, change the cam-

era UART speed first and then go to the ECU

Control tab sheet to change the ECU UART speed

8ꢂ Navigate to the Serializer MAX9257A tab sheet

ꢁFigure 5ꢂ. Select enable in the SEREN drop-down

list within the Reg04 controls if it is not enabled.

accordingly. Ensure that t

and t

values are

STO

ETO

set correctly in order for the UART speed to work

properly. The MAX9258A REG07 FAST bit and

MAX9257A REG08 FAST bit should be configured

correctly before going to the never come back

operation.

9ꢂ Select enable in the INTEN drop-down list within the

Reg08 controls on the Serializer MAX9257A tab

sheet. INTEN is changed in both MAX9258A and

MAX9257A when the INTEN drop-down list is

changed on either tab sheet.

15ꢂ Press the Disable PCLK_IN/HSYNC_IN/VSYNC_IN

button to disable the video clock inputs to the

MAX9257A. Check that the D1 green LED is turned

off ꢁMAX9258A LOCK pin stays lowꢂ and that the

control channel is available indefinitely ꢁMAX9258A

CCEN pin stays highꢂ.

10ꢂ Press the Read button to read back the contents of

Reg08. Ensure that the INTEN drop-down list dis-

plays disabled because CTO expired by the time

the read operation executed and STO/ETO are not

counting yet since the pixel clock is not activated.

11ꢂ Navigate to the Camera Control tab sheet ꢁFigure

6ꢂ. On this tab sheet, all ECU commands to the

camera follow this order in one control-channel ses-

sion:

16ꢂ Press the Enable PCLK_IN/HSYNC_IN/VSYNC_IN

button again to enable the video clock inputs to the

MAX9257A. Check that the D1 green LED lights up

again.

aꢂ SYNC frame

UART with Finite CTO Operation

bꢂ Set MAX9258A INTEN to 1

cꢂ Wait for 15 UART bit times

dꢂ Set MAX9257A INTEN to 1

eꢂ ECU command to the camera

After every command, CTO expires first because of

If t

< t

then the MAX9257A and the MAX9258A

CTO

ETO

registers can be accessed and UART communication

with the camera in bypass mode is possible.

1ꢂ Start the program or press the Reset the EVKIT

button on the ECU Control tab sheet ꢁFigure 3ꢂ.

< t

This resets INTEN on both MAX9258A

2ꢂ If MAX9257A REM is set to high ꢁJU25 shunt is set

across pins 1-2ꢂ, then press the ECU Wakes Up

MAX9257A button on the ECU Control tab sheet. If

MAX9257A REM is set to low ꢁJU25 shunt is set

across pins 2-3ꢂ, then skip this step.

CTO

ETO.

and MAX9257A to 0 so that they become accessi-

ble again when the next control channel is avail-

able.

12ꢂ Press the Turn On D4, Turn Off D4, Fast Blink D4,

and Slow Blink D4 buttons to verify that the ECU

communicates to the camera properly.

3ꢂ Navigate to the Deserializer MAX9258A tab sheet

ꢁFigure 4ꢂ. Press the Read MAX9258A & 9257A

button to refresh the current register values on the

GUI.

13ꢂ Press the Enable PCLK_IN/HSYNC_IN/VSYNC_IN

button to enable the pixel clock, the horizontal syn-

chronization clock, and the vertical synchronization

clock. The frequencies are displayed in the

Onboard PCLK_IN, HSYNC_IN, VSYNC_IN Status

group box.

4ꢂ Keep the four Write Both 9258A&9257A checkbox-

es checked.

5ꢂ Set t

and t

on both the MAX9258A and

ETO

STO

MAX9257A to desired values. Note that the t

STO

14ꢂ Use an oscilloscope to check that CCEN is toggling

and the D1 green LED is lit ꢁMAX9258A LOCK pin is

asserted highꢂ.

and t

times are based on pixel clock ꢁPCLK_INꢂ

ETO

time. For example, if PCLK_IN is 30MHz, set

STODIV to 1024 and STOCNT to 0, t = ꢁ1024 x

STO

_______________________________________________________________________________________

MAX9257A/MAX9258A Evaluation Kit

15ꢂ Exercise different pixel clocks by selecting different

options in the Change PCLK_IN/HSYNC_IN/

VSYNC_IN group box. The selected pixel clock

should be in the range of the configured PRATE

range, and the following relationship formula must

be met:

4ꢂ Keep the four Write Both 9258A&9257A checkbox-

es checked.

5ꢂ Set t on both the MAX9257A and MAX9258A to

CTO

64.

6ꢂ Navigate to the Camera Control tab sheet ꢁFigure

6ꢂ and press the Exit UART Mode → Enter I²C

Mode button ꢁthis button is available only when

CTO is not equal to 0ꢂ.

Serial Word Length x Pixel Clock = Serial

Data Rate ≤ 840Mbps

It is preferred to select the pixel clock frequency

before the clock is enabled.

7ꢂ Follow the reminder message by moving the shunts

from JU26 and JU27 ꢁpins 1-2ꢂ to pins 2-3. Press

the OK button.

8ꢂ Now the camera and the SerDes use an I²C inter-

face. Navigate to any tab sheet and exercise the

features of the SerDes.

9ꢂ The I²C interface on the emulated camera can oper-

ate at speeds up to 4.25MHz. This is the same as

the MAX9257A and MAX9258A. Before changing

the ECU UART baud rate, the bit rates of the

MAX9257A and MAX9258A must be configured

properly.

16ꢂ To select a different UART speed, change the cam-

era UART speed first and then go to the ECU

Control tab sheet to change ECU UART speed

accordingly. Ensure that t

and t

values are

STO

ETO

set correctly in order for the UART speed to work

properly. The MAX9258A REG07 FAST bit and

MAX9257A REG08 FAST bit should be configured

correctly before choosing a different UART speed.

17ꢂ Press the Disable PCLK_IN/HSYNC_IN/VSYNC_IN

button to disable the video clock inputs to the

MAX9257A. Check that the D1 green LED is turned

off ꢁMAX9258A LOCK pin stays lowꢂ and that the

control channel is available indefinitely ꢁMAX9258A

CCEN pin stays highꢂ.

Detailed Description of Hardware

The MAX9257A/MAX9258A EV kit is a complete SerDes

pair evaluation system for the MAX9257A serializer and

MAX9258A deserializer. Check the schematic for

detailed EV kit hardware. The following is a brief

description of the EV kit design.

18ꢂ During any step above, the user can navigate to the

Deserializer MAX9258A or Serializer MAX9257A

tab sheets and perform read or write operations

because INTEN is reset to 0 after every operation.

Deserializer Side

(Right Side of the EV Kit Board)

Figure 7a shows the schematic for the MAX9258A.

Figure 7b shows the schematic for the power supplies,

a clock generator, and a microcontroller that communi-

cates with the PC. The microcontroller, together with an

FPGA, emulates an ECU.

I C Mode

If the camera uses an I²C interface, both the

MAX9257A and MAX9258A should be configured to

use the I²C interface. Because the on-board emulated

camera uses the default UART interface, the camera

must first be switched from the UART interface to an

I²C interface. Follow the steps below to evaluate the

SerDes link in base mode when the I²C interface is

enabled:

Evluates:7/MX9258A

Figure 7c shows the FPGA, which implements a high-

speed UART interface for the emulated ECU.

Serializer Side

(Left Side of the EV Kit Board)

Figure 7d shows the schematic for the MAX9257A.

Figure 7e shows the schematic for the power supplies,

a clock generator, and a microcontroller that, together

with an FPGA, emulate a camera.

1ꢂ Start the program or press the Reset the EVKIT

button on the ECU Control tab sheet ꢁFigure 3ꢂ.

2ꢂ If MAX9257A REM is set to high ꢁJU25 shunt is set

across pins 1-2ꢂ, then press the ECU Wakes Up

MAX9257A button on the ECU Control tab sheet. If

MAX9257A REM is set to low ꢁJU25 shunt is set

across pins 2-3ꢂ, then skip this step.

Figure 7f shows the FPGA, which implements a high-

speed UART and a high-speed I²C interface for the

emulated camera. The FPGA also generates PCLK_IN,

HSYNC_IN, and VSYNC_IN for the emulated camera.

3ꢂ Navigate to the Deserializer MAX9258A tab sheet

ꢁFigure 4ꢂ. Press the Read MAX9258A & 9257A

button to refresh the current register values on the

GUI.

10 ______________________________________________________________________________________

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

DI2CS Core

Description of IP Cores

(Provided by Digital Core Design)

The EV kit implements two digital cores on the FPGA

The DI2CS is an IP core that provides an interface

between a microprocessor and an I²C bus. It can work

as a slave receiver or transmitter depending on the

working mode determined by a microprocessor/micro-

controller. The DI2CS core supports all of the transmis-

sion modes required by the I²C specification ꢁstandard,

fast, and high speedꢂ. Contact Digital Core Design for

any questions relating to the DI2CS IP core. See the

Component Suppliers section for contact information or

email Digital Core Design at info@dcd.pl for more infor-

mation.

devices to generate high-speed UART signals and to

emulate a high-speed I²C slave device.

D16750 Core

(Provided by Digital Core Design)

The D16750 is an IP core of a universal asynchronous

receiver-transmitter ꢁUARTꢂ, functionally identical to the

TL16C750. Contact Digital Core Design for questions

relating to the D16750 IP core. See the Component

Suppliers section for contact information or email Digital

Core Design at info@dcd.pl for more information.

Table 1. EV Kit Jumper Settings

JUMPER

SETTING

DESCRIPTION

1-2*

MAX9258A PD pin is pulled up to V

by a 1kΩ resistor

JU1

Open

Open*

1-2*

MAX9258A PD pin is internally pulled down to ground

MAX9258A LVDS line probing connector

JU2

JU3

MAX9258A LVDS line probing connector

MAX9258A ERROR pin is pulled up to V

by a 1kΩ resistor

CCOUT

JU4

JU5

Open

1-2*

MAX9258A ERROR pin is open-drain output

MAX9258A LOCK pin is pulled up to V

CCOUT

Open

1-2*

MAX9258A LOCK pin is open-drain output

MAX9258A V

connected to on-board LDO 3.3V output

JU6

Open

1-2*

connected to an external power supply

connected to on-board LDO 3.3V output

connected to an external power supply

connected to on-board LDO 3.3V output

connected to an external power supply

CCOUT

CCPLL

CCSPLL

CCLVDS

JU7

Open

1-2*

JU8

Open

1-2*

connected to on-board LDO 3.3V output

connected to an external power supply

connected to on-board LDO 3.3V output

connected to an external power supply

JU9

Open

1-2*

JU10

JU11

JU14

Open

1-2

MAX9258A is powered by on-board LDO U5, whose V

input range is 3.5V to 12V

2-3*

MAX9258A is powered by on-board LDO U4, whose input is 5V

MAX9258A LVDS cable line-1 connected to VDD

1-2

2-3*

MAX9258A LVDS cable line-1 connected to ground

1-2*

MAX9258A RX pin is connected to the on-board emulated ECU RX line

JU15

JU16

MAX9258A RX pin is disconnected from the on-board emulated ECU RX line ꢁan external ECU RX

line can connect to J1-37ꢂ

Open

1-2*

MAX9258A TX pin is connected to the on-board emulated ECU TX line

MAX9258A TX pin is disconnected from the on-board emulated ECU TX line ꢁan external ECU TX

line can connect to J1-35ꢂ

Open

______________________________________________________________________________________ 11

MAX9257A/MAX9258A Evaluation Kit

Table 1. EV Kit Jumper Settings (continued)

JUMPER

SETTING

DESCRIPTION

1-2

MAX9257A SCL/TX pin is pulled up to V

CCIO

JU17

2-3*

1-2

MAX9257A SDA/RX pin is pulled up to V

JU18

JU19

JU20

JU21

JU22

JU23

JU24

JU25

2-3*

CCIO

1-2*

MAX9257A V

connected to on-board LDO 3.3V output

connected to an external power supply

Open

1-2*

connected to on-board LDO 3.3V output

connected to an external power supply

CCIO

Open

1-2*

CCIO

connected to on-board LDO 3.3V output

connected to an external power supply

connected to on-board LDO 3.3V output

connected to an external power supply

connected to on-board LDO 3.3V output

connected to an external power supply

CCFPLL

CCSPLL

CCLVDS

Open

1-2*

Open

1-2*

Open

1-2

MAX9257A J6 connector one side connected to V

CCIO

2-3*

MAX9257A J6 connector one side connected to ground

1-2*

MAX9257A REM pin connected to V ꢁECU needs to remotely wake up MAX9257Aꢂ

2-3

MAX9257A REM pin connected to ground

1-2*

MAX9257A SCL/TX pin is connected to the on-board emulated camera RX line

MAX9257A SCL/TX pin is connected to the on-board emulated camera SCL line

2-3

JU26

JU27

MAX9257A SCL/TX pin is disconnected from the on-board emulated camera ꢁan external camera RX

or SCL line might connect to J6-35ꢂ

Open

1-2*

2-3

MAX9257A SDA/RX pin is connected to the on-board emulated camera TX line

MAX9257A SDA/RX pin is connected to the on-board emulated camera SDA line

Evluates:7/MX9258A

MAX9257A SDA/RX pin is disconnected from the on-board emulated camera ꢁan external camera TX

or SDA line may connect to J6-37ꢂ

Open

1-2

2-3*

MAX9257A is powered by on-board LDO U13, whose V

input range is 3.5V to 12V

JU28

JU29

MAX9257A is powered by on-board LDO U12, whose input is +5V

LVDS cable line-1 connected to VDD

LVDS cable line-1 connected to ground

LVDS line probing connector

1-2

2-3*

JU30

JU31

Open*

LVDS line probing connector

*Default position.

12 ______________________________________________________________________________________

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

Figure 7a. MAX9257A/MAX9258A EV Kit Schematic ꢁSheet 1 of 6ꢂ

______________________________________________________________________________________ 13

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

Figure 7b. MAX9257A/MAX9258A EV Kit Schematic ꢁSheet 2 of 6ꢂ

14 ______________________________________________________________________________________

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

Figure 7c. MAX9257A/MAX9258A EV Kit Schematic ꢁSheet 3 of 6ꢂ

______________________________________________________________________________________ 15

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

Figure 7d. MAX9257A/MAX9258A EV Kit Schematic ꢁSheet 4 of 6ꢂ

16 ______________________________________________________________________________________

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

Figure 7e. MAX9257A/MAX9258A EV Kit Schematic ꢁSheet 5 of 6ꢂ

______________________________________________________________________________________ 17

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

Figure 7f. MAX9257A/MAX9258A EV Kit Schematic ꢁSheet 6 of 6ꢂ

18 ______________________________________________________________________________________

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

Figure 8. MAX9257A/MAX9258A EV Kit Component Placement Guide—Component Side

______________________________________________________________________________________ 19

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

Figure 9. MAX9257A/MAX9258A EV Kit PCB Layout—Component Side

20 ______________________________________________________________________________________

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

Figure 10. MAX9257A/MAX9258A EV Kit PCB Layout—Inner Layer 2

______________________________________________________________________________________ 21

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

Figure 11. MAX9257A/MAX9258A EV Kit PCB Layout—Inner Layer 3

22 ______________________________________________________________________________________

MAX9257A/MAX9258A Evaluation Kit

Evluates:7/MX9258A

Figure 12. MAX9257A/MAX9258A EV Kit PCB Layout—Solder Side

______________________________________________________________________________________ 23

MAX9257A/MAX9258A Evaluation Kit

Revision History

REVISION REVISION

DESCRIPTION

PAGES

CHANGED

NUMBER

DATE

9/11

Initial Release

—

Evluates:7/MX9258A

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

24 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

Maxim is a registered trademark of Maxim Integrated Products, Inc.

MAX9257AEVKIT [MAXIM]

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