參數(shù)資料
型號(hào): GL641USB
廠商: Electronic Theatre Controls, Inc.
英文描述: USB ATA/ATAPI/ COMPACT FLASH CARD CONTROLLER
中文描述: 的USB的ATA / ATAPI / CF卡控制器
文件頁(yè)數(shù): 4/7頁(yè)
文件大?。?/td> 54K
代理商: GL641USB
Revision 1.2
June 1, 2001
-3-
GL641US B
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
USB
Registers
&
FIFO
Control
Endpoint 0
Control
8 Bytes FIFO
Endpoint 1
Bulk IN
64 Bytes FIFO
USB
Interface
D+
D-
Endpoint 2
Bulk OUT
64 Bytes FIFO
Endpoint 3
Interrupt IN
8 Bytes FIFO
ATA
ATAPI
CF
Interface
ATA
Figure 2-1 Block Diagram of GL641USB
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