Datasheet GL641USB Datasheet (GENESYS)

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GL641USB

USB ATA/ATAPI/
COMPACT FLASH CARD
CONTROLLER

SPECIFICATION REVISION 1.2
June 1, 2001

Genesys Logic, Inc.

10F, No.11, Ln.3, Tsao Ti Wei, Shenkeng, Taipei, Taiwan
Tel: [phone] Fax: [phone]
http://www.genesyslogic.com

GL641USB

GL641USB

GL641USBGL641USB

INDEX

1. Features........................................................................................2

2. Functional Overview...................................................................3

3. PIN Definitions and Descriptions...............................................4

4. General Purpose I/O Ports .........................................................5

5. Package Diagram.........................................................................6

Revision 1.2 June 1, 2001

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1. Features

• High performance and low cost solution for USB ATA / ATAPI / Compact Flash controller

• USB Specification Compliance

− Conforms to USB 12Mbps Specification, Version 1.1

− Conforms to USB Storage Class Specification, Version 1.0 (bulk only protocol)

− Supports 1 device address and 4 endpoints (include endpoint 0)

• Operating System Supported

− Windows 2000 & Windows ME

 Supported by Microsoft default driver

− Windows 98 & Windows 98 SE

 Supported by Genesys Logic USB Storage driver

− Mac OS 9.X & Mac OS X

 Supported by Apple default driver or Genesys Logic USB Storage driver

• On-chip 3.3v output for USB D+ pulled up

• Integrated USB transceiver

• External EEPROM interface for customizing VID & PID of USB device

• Support ATA hard disk / ATAPI CD-ROM, CD-RW, MO / Compact Flash card in one chip

• Data transfer rate up to 1.1Mbytes/sec when read/write the USB storage device

• Improved output drivers with slew-rate control to reduce EMI

• 12 MHz external clock

• Internal power-on reset (POR)

• Internal power-fail detector

• Supports suspend/normal mode power management

• Available in cost saving 48-pins LQFP

• Suspend power consumption of bus powered CF card reader is less than 500µA (USB specification)

GL641USB

GL641USB

GL641USBGL641USB

Revision 1.2 June 1, 2001

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2. Functional Overview

The GL641USB is a USB storage class controller that supports ATA/ATAPI/Compact Flash device. It is compliant to
USB 12Mbps protocol and data transfer rate is up to 1.1Mbytes/Sec. It is also compliant to USB Storage Class Bulk
Only protocol. There are 4 endpoints in GL641USB controller. Endpoint 0 is a Control endpoint for this controller. It
is used to initialize this USB device. Endpoint 1 is a Bulk IN endpoint. It is used to read data from the storage device.
Endpoint 2 is a Bulk OUT endpoint. It is used to issue SCSI packet command to the storage device and write data to
the storage device. Endpoint 3 is an Interrupt IN endpoint and not used by USB Storage Class Bulk Only protocol
currently.

Micro-

controller

Endpoint 0

Control

8 Bytes FIFO

GL641USB

GL641USB

GL641USBGL641USB

ATA

ATA

ATAPI

CF

Interface

Endpoint 1

Bulk IN

USB

Registers

&

FIFO

Control

64 Bytes FIFO

Endpoint 2

Bulk OUT

64 Bytes FIFO

Endpoint 3

Interrupt IN

8 Bytes FIFO

Figure 2-1 Block Diagram of GL641USB

USB

Interface

D+

D-

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3. PIN Definitions and Descriptions

Pin No. Name I/O Description

1 PVDD PWR Power supplier for storage device interface
2 D8 I/O Storage device data bus bit 8*
3 D9 I/O Storage device data bus bit 9*
4 D10 I/O Storage device data bus bit 10*
5 D11 I/O Storage device data bus bit 11*
6 PGND PWR Ground for storage device interface
7 D12 I/O Storage device data bus bit 12*
8 D13 I/O Storage device data bus bit 13*

9 D14 I/O Storage device data bus bit 14*
10 D15 I/O Storage device data bus bit 15*
11 DIOR# O Storage device read strobe signal*
12 DIOW# O Storage device write strobe signal*
13 INTRQ I Storage device interrupt request signal*
14 DVDD PWR 5V power supplier for internal logic
15 DGND PWR Ground for internal logic
16 Crystal out CLK Crystal clock output
17 Crystal in CLK Crystal clock input
18 GPIO1 I/O General purpose I/O 1
19 GPIO2 I/O General purpose I/O 2
20 V3.3 USB 3.3v power supplier for USB bus
21 D+ USB D+ signal for USB
22 D- USB D- signal for USB
23 AVDD PWR 5V power supplier for USB interface
24 AGND PWR Ground for USB interface
25 GPIO3 I/O General purpose I/O 3
26 GPIO4 I/O General purpose I/O 4
27 TSTMODE I Used at test mode only
28 EXTRST# I Used at test mode only
29 GPIO8 I/O General purpose I/O 8
30 GPIO7 I/O General purpose I/O 7
31 GPIO6 I/O General purpose I/O 6
32 GPIO5 I/O General purpose I/O 5
33 DGND PWR Ground for internal logic
34 DVDD PWR 5V power supplier for internal logic
35 CS3FX# O Storage device register bank 3 selector*
36 CS1FX# O Storage device register bank 1 selector*
37 A0 O Storage device address bus bit 0*
38 A1 O Storage device address bus bit 1*
39 A2 O Storage device address bus bit 2*
40 D0 I/O Storage device data bus bit 0*
41 D1 I/O Storage device data bus bit 1*
42 D2 I/O Storage device data bus bit 2*
43 D3 I/O Storage device data bus bit 3*
44 PGND PWR Ground for storage device interface
45 D4 I/O Storage device data bus bit 4*
46 D5 I/O Storage device data bus bit 5*
47 D6 I/O Storage device data bus bit 6*
48 D7 I/O Storage device data bus bit 7*

Table 3-1 GL641USB Pin Definitions and Descriptions

* Output voltage of this pin is equivalent to voltage supplied by PVDD.

Input voltage of this pin can be from 0v to 5v, and it threshold is 1v ~ 2v.
Therefore, these pins can support 3v/5v interface according to voltage of PVDD.

GL641USB

GL641USB

GL641USBGL641USB

Revision 1.2 June 1, 2001

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GL641USB

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GL641USBGL641USB

4. General Purpose I/O Ports

The GL641USB interface with peripherals is conducted via up to 8 GPIO signals. Host driver can control all of these
I/O pins directly. The GL641USB provides 3 vendor specific control transfer functions to host driver. One of these
functions is used to set I/O pins direction. One is used to read data from I/O pins. And the other one is used to write
data to I/O pins.

GPIO1 is used as a power on stra pping to distinguish t he application is used for Compact Flash card or other
ATA/ATAPI device. If this pin is pulled up when USB bus reset, GL641USB will treat the connected device is a
Compact Flash card. Otherwise, GL641USB will assume the connected device is an ATA/ATAPI device.

GPIO2 is used as power control signal for bus powered device, especially for Compact Flash card reader. Hence USB
bus powered device must consume less than 500uA when suspend mode, power of the Compact Flash card should be
turned off when system suspend.

GPIO3 is connected to external reset pin of ATA/ATAPI/Compact Flash card. The GL641USB can only work at True
IDE mode when Compact Flash card is connected.

GPIO4~GPIO7 are used as serial EEPROM interface. System maker can write their own vendor ID and product ID
into the serial EEPROM by a test program provided by Genesys Logic.

GPIO8 is used for Compact Flash card reader. This pin is pulled up by a resistor on board and connected to ground
when Compact Flash card is inserted. This is used as a card detection signal.

Revision 1.2 June 1, 2001

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5. Package Diagram

D
D1

48-LQFP

GL641USB

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GL641USBGL641USB

E

E1

b

e

C1

A2

A

0.25

L

L1

A1

SYVBOIS MIN MAX

A 1.6
A1 0.05 0.15
A2 1.35 1.45
C1 0.09 0.16

D 9.00BSC
D1 7.00BSC

E 9.00BSC

E1 7.00BSC

e 0.5BSC
b 0.17 0.27

L 0.45 0.75

L1 1 REF

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