MAX9268EVKIT [MAXIM]
Windows XP-, Windows Vista-, and Windows 7-Compatible Software;
| 型号： | MAX9268EVKIT |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Windows XP-, Windows Vista-, and Windows 7-Compatible Software |
| 文件： | 总26页 (文件大小：2770K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-5263; Rev 0; 5/10
MAX9268 Evaluation Kit
General Description
Features
S Drives LVDS Video and I2S Audio
S On-Board I2S Audio DAC (MAX9850)
The MAX9268 evaluation kit (EV kit) provides a proven
design to evaluate the MAX9268 gigabit multimedia
serial link (GMSL) with spread spectrum and full-duplex
S On-Board Class D Audio Power Amplifier
®
control channel. The EV kit also includes Windows XP -,
(MAX9701)
®-
®
Windows Vista , and Windows 7-compatible software
that provides a simple graphical user interface (GUI) for
exercising the features of the MAX9268.
S Windows XP-, Windows Vista-, and Windows
7-Compatible Software
S USB-PC Connection (Cable Included)
S USB Powered
The MAX9268 EV kit comes with a MAX9268GCM/V+
installed.
For complete GMSL evaluation, order both the MAX9268
EV kit and its companion board, the MAX9249 EV kit or
the MAX9259 EV kit.
S Proven PCB Layout
S Fully Assembled and Tested
Ordering Information
PART
TYPE
MAX9268EVKIT+
EV Kit
+Denotes lead(Pb)-free and RoHS compliant.
Note: The MAX9268 EV kit should be ordered with its com-
panion board, the MAX9249 EV kit or the MAX9259 EV kit.
Component List
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
0.01FF Q10%, 25V X7R ceramic
capacitors (0402)
Murata GRM155R71E103K
22pF Q5%, 50V C0G ceramic
capacitors (0603)
TDK C1608C0G1H220J
C106, C107,
4
C1–C7
7
C122, C123
1FF Q10%, 16V X5R ceramic
capacitor (0603)
TDK C1608X5R1C105K
C8–C14,
C101–C105,
C121, C131,
C141, C151,
C257, C258,
C259,
C108
1
0.1FF Q10%, 16V X7R ceramic
capacitors (0603)
Murata GRM188R71C104K
23
0.033FF Q10%, 25V X7R
ceramic capacitor (0603)
Murata GRM188R71E333K
C110
C111
1
0
C291–C294
Not installed, capacitor (0603)
C200,
C203–C209,
C216, C217
1FF Q10%, 6.3V X5R ceramic
capacitors (0402)
Murata GRM155R60J105K
0.22FF Q10%, 50V X7R ceramic
capacitors (0805)
Murata GRM21BR71H224K
10
C19, C20
C21
2
1
2.2FF Q20%, 6.3V X5R ceramic
capacitor (0603)
TDK C1608X5R0J225M
4.7FF Q20%, 25V X7R ceramic
capacitor (1206)
Murata GCM31CR71E475M
C201
C202
1
1
0.47FF Q20%, 16V X7R ceramic
capacitor (0603)
TDK C1608X7R1C474M
10FF Q20%, 16V X5R ceramic
capacitors (1206)
Murata GRM31CR61C106M
C22, C24, C25,
C26, C109
5
0
C23
Not installed, capacitor (1206)
Windows is a registered trademark of Microsoft Corp.
_______________________________________________________________ Maxim Integrated Products
1
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.
MAX9268 Evaluation Kit
Component List (continued)
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
220FF Q20%, 6.3V low-ESR
tantalum capacitors (C case)
AVX TPSC227M006R0070
JU101–JU108,
JU141–JU144,
JU255, JU256,
JU294
C210, C211
C212, C213
C214, C215
2
0
2
Not installed, 2-pin headers—
shorted with PCB trace
0
Not installed, capacitors
(C case)
JU201
JU251
1
1
6-pin header (2 x 3)
5-pin header
10FF Q20%, 6.3V X5R ceramic
capacitors (0805)
TDK C2012X5R0J106M
L21, L22, L23,
L101
Ferrite beads (0603)
TDK MMZ1608R301A
4
5
100ω, 3A ferrite beads (0603)
TDK MPZ1608S101A
100pF Q5%, 50V C0G ceramic
capacitor (0603)
L251–L255
C250
1
TDK C1608C0G1H101J
LED1, LED3,
LED4, LED120,
LED151–
1FF Q10%, 6.3V X5R ceramic
capacitors (0603)
12
Red LEDs (0805)
Green LED (0805)
C251–C254
C255
4
0
1
LED158
TDK C1608X5R0J105K
Not installed, capacitor (0805)
LED2
1
5
n-channel MOSFETs (SOT23
Central Semi 2N7002
10FF Q10%, 6.3V X5R ceramic
capacitor (0805)
Q1–Q5
C256
Murata GRM21BR60J106K
R1, R2
R3–R8
2
6
49.9kω Q1% resistors (0603)
2.2kω Q5% resistors (0603)
H1
1
1
10-pin header (2 x 5)
8-pin header
H20
R11–R15,
R123,
R151–R158,
R201, R202
High-speed automotive
connector
Rosenberger D4S20F-40MA5-Z
16
1kω Q5% resistors (0603)
J1
1
R101, R102
R103
2
1
1
0
1
1
2
1
27ω Q5% resistors (0603)
1.5kω Q5% resistor (0603)
470ω Q5% resistor (0603)
Not installed, resistors (0603)
1.1kω Q5% resistor (0603)
10kω Q5% resistor (0603)
4.7kω Q5% resistors (0603)
49.9ω Q1% resistor (0603)
USB type-B, right-angle female
receptacle
J10
1
J201–J204
J206
4
1
Phono jacks
R104
3.5mm stereo headphone jack
R111, R112
R121
JU1–JU6, JU9,
JU11, JU121,
JU151, JU152,
JU252, JU253,
JU254, JU206,
JU290–JU293,
SW1
R122
R191, R192
R251
20
2
3-pin headers
4-pin headers
Not installed, 100W Q5%
resistors (0402)
RT100–RT104
0
9
JU7, JU8
SW122,
SW150–SW157
Momentary pushbutton switches
(6mm)
JU10, JU21,
JU22, JU23,
JU153, JU154,
JU191–JU194,
JU202–JU205,
JUCNTL0,
Gigabit multimedia serial link,
LVDS outputs (48 TQFP-EP*)
Maxim MAX9268GCM/V+
U1
U2
1
1
17
2-pin headers
3.3V, 500mA LDO regulator
(8 FMAXM-EP*)
Maxim MAX1792EUA33+
(Top Mark: AAAC)
JUCNTL1,
JUCNTL2
2
______________________________________________________________________________________
MAX9268 Evaluation Kit
Component List (continued)
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
UART-to-USB converter
(32 TQFP)
1.3W filterless, stereo Class D
audio power amplifier
(24 TQFN-EP*)
U10
1
U25
1
Not installed, 93C46-type 3-wire
EEPROM 16-bit architecture
(8 SO)
Maxim MAX9701ETG+
U11
0
Not installed, multiple-output
clock generator with dual PLLs
and OTP (20 TQFN-EP*)
Ultra-high-speed microcontroller
(44 TQFP)
Maxim DS89C450-ENL+
U29
Y10
0
1
1
U12
U13
U14
U15
Maxim MAX9471ETP4X+
Three-state quad buffer (14 SO)
Fairchild 74AC125SC
6MHz crystal (HCM49)
Hong Kong X’tals
SSL60000N1HK188F0-0
1
1
1
Level translator (14 TSSOP)
Maxim MAX3378EEUD+
14.7456MHz crystal (HCM49)
Hong Kong X’tals
SSM14745N1HK188F0-0
I2C I/O expander (24 QSOP)
Maxim MAX7324AEG+
Y12
—
1
1
USB high-speed A-to-B cable,
6ft
Dual bidirectional level translator
(8 SOT23)
Maxim MAX3373EEKA+
(Top Mark: AAKS)
U19
U20
1
1
Cable assembly (2m)
MD Electronik PT1482
—
1
37
1
—
Shunts
Stereo audio DAC with
DirectDriveM headphone
amplifier (28 TQFN-EP*)
Maxim MAX9850ETI+
PCB: MAX9268 EVALUATION
KIT+
—
*EP = Exposed pad.
Component Suppliers
SUPPLIER
PHONE
843-946-0238
631-435-1110
888-522-5372
852-35112388
011-49-86-38-604-0
770-436-1300
011-49-86 84-18-0
847-803-6100
WEBSITE
AVX Corporation
www.avxcorp.com
Central Semiconductor Corp.
Fairchild Semiconductor
www.centralsemi.com
www.fairchildsemi.com
www.hongkongcrystal.com
www.md-elektronik-gmbh.de
www.murata-northamerica.com
www.rosenberger.de
Hong Kong X’tals Ltd.
MD Elektronik GmbH
Murata Electronics North America, Inc.
Rosenberger Hochfrequenztechnik GmbH
TDK Corp.
www.component.tdk.com
Note: Indicate that you are using the MAX9268 when contacting these component suppliers.
µMAX and DirectDrive are registered trademarks of Maxim
Integrated Products, Inc.
_______________________________________________________________________________________
3
MAX9268 Evaluation Kit
MAX9268 EV Kit Files
FILE
DESCRIPTION
INSTALL.EXE
MAX9268.EXE
Installs the EV kit files on your computer
Application program
CDM20600.EXE
Installs the USB device driver
Uninstalls the EV kit software
USB driver installation help file
UNINSTALL.EXE
USB_Driver_Help_200.PDF
3) Verify that all jumpers are in their default positions,
Quick Start
Required Equipment
as shown in Table 1.
4) Connect the Rosenberger cable from MAX9249 EV
kit connector J1 to MAX9268 EV kit connector J1.
•ꢀ MAX9268 EV kit (USB cable included)
•ꢀ MAX9249 EV kit (USB cable included)
5) Connect the LVDS data source to header H1 of the
MAX9249 EV kit.
•ꢀ 2m Rosenberger cable assembly (included in the
MAX9268 EV kit)
6) Optional Audio Demo: Connect the S/PDIF audio
source (e.g., DVD player digital output) to MAX9249
EV kit phono jack J21. Or, connect I2S audio source
to header H1 and remove jumper JU210. Connect
speakers to MAX9268 EV kit SPKR_L+/SPKR_L- and
SPKR_R+/SPKR_R- oval pads, or plug headphones
into J206 headphone jack.
•ꢀ Data source (such as digital video)
•ꢀ Optional: I2S or S/PDIF audio source
•ꢀ Optional: Pair of 8I speakers
•ꢀ Optional: 3.5mm stereo headphones
(16I or greater)
•ꢀ User-supplied PC with a spare USB port (direct
7) Connect the USB cable from the PC to the EV kit
board. A Windows message appears when connect-
ing the EV kit board to the PC for the first time. Each
version of Windows has a slightly different message.
If you see a Windows message stating ready to
use then proceed to the next step. Otherwise, open
the USB_Driver_Help_200.PDF document in the
Windows Start | Programs menu to verify the USB
driver was installed successfully.
500mA connection required; do not use a hub)
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
underlined refers to items from the Windows operating
system.
Procedure
The MAX9268 EV kit is fully assembled and tested.
Follow the steps below to verify board operation:
8) Verify that MAX9249 EV kit LED120 lights up,
indicating that the microcontroller is powered and
enabled.
1) Visit www.maxim-ic.com/evkitsoftware to download
the latest version of the EV kit software, 9268Rxx.
ZIP. Save the EV kit software to a temporary folder
and uncompress the ZIP file.
9) Verify that MAX9268 EV kit LED120 lights up,
indicating that the microcontroller is powered and
enabled.
2) Install the EV kit software and USB driver on your
computer by running the INSTALL.EXE program
inside the temporary folder. The program files are
copied to your PC and icons are created in the
Windows Start | Programs menu. During software
installation, some versions of Windows may show
a warning message indicating that this software
is from an unknown publisher. This is not an error
condition and it is safe to proceed with installation.
Administrator privileges are required to install the
USB device driver on Windows.
10) Verify that MAX9268 EV kit LED2 lights up, indicat-
ing that the link has been successfully established.
If LED2 is off or LED1 is on, double-check that
PCLK_IN signal is clocking data.
11) Optional Audio Demo: Press and release switch
SW122 on both of the MAX9249 and MAX9268 EV
kits to enable the S/PDIF-to-I2S and I2S-to-audio
DAC demonstration circuitry. If I2S or S/PDIF audio
was provided to the MAX9249 EV kit, audio should
now be heard from the speakers or headphones
previously connected to the MAX9268 EV kit.
4
______________________________________________________________________________________
MAX9268 Evaluation Kit
12) Start the MAX9249 EV kit software by opening its
icon in the Windows Start | Programs menu. The
EV kit software configuration window appears, as
shown in Figure 7.
Detailed Description of Software
The main window of the evaluation software (Figure 1)
shows a block diagram representing the MAX9249/
MAX9268 system. The left column shows MAX9249 input
data sources, and the right column shows MAX9268
output data sinks.
13) Press the Connect button and the configuration
window disappears.
14) The EV kit software main window appears, as shown
in Figure 1.
The Change Configuration button (Figure 1) brings
up the Configuration window (Figure 7), allowing the
software GUI to select into which side of the link the
USB cable should be plugged. Controlling from the
MAX9268 side requires changing some jumper set-
tings as described in this window. If the MAX9249
and MAX9268 device addresses have been previously
changed from their factory power-on-reset values, the
new addresses must be specified in the Configuration
window to allow register access.
15) Press the Read All button to read all registers on the
MAX9249 and MAX9268.
2
16) I C Slave Device Demo: Make sure MAX9268 EV kit
headers JU151–JU154 are in the 1-2 position.
17) In the software’s MAX7324 tab (Figure 4), press
the Search for MAX7324 button. Verify that the
MAX7324 Device Address drop-down list shows
0xDA (JU151=1-2 JU152=1-2).
The Baud Rate drop-down list sets the communications
baud rate. The USB link uses the same baud rate as the
MAX9249/MAX9268. Note that the baud rate should only
be changed one step at a time.
18) Press the LED151-LED158 ON button. Verify that
MAX9268 EV kit LED151–LED158 turn on.
19) Press the LEDs Alternating button. Verify that
MAX9268 EV kit LED151, LED153, LED156, and
LED158 turn off.
The Read All button reads all the MAX9249 and
MAX9268 device registers. Reset to Default Values
restores recommended factory settings, and Write All
writes all MAX9249/MAX9268 device registers with the
values shown in the GUI.
20) GPIO Demo: In the software’s MAX9268 tab
(Figure 3), scroll down to Register 0x06. Uncheck
the GPIO1OUT checkbox and press the Write but-
ton. Verify that MAX9268 EV kit LED4 turns off.
The MAX9249 tab sheet (Figure 2) provides direct access
to all registers of the MAX9249, and the MAX9268 tab
sheet (Figure 3) provides direct access to all registers of
the MAX9268. Each register has its own Read and Write
button. The small circle next to the Read button turns yel-
low to indicate an attempt to read or write, red to indicate
a failed read or write, and green to indicate a successful
read or write operation.
The MAX7324 tab sheet (Figure 4) controls the I2C I/O
expander on the remote side of the link. When the USB
is plugged into the MAX9249 EV kit, the MAX7324 tab
sheet controls the MAX7324 (U15) on the MAX9268
EV kit. Note that the MAX7324 actually has two device
addresses; for simplicity, the software GUI only displays
the device address associated with MAX7324 outputs.
For details, refer to the MAX7324 IC data sheet.
21) Uncheck the GPIO0OUT checkbox and press the
Write button. Verify that MAX9268 EV kit LED3 turns
off.
22) Check the GPIO1OUT checkbox and press the Write
button. Verify that MAX9268 EV kit LED4 turns on.
23) Check the GPIO0OUT checkbox and press the Write
button. Verify that MAX9268 EV kit LED3 turns on.
24) INT Demo: Toggle MAX9268 EV kit switch SW2 up.
Verify that MAX9249 EV kit LED1 turns on, indicating
that MAX9268 INT input is asserted.
25) In the software’s MAX9268 tab, scroll to
Register 0x06 and press the Read button. Verify
that the INT checkbox is checked, indicating that
MAX9268 INT input is asserted.
The PRBS Test tab sheet (Figure 5) uses the MAX9268
registers to perform a pseudorandom bit sequence
(PRBS) error-rate test. Select the test duration (maxi-
mum 32,767sec = 9.1hrs) and press the Start button.
The software GUI configures the MAX9268 to begin the
PRBS test, counts down the specified delay time, and
then reports the final value of the MAX9268 PRBSERR
register.
26) Toggle MAX9268 EV kit switch SW2 down. Verify
that MAX9249 EV kit LED1 turns off, indicating that
MAX9268 INT input is not asserted.
27) In the software’s MAX9268 tab, scroll to
Register 0x06 and press the Read button. Verify
that the INT checkbox is not checked, indicating
that MAX9268 INT input is not asserted.
_______________________________________________________________________________________
5
MAX9268 Evaluation Kit
The Interface History and Low Level Access tab
sheet (Figure 6) shows the recent low-level commu-
nications activity between the software GUI and the
MAX9249/MAX9268. The Register Access group box
provides arbitrary device read/write control, support-
ing additional user-supplied devices besides the on-
board MAX9249, MAX9268, and MAX7324. The Device
Address, Register, and Data drop-down lists specify
the device address and the register within the device, as
well as one optional byte of data to be written. Pressing
the Write Register button writes one byte of data to
the specified device register. Read Register reads the
specified device register and reports the results into the
Interface History window. Devices that are not register-
based (such as the MAX7324) are supported by Send
Data (no register) and Receive Data (no register).
User-supplied devices requiring other interface proto-
cols must use Raw TX byte codes to communicate.
Note that in bypass mode, raw data is passed to the
user-supplied slave device directly without modification.
User-Supplied Interface
To use the MAX9268 EV kit with a user-supplied inter-
face, first cut the PCB traces at jumpers JU141 and
JU142. Next, apply your own TX/SCL signal at the U1
side of JU141 and RX/SDA at the U1 side of JU142. Refer
to the MAX9249, MAX9259/MAX9260, and MAX9268 IC
data sheets for details about UART protocol for base
mode, write data format, read data format, selecting
base mode or bypass mode, and selecting UART or I2C
slave device.
User-Supplied Power Supply
The MAX9249 and MAX9268 EV kits are powered com-
pletely from the USB port by default. The 5V USB bus
power is supplied to the remote EV kit over the link cable
by default. Jumper JU10 powers the link cable (VBUS)
from the 5V USB supply, and jumper JU9 connects the
link cable VBUS to the VIN power supply.
To provide external power to each EV kit’s VIN, and still
power both microcontrollers from USB, remove the shunt
from JU9, but leave the shunt at JU10 installed. The link
cable carries the USB 5V bus power to the remote EV
kit board, but external user-supplied VIN supplies are
required to power the MAX9249 and the MAX9268.
Detailed Description of Hardware
The MAX9268 EV kit provides a proven layout for the
MAX9268. On-board level translators, I2S stereo audio
DAC, Class D audio power amplifier, and easy-to-use
USB-PC connection are included on the EV kit.
To provide different power supplies to DVDD, AVDD, and
IOVDD, remove the shunts from jumpers JU21, JU22,
and JU23, and apply external user-supplied power at the
DVDD, AVDD, and IOVDD oval pads.
The MAX9268 EV kit board layout is divided into four
principal sections.
2
The I S audio link demonstration requires both MAX9249
From header H1 to connector J1 are the support compo-
nents specific to the MAX9268. On-board LDO regulator
U2 powers the AVDD, DVDD, and IOVDD supplies from
VIN. Jumper JU9 optionally connects VIN to the link
cable, powering the remote EV kit board.
EV kit and MAX9268 EV kit microcontrollers (U12) to be
powered; otherwise, the on-board S/PDIF-to-I2S con-
verter or the I2S audio DAC does not initialize.
Detailed Description of Firmware
Below header H1, the board layout has three sections:
microcontroller (U10–U14), I2C slave device (U15), and
audio (U20–U25). The microcontroller and I2C slave
device sections are identical to the MAX9249 and
MAX9268 EV kits.
The DS89C450 microcontroller (U12) runs custom firm-
ware, which ensures that no breaks occur within reg-
ister read/write commands. The firmware records 9-bit
even-parity data received from the USB interface while
RTS is set, and plays back the 9-bit data with 1.5 stop
bits timing when RTS is cleared. Data received from the
MAX9268 is relayed to USB immediately.
The audio chips are initialized by an I2C command
sequence sent by the firmware when the microcon-
troller is reset. The same firmware runs on both the
MAX9249 and MAX9268 EV kit boards, so this initializa-
tion sequence covers both the S/PDIF-to-I2S converter
and the MAX9850 I2S stereo audio DAC. Pressing switch
SW122 resets the microcontroller, resending the audio
I2C initialization commands.
The audio section of the MAX9249 and MAX9259 EV
2
kits contain S/PDIF-to-I S audio converter circuits (U20–
U25), which an be disabled by JU210 for applications
already having I2S audio.
The audio section of the MAX9268 EV kit contains an I2S-
to-audio DAC circuit (U20) and a Class D stereo power
amplifier (U25). The audio DAC circuits are similar to the
MAX9850 EV kit, and the power amplifier circuit is similar
to the MAX9701 EV kit.
6
______________________________________________________________________________________
MAX9268 Evaluation Kit
The firmware also supports a small set of commands,
available when RTS is clear. Since all register read/
write requests are sent with RTS set, there is no conflict
between register data and firmware commands. These
firmware commands are issued automatically by the
MAX9249 EV kit software GUI. The following information
is provided for reference only.
software GUI automatically sends the baud-rate change
command.
Firmware command “T” supports waking up the MAX9249
from the MAX9268 side of the link. Command “T” per-
forms a dummy read, followed by a delay on the order
of 1ms to 8ms, and finally writes a register value. For
example, send “T810558800483” to read from device
address 0x81 register 0x05, delay 4ms, then write to
device address 0x80 register 0x04 data 0x83. This is
the MAX9249 wake-up sequence for the default device
addresses. The software GUI automatically sends this
command when the Wake Up MAX9249 button is
pressed.
Firmware command “?” prints the firmware version ban-
ner message and brief command list.
Firmware command “B” changes the baud rate by
changing the internal TH1 baud-rate divisor. Refer to
firmware help command “?” for details. Pressing switch
SW122 resets the USB baud rate to 921,600 baud. The
Table 1. MAX9268 EV Kit Jumper Descriptions
JUMPER
SIGNAL
SHUNT POSITION
DESCRIPTION
CDS = high; ECU attached to MAX9268; connects the USB to the
MAX9268 EV kit
1-2
JU1
CDS
2-3*
CDS = low; optional peripheral attached to the MAX9268
Reserved
Open
1-2
MS = high; full-duplex bypass mode; device registers not
accessible
(toggle switch up)
SW1
MS
2-3*
MS = low; half-duplex base mode; required when writing to device
registers or when using external I2C peripheral
(toggle switch down)
1-2*
2-3
BWS = high
BWS = low
EQS = high
EQS = low
DRS = high
DRS = low
SSEN = high
SSEN = low
JU2
JU3
JU4
JU5
JU6
BWS
EQS
1-2*
2-3
1-2*
2-3
DRS
1-2*
2-3
SSEN
PWDN
1-2*
2-3
PWDN = high
PWDN = low
1-2
ADD1 = IOVDD (see Table 2)
ADD1 = Open (see Table 2)
ADD1 = GND (see Table 2)
ADD0 = IOVDD (see Table 2)
ADD0 = Open (see Table 2)
ADD0 = GND (see Table 2)
J1 pin 4 connects to VIN
J1 pin 4 connects to GND
J1 pin 4 unconnected
JU7
JU8
ADD1
ADD0
1-3
1-4*
1-2
1-3
1-4*
1-2*
2-3
JU9
Bus power
Bus power
Open
1-2*
Open
J1 pin 1 connects to USB+5V
USB power is not connected to link cable power
JU10
_______________________________________________________________________________________
7
MAX9268 Evaluation Kit
Table 1. MAX9268 EV Kit Jumper Descriptions (continued)
JUMPER
SIGNAL
SHUNT POSITION
1-2
DESCRIPTION
INT = high
INT = low
JU11
INT
2-3
1-2*
AVDD power from 3.3V LDO U2, powered by VIN
AVDD must be provided from an external source
DVDD power from 3.3V LDO U2, powered by VIN
DVDD must be provided from an external source
IOVDD power from 3.3V LDO U2, powered by VIN
IOVDD must be provided from an external source
Reserved for factory diagnostic tests
JU21
JU22
JU23
AVDD
DVDD
IOVDD
Open
1-2*
Open
1-2*
Open
JU121
JU141
JU142
JU143
JU144
Reserved
TX/SCL
RX/SDA
LFLT
Not installed*
Not installed*
Not installed*
Not installed*
Not installed*
1-2*
Connects U1–U12 through level translator U14
Connects U1–U12 through level translator U14
Connects U1 to the USB through level translator U14
Connects U1 to the USB through level translator U14
Selects U15 I2C device address
INT
JU151
JU152
JU153
JU154
U15 AD2
U15 AD0
U15 SDA
U15 SCL
2-3
Selects U15 I2C device address
Open
Reserved for factory diagnostic tests
Selects U15 I2C device address
Selects U15 I2C device address
1-2*
2-3
Open
Reserved for factory diagnostic tests
Connects U15 MAX7324 to the I2C bus; MS must be low (SW1) and
CDS must be low (JU1 = 2-3 on both boards)
Disconnects U15 MAX7324 from the I2C bus; MS can be high (SW1)
Connects U15 MAX7324 to the I2C bus; MS must be low (SW1) and
CDS must be low (JU1 = 2-3 on both boards)
1-2*
Open
1-2*
Open
1-2*
Disconnects U15 MAX7324 from the I2C bus; MS can be high (SW1)
U12 sends I2C initialization commands to audio chip U20
Disconnects the audio I2C bus pullup resistor
U12 sends the I2C initialization commands to audio chip U20
Disconnects the audio I2C bus
U12 sends the I2C initialization commands to audio chip U20
Disconnects the audio I2C bus pullup resistor
U12 sends the I2C initialization commands to audio chip U20
Disconnects the audio I2C bus
JU191
JU192
JU193
JU194
AUDIO_SCL
AUDIO_SCL
AUDIO_SDA
AUDIO_SDA
Open
1-2*
Open
1-2*
Open
1-2*
Open
U20 ADD = GND
1-2*
3-4
Selects U20 device address 0010 000x (0x20) (on audio I2C bus)
U20 ADD = IOVDD
Selects U20 device address 0010 001x (0x22) (on audio I2C bus)
JU201
JU202
U20 ADD
U20 ADD = AUDIO_SDA
5-6
Selects U20 device address 0010 011x (0x26) (on audio I2C bus)
Open
1-2*
Reserved
U20 MAX9850 headphone sense controlled by the insertion of
headphones
HPS
Open
U20 MAX9850 headphone sense switch forced open
8
______________________________________________________________________________________
MAX9268 Evaluation Kit
Table 1. MAX9268 EV Kit Jumper Descriptions (continued)
JUMPER
SIGNAL
SHUNT POSITION
DESCRIPTION
U1 I2S audio drives U20 MAX9850 audio DAC
Disconnects the I2S signals
U1 I2S audio drives U20 MAX9850 audio DAC
Disconnects the I2S signals
U1 I2S audio drives U20 MAX9850 audio DAC
Disconnects the I2S signals
1-2*
Open
1-2*
JU203
I2S SD
JU204
JU205
JU206
I2S SCK
I2S WS
MCLK
Open
1-2*
Open
1-2*
U20 MCLK = PLL_OUT_MCLK from 4x PLL U29
U20 MCLK = CNTL2/MCLK from U1
2-3
U25 operates in spread-spectrum mode with f
Q60kHz
= 1200kHz
OSC
1-2*
1-3
1-4
U25 operates in fixed-frequency mode with f
= 1400kHz
= external
OSC
JU251
U25 SYNC
U25 operates in fixed-frequency mode with f
TTL-compatible clock frequency
OSC
1-5
Open
1-2*
U25 operates in fixed-frequency mode with f
Reserved
= 1100kHz
OSC
U25 SHDN = high, enables speaker driver
U25 SHDN = low, disables speaker driver
Reserved
JU252
JU253
2-3
U25 SHDN
U25 GAIN2
U25 GAIN1
Open
1-2*
JU253 and JU254 set the gain of U25
JU253 and JU254 set the gain of U25
Reserved
2-3
Open
1-2*
JU253 and JU254 set the gain of U25
JU253 and JU254 set the gain of U25
Reserved
JU254
JU255
2-3
Open
Not installed*
Open
Not installed*
Open
U25 input INL is ground referenced
Reserved
U25 INL-
U25 INR-
U25 input INR is ground referenced
Reserved
JU256
*Default position.
Table 2. Address-Select Jumpers (JU7, JU8)
JU7 SHUNT POSITION
ADD1
JU8 SHUNT POSITION
ADD0
IOVDD
Open
GND
MAX9268 ADDRESS
1-2
1-3
1-4
1-2
1-3
1-4
1-2
1-3
1-4*
0xD4
0xD8
0xD0
0x54
0x58
0x50
0x94
0x98
0x90
1-2
IOVDD
IOVDD
Open
GND
1-3
Open
GND
IOVDD
Open
GND
1-4*
*Device address is determined when power is applied.
_______________________________________________________________________________________
9
MAX9268 Evaluation Kit
Figure 1. MAX9249/MAX9268 EV Kit Software Main Window (Block Diagram Tab)
10 _____________________________________________________________________________________
MAX9268 Evaluation Kit
Figure 2. MAX9249/MAX9268 EV Kit Software Main Window (MAX9249 Tab)
______________________________________________________________________________________ 11
MAX9268 Evaluation Kit
Figure 3. MAX9249/MAX9268 EV Kit Software Main Window (MAX9268 Tab)
12 _____________________________________________________________________________________
MAX9268 Evaluation Kit
Figure 4. MAX9249/MAX9268 EV Kit Software Main Window (MAX7324 Tab)
______________________________________________________________________________________ 13
MAX9268 Evaluation Kit
Figure 5. MAX9249/MAX9268 EV Kit Software Main Window (PRBS Test Tab)
14 _____________________________________________________________________________________
MAX9268 Evaluation Kit
Figure 6. MAX9249/MAX9268 EV Kit Software Main Window (Interface History and Low Level Access Tab)
______________________________________________________________________________________ 15
MAX9268 Evaluation Kit
Figure 7. MAX9249/MAX9268 EV Kit Software Configuration Window
16 _____________________________________________________________________________________
MAX9268 Evaluation Kit
Figure 8a. MAX9268 EV Kit Schematic (Sheet 1 of 3)
______________________________________________________________________________________ 17
MAX9268 Evaluation Kit
Figure 8b. MAX9268 EV Kit Schematic (Sheet 2 of 3)
18 _____________________________________________________________________________________
MAX9268 Evaluation Kit
Figure 8c. MAX9268 EV Kit Schematic (Sheet 3 of 3)
______________________________________________________________________________________ 19
MAX9268 Evaluation Kit
1.0”
Figure 9. MAX9268 EV Kit Component Placement Guide—Component Side
20 _____________________________________________________________________________________
MAX9268 Evaluation Kit
1.0”
Figure 10. MAX9268 EV Kit PCB Layout—Component Side
______________________________________________________________________________________ 21
MAX9268 Evaluation Kit
1.0”
Figure 11. MAX9268 EV Kit PCB Layout—Ground Layer 2
22 _____________________________________________________________________________________
MAX9268 Evaluation Kit
1.0”
Figure 12. MAX9268 EV Kit PCB Layout—Power Layer 3
______________________________________________________________________________________ 23
MAX9268 Evaluation Kit
1.0”
Figure 13. MAX9268 EV Kit PCB Layout—Solder Side
24 _____________________________________________________________________________________
MAX9268 Evaluation Kit
1.0”
Figure 14. MAX9268 EV Kit Component Placement Guide—Solder Side
______________________________________________________________________________________ 25
MAX9268 Evaluation Kit
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
DESCRIPTION
0
5/10
Initial release
—
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.
26
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2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
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