UR5HCGNK-UP60-FB_技术文档

KeyCoder™ USB UR5HCGNK-UP60

Bootable USB Keyboard Controller

With External PS/2

TM

HID & SYSTEM MANAGEMENT PRODUCTS, KEYCODER FAMILY

DESCRIPTION

FEATURES

The KeyCoder™ USB UR5HCGNK-

UP60 is a single-chip, bootable

USB keyboard encoder with a

built-in PS/2 port available for an

external PS/2 mouse or keyboard.

The KeyCoder™ USB achieves in

one easy-to-implement IC what

would otherwise require

• PS/2 port supports hot plug of

PS/2 legacy devices

• Provides direct drive for three

LEDs (caps lock, numeric lock,

scroll lock)

• Inexpensive, single-chip solution

• Supports boot mode of the USB

1.1 specification

• Single USB endpoint, compatible

with the USB 1.1 specification

• Scans and encodes an 8 x 18

keyboard matrix

• PS/2 port supports MouseWheel

functionality

• External PS/2 interface to USB

cumbersome and expensive chip-

sets.

APPLICATIONS

The KeyCoder™ USB offers a hot-

pluggable PS/2 port that can

accept an external keyboard or

pointing device. The user can

easily connect legacy PS/2

• System legacy support

• Industrial or custom keyboards

• Desktop computers

• Point-of-sale (POS) terminals

• Portable devices

• Hand-held PCs (H/PCs) and

Pro H/PCs

keyboards or pointing devices to

the current USB host system with

no performance penalty. The

KeyCoder™ USB auto-switches

between an external keyboard or

pointing device and transparently

enables Mousewheel functionality

in pointing devices that support it.

PIN ASSIGNMENTS

1

CAPSLED

NUMLED

ROW0

ROW1

ROW2

ROW3

ROW4

ROW5

ROW6

ROW7

VDD

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

SCRLLED

COL17

D+

2

3

4

D-

5

3.3V

6

N/C

The KeyCoder™ USB manages the

bi-directional translation from the

PS/2 device to the system’s USB

support. Both internal keyboard

and external PS/2 device reports

are streamed and appear to the

system as if coming from a single

source.

33

32

31

30

29

28

27

26

25

24

23

7

ROW4

ROW5

ROW6

ROW7

VDD

VSS1

XOUT

XIN

N/C

1

2

3

4

5

6

7

8

COL00

COL01

COL02

COL03

COL04

COL05

COL06

COL07

COL08

COL09

COL10

COL11

COL12

COL13

COL14

8

9

COL00

COL01

COL02

COL03

COL04

COL05

COL06

COL07

10

11

12

13

14

15

16

17

18

19

20

21

UR5HCGNK-UP60-FB

QFP

VSS

PS2CLK

PS2DAT

9

10

11

XOUT

XIN

VSS1

PS2CLK

PS2DAT

_RESET

PS2EN

COL16

COL15

Customized versions of the

KeyCoder™ USB are also available

independently of production

volumes, in order to facilitate the

quick adoption of USB in platforms

and input devices beyond the

traditional desktop.

Semtech is a registered trademark of Semtech

Corporation. KeyCoder is a trademark of Semtech

Corporation. All other trademarks belong to their

respective companies.

DOC5-GNK-UP60-DS-100

www.semtech.com

1

ORDERING CODE

Package Options

42-pin SDIP

44-pin QFP

Pitch

1.778 mm

0.8 mm

TA=-20° C to +85° C

UR5HCGNK-UP60-SP

UR5HCGNK-UP60-FB

Other Materials

Type

Order number

KeyCoder™ USB Eval. Kit

Evaluation Kit

EVK5-GNK-UP60-XXX

BLOCK DIAGRAM FOR THE KEYCODER™ USB

LED drive lines

3

Power Management

Section

LED interface

Power-on Reset

16-bit Timer

RESET

Columns

18

Keyboard

matrix

Rows

8

Keyboard Interface

USB Interface

3.3V

D+

D-

Oscillator circuit

XIN

XOUT

DOC5-GNK-UP60-DS-100

www.semtech.com

2

FUNCTIONAL DESCRIPTION

PIN DEFINITIONS

The KeyCoder™ USB consists

functionally of six major sections

(see the Functional Diagram on

Page 2). These are the Keyboard

Interface, the Power Management

Section, the 16-bit Timer, the

Oscillator Circuit, Power-on Reset,

and the USB Interface.

Mnemonic

Power:

VDD

VSS

VSS1

Reset:

_RESET

Oscillators:

XIN

XOUT

USB:

D-

SDIP

QFP

Type

Name and Function

11

12

15

5

9

6

P

Power supply

Ground

18

12

I

Reset

14

13

8

7

I

O

Oscillator input

Oscillator output

OSCILLATOR

39

40

38

35

36

34

I/O

O

USB D- line

USB D+line

USB reference voltage output: output

pin for pulling up a D- line with a 1.5K Ohm

external resistor

D+

3.3V

The KeyCoder™ USB has a built-in

oscillator circuit capable of

operations with an external 6.00

MHz clock source, a ceramic

resonator (preferably with built-in

load capacitors), or a crystal with

external load capacitors.

Keyboard:

COL00-COL16

COL17

ROW0-ROW3

ROW4-ROW7

LEDs:

36-20

41

3-6

30-14

37

41-44

1-4

O

I

Column lines for scan matrix

Row lines for scan matrix

7-10

I

CAPSLED

NUMLED

SCRLLED

PS/2:

PS2DAT

PS2CLK

1

2

42

39

40

38

O

Caps lock LED: direct drive port

Num lock LED: direct drive port

Scroll lock LED: direct drive port

POWER MANAGEMENT

According to the USB specification,

if there is no activity of the USB port

for 3 ms, the system is considered

to be in a suspended state. The

KeyCoder™ USB, on detecting that

the system is in suspend, will check

the state of the touch screen and

the right button. If there is no touch

pressure detected or no button

pressed, the KeyCoder™ USB

17

16

19

37

11

10

13

31-33

I/O

I

External PS/2 port data line

External PS/2 port clock line

External PS/2 port enable

Not connected

PS2EN

N/C

Note: An underscore before a pin mnemonic denotes an active low signal.

Pin Types Legend: I=Input; O=Output; I/O=Input or Output; P=Power; Al= Analog Input

enters the suspended state. In the

suspended state, the IC fully

complies with the USB specification

for power consumption, dissipating

current only in the USB-mandated

pull-up for device identification.

Another technique the The

KeyCoder™ USB uses to conserve

power is called remote wake-up. If

the system relies on the device to

perform wake-up, the IC will send a

resume message to the system

when there is activity on the touch

screen or button.

If the system does not allow remote

wake-up, the KeyCoder™ USB

does not send resume messages to

the system when it is awakened by

activity on the touch screen or

button.

DOC5-GNK-UP60-DS-100

www.semtech.com

3

USB FUNCTIONALITY

USB DESCRIPTORS

The KeyCoder™ USB is a low-

speed USB device that includes

two interfaces: internal keyboard

and external PS/2.

Offset Name

Size

Value Description

Device Descriptor

0

bLength

1

2

1

2

1

0x12

0x01

Descriptor length in bytes: 0x12 = 18

Descriptor type: device

1

2

4

5

6

7

8

bDescriptonType

bcdUSB

bDeviceClass

bDeviceSubClass

bDeviceProtocol

bMaxPacketSize0

idVendor

0x10 01 USB HID spec release number: 01.10

The PS/2 interface supports legacy

Human Input Devices (HID-class

specification). The KeyCoder™

USB uses one interrupt endpoint,

which is shared by the keyboard

and the external PS/2 device.

0x00

0x08

Class code

Sub class code

Protocol code

Maximum EP0 packet size

0x7A 04 Semtech's vendor ID

0x05 07 KeyCoder™ USB Product ID

0x61 00 Device release number: 0.61

10

12

14

15

16

idProduct

bcdDevice

iManufacture

iProduct

iSerialNumber

0x04

0x0E

0x00

Index of manufacturer string descriptor

Index of product string descriptor

Index of serial number string

descriptor: none

Data from the different devices is

distinguished by different report

IDs, as decribed in the USB

Descriptors section. Data can

come from either the PS/2 port or

from the keyboard. The

KeyCoder™ USB manages the

merging of the data and sends the

merged data to the system

17

bNum

1

0x01

Number of possible configurations

Configuration Descriptor

0

1

2

4

bLength

1

2

1

0x09

0x02

Descriptor length in bytes: 9

Descriptor type: configuration

bDescriptorType

wTotalLength

bNumInterface

0x22 00 Total length of data returned

0x02

Number of interfaces supported by this

configuration

5

6

bConfigurationValue

iConfiguration

1

0x01

0x00

Current configuration value

Index of configuration string

descriptor: none

7

8

bmAttribute

MaxPower

1

0xA0

0x32

Configuration characteristics - bus

powered, with remote wakeup

Maximum power consumption of USB

device: 100 mA

Interface Descriptor 0

0

1

2

3

4

5

6

7

8

bLength

1

0x09

0x04

0x00

0x01

0x03

0x01

0x00

Descriptor length in bytes: 9

Descriptor type: interface

Interface number: 0

Alternate setting number: 0

Number of endpoints: 1

Class code: HID

Subclass code: boot interface

Protocol code: keyboard

Index of interface string descriptor:

none

bDescriptorType

bInterfaceNumber

bAlternateSetting

bNumEndpoints

bInterfaceClass

bInterfaceSubClass

bInterfaceProtocol

iInterface

HID Descriptor 0

0

1

2

4

5

6

7

bLength

bDescriptorType

bcdHID

bCountryCode

bNumDescriptor

bDescriptorType

wDescriptorLength

1

2

1

2

0x09

0x21

Descriptor length in bytes: 9

Descriptor type: HID

0x00 01 HID Spec release number 01.00

0x00

0x01

0x22

Hardware target country

Number of class descriptors

Report descriptor type

0x3F 00 Total length of report descriptor in

bytes: 63

Endpoint Descriptor 0

0

1

2

3

4

6

bLength

bDescriptorType

1

2

1

0x07

0x05

0x81

0x03

Descriptor length in bytes: 7

Descriptor type: endpoint

Endpoint address

Endpoint attributes

0x03 00 Packet size: 3

0x10

Polling rate

DOC5-GNK-UP60-DS-100

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4

USB DESCRIPTORS (CONT’D)

KEYBOARD & PS/2

Offset Name

Size

Value Description

Keyboard matrix scanning:

Interface Descriptor 1

The encoder scans and debounces

an 8 row by 18 column matrix

keyboard. The KeyCoder™ USB

provides internal pull-ups for the

Row Input pins. When active, the

encoder selects one of the column

lines (C0-C18) and then reads the

row data lines (R0-R7). A key

closure is detected as a zero in the

corresponding position of the

matrix.

0

1

2

3

4

5

6

7

8

bLength

1

0x09

0x04

0x00

0x01

0x03

0x01

0x02

0x00

Descriptor length in bytes: 9

Descriptor type: interface

Interface number: 0

Alternate setting number: 0

Number of endpoints: 1

Class code: HID

Subclass code: boot interface

Protocol code: mouse

Index of interface string descriptor:

none

bDescriptorType

bInterfaceNumber

bAlternateSetting

bNumEndpoints

bInterfaceClass

bInterfaceSubClass

bInterfaceProtocol

iInterface

HID Descriptor 1

0

1

2

4

5

6

7

bLength

bDescriptorType

bcdHID

bCountryCode

bNumDescriptor

bDescriptorType

wDescriptorLength

1

2

1

2

0x09

0x21

Descriptor length in bytes: 9

Descriptor type: HID

A complete scan cycle for the

entire keyboard takes

0x00 01 HID Spec release number 01.00

0x00

0x01

0x22

Hardware target country

Number of class descriptors

Report descriptor type

approximately 10 ms. Each key

found pressed is debounced for a

period of 20 ms. Once the key is

verified, the corresponding key

code(s) are loaded into the transmit

buffer of the USB communication

channel.

0x34 00 Total length of report descriptor in

bytes: 52

Endpoint Descriptor 1

0

1

2

3

4

6

bLength

bDescriptorType

1

2

1

0x07

0x05

0x82

0x03

Descriptor length in bytes: 7

Descriptor type: endpoint

Endpoint address

Endpoint attributes

0x08 00 Packet size: 8

0x10

External PS/2 port:

Polling rate

The external PS/2 port allows the

user to connect legacy PS/2

devices to the USB host system.

Standard 104 keyboards and PS/2

mice, with support for MouseWheel,

can be hot-plugged and

immediately begin communicating

with the host.

DOC5-GNK-UP60-DS-100

www.semtech.com

5

USB DESCRIPTORS (CONT’D)

Offset Data

Description

Value

Report Descriptor 0

0

2

4

6

0x05 01

0x09 06

0xA1 01

0x05 07

0x19 E0

0x29 E7

0x15 00

0x25 01

0x75 01

0x95 08

0x81 02

0x75 08

0x95 01

0x81 01

0x95 06

0x75 01

0x05 08

0x19 01

0x29 06

0x91 02

0x95 01

0x75 01

0x91 03

0x95 06

0x75 08

0x15 00

0x25 65

0x05 07

0x19 00

0x29 65

0x81 00

0xC0

Usage Page

Usage

Collection

Generic Desktop

Keyboard

Application

Key codes

224

231

0

1

Usage page

Usage Minimum

Usage Maximum

Logical Minimum

Logical Maximum

Report Size

Report Count

Input

Report Size

Report Count

Input

Report Count

Report Size

Usage Page

Usage Minimum

Usage Maximum

Output

8

10

12

14

16

18

20

22

24

26

28

30

32

34

36

38

40

42

44

46

48

50

52

54

56

58

60

62

1

8

Data, variable, absolute

8

1

Constant

6

1

Page # for LEDs

1

6

Data, variable, absolute

1

2

Constant

6

8

0

101

Key codes

0

101

Data, array

Report Count

Report Size

Output

Report Count

Report Size

Logical Minimum

Logical Maximum

Usage page

Usage Minimum

Usage Maximum

Input

End Collection

DOC5-GNK-UP60-DS-100

www.semtech.com

6

USB DESCRIPTORS (CONT’D)

Offset Data

Mnemonic

Value

Report Descriptor 1

0

2

4

6

0x05 01

0x09 02

0xA1 01

0x09 01

0xA1 00

0x05 09

0x19 01

0x29 03

0x15 00

0x25 01

0x95 03

0x75 01

0x81 02

0x95 01

0x75 05

0x81 01

0x05 01

0x15 81

0x25 7F

0x75 08

0x95 03

0x09 30

0x09 31

0x09 38

0x81 06

0xC0

Usage page

Usage

Collection

Usage

Collection

Generic Desktop

Mouse

Application

Pointer

Physical

Buttons

1

3

0

1

3

1

Data, variable, absolute

1

5

Constant

Generic Desktop

-127

127

8

3

X

Y

8

10

12

14

16

18

20

22

24

26

28

30

32

34

36

38

40

42

44

46

48

50

51

Usage page

Usage minimum

Usage maximum

Logical minimum

Logical maximum

Report count

Report size

Input

Report count

Report size

Input

Usage page

Logical minimum

Logical maximum

Report size

Report count

Usage

Input

End collection

Wheel

Data, variable, relative

0xC0

DOC5-GNK-UP60-DS-100

www.semtech.com

7

KEY MAP FOR THE FUJITSU FKB7401 KEYBOARD

Key map for the Fujitsu FKB7401 keyboard

Rows (R0-R7)

0

1

2

3

4

5

6

7

0

1

`

F1

Tab

1

CapsLk

FN

F5

F2

F6

ESC

F3

F7

2

Q

W

2

F4

F8

3

Fn

4

LShift

RShift

5

V

F

H

C

T

4

B

J

3

5

7

E

6

R

Y

6

G

U

N

7

S

D

A

M

Space

8

LWin

X

9

K

Z

8

,

!

F9

10

11

12

13

14

15

16

17

RAlt

LAlt

LCtrl

RCtrl

RWin

O

LArr

L

;

9

]

/

=

0

[

P

-

NumLk Pause

F10

DnArr WinApp

.

F11

\

BkSp

Enter

RArr

UpArr

F12

Insert

Del

DOC5-GNK-UP60-DS-100

www.semtech.com

8

KEYBOARD LAYOUT FOR THE FUJITSU FKB7401 KEYBOARD

Keyboard layout for the Fujitsu FKB7401

Num Lk

Scr Lk

Insert

Prt Sc

Delete

SysRq

Pause

Break

Esc

F1

F2

F3

F4

F5

F6

F7

F8

F9

F10

F11

F12

~

`

!

1

@

2

#

3

$

4

%

5

^

6

&

7

*

8

(

9

)

0

_

-

+

=

Backspace

Home

PgUp

PgDn

End

{

[

}

]

|

\

Tab

Q

W

E

R

T

Y

U

I

O

P

Caps

Lock

:

;

"

'

A

S

D

F

G

H

J

K

L

Enter

<

,

>

.

?

/

Shift

Fn

Z

X

C

V

B

N

M

Shift

Ctrl

Alt

DOC5-GNK-UP60-DS-100

www.semtech.com

9

SUGGESTED INTERFACING FOR THE KEYCODER™ USB UR5HCGNK-UP60-FB

7

8

5

2

3

8

Xin

12

5

RESET

VDD

40

39

38

NUMLED

CAPSLED

SCRLLED

7

9

6

Xout

VSS

VSS1

35

36

D -

D +

31

33

32

N/C

34

3.3V

5

6

DOC5-GNK-UP60-DS-100

www.semtech.com

10

MECHANICALS FOR THE SDIP PACKAGE

#42

#22

#21

0 ~ 15 ˚

#1

39.10 ± 0.2

(1.77)

0.50 ± 0.1

1.00 ± 0.1

1.778

DOC5-GNK-UP60-DS-100

www.semtech.com

11

MECHANICALS FOR THE QFP PACKAGE

0~8

13.20 ± 0.30

10.00 ± 0.2

0.1 MAX

#44

#1

+ 0.10

- 0.05

0.0 MIN

2.05 ± 0.1

2.30 MAX

0.35

0.80

1.00

DOC5-GNK-UP60-DS-100

www.semtech.com

12

ELECTRICAL SPECIFICATIONS

Absolute Maximum Ratings

Ratings

Supply Voltage

Symbol

Value

-0.3 to 7.0

Vss -0.3 to Vdd +0.3

20

Unit

V

Vdd

Vin

I

Input Voltage

Current Drain per Pin

(not including Vss or Vdd)

Operating Temperature

UR5HCGNK-UP60

mA

Ta

T low to T high

-20 to +85

-40 to +125

°C

Storage Temperature Range

Tstg

DC Electrical Characteristics, Temperature range=T low to T high unless otherwise noted)

Characteristic

Symbol

Min

Typ

Max

Unit

Supply Voltage

3.0

5.0

5.5

V

Output Voltage (10 µA load)

Voh

Vol

Vih

Vil

Vdd–0.1

V

0.1

Vdd

0.2xVdd

+/- 10

Input High Voltage

Input Low Voltage

Input Current

0.8 x Vdd

Vss

V

µA

Iin

Supply Current

(Vdd=5.0 Vdc+/-10%, Vss=0)

Idd

3.0

TBD

mA

Control Timing (Vdd=5.0 Vdc +/-10%, Vss=0 Vdc, Temperature range=T low to T high unless otherwise noted)

Characteristic

Symbol

Min

Typ

Max

Unit

Frequency of Operation

Crystal Option

External Clock Option

fosc

6.0

MHz

DOC5-GNK-UP60-DS-100

www.semtech.com

13

For sales information

and product literature,

contact:

HID & System Mgmt Division

Semtech Corporation

652 Mitchell Road

Newbury Park, CA 91320

hidinfo@semtech.com

http://www.semtech.com

805 498 2111 Telephone

805 498 3804 Telefax

Semtech Western Regional Sales

805-498-2111 Telephone

805-498-3804 Telefax

Semtech Central Regional Sales

972-437-0380 Telephone

972-437-0381 Telefax

Semtech Eastern Regional Sales

203-964-1766 Telephone

203-964-1755 Telefax

Semtech Asia-Pacific Sales Office

+886-2-2748-3380 Telephone

+886-2-2748-3390 Telefax

Semtech Japan Sales Office

+81-45-948-5925 Telephone

+81-45-948-5930 Telefax

Semtech Korea Sales Sales

+82-2-527-4377 Telephone

+82-2-527-4376 Telefax

Northern European Sales Office

+44 (0)2380-769008 Telephone

+44 (0)2380-768612 Telefax

Southern European Sales Office

+33 (0)1 69-28-22-00 Telephone

+33 (0)1 69-28-12-98 Telefax

Central European Sales Office

+49 (0)8161 140 123 Telephone

+49 (0)8161 140 124 Telefax

Semtech is a registered trademark of Semtech Corporation.

KeyCoder is a trademark of Semtech Corporation. All other

trademarks belong to their respective companies.

INTELLECTUAL PROPERTY DISCLAIMER

This specification is provided "as is" with no warranties whatsoever

including any warranty of merchantability, fitness for any particular

purpose, or any warranty otherwise arising out of any proposal,

specification or sample. A license is hereby granted to reproduce

and distribute this specification for internal use only. No other

license, expressed or implied to any other intellectual property

rights is granted or intended hereby. Authors of this specification

disclaim any liability, including liability for infringement of proprietary

rights, relating to the implementation of information in this

specification. Authors of this specification also do not warrant or

represent that such implementation(s) will not infringe such rights.

DOC5-GNK-UP60-DS-100

14

www.semtech.com


型号：	UR5HCGNK-UP60-FB
厂家：	SEMTECH CORPORATION
描述：	Microprocessor Circuit, CMOS, PQFP44, 0.80 MM PITCH, QFP-44 外围集成电路
文件：	总14页 (文件大小：131K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

UR5HCGNK-UP60-FB [SEMTECH]

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