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AT43USB325 bảng dữ liệu(PDF) 72 Page - ATMEL Corporation

tên linh kiện AT43USB325
Giải thích chi tiết về linh kiện  Multimedia USB Keyboard Controller with Embedded Hub
PDF  109 Pages
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nhà sản xuất  ATMEL [ATMEL Corporation]
Trang chủ  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT43USB325 bảng dữ liệu(HTML) 72 Page - ATMEL Corporation

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72
3355C–USB–4/05
AT43USB325
8.3
Endpoint Registers
8.3.1
Hub Endpoint 0 Control Register – HENDP0_CR
8.3.2
Function Endpoint 0 Control Register – FENDP0_CR
• Bit 7 – EPEN: Endpoint Enable
0 = Disable endpoint
1 = Enable endpoint
• Bit 6..4 – Reserved
These bits are reserved in the AT43USB325 and will read as zero.
• Bit 3 – DTGLE: Data Toggle
Identifies DATA0 or DATA1 packets. This bit will automatically toggle and requires clearing by
the firmware only in certain special circumstances.
• Bit 2 – EPDIR: Endpoint Direction
0 = Out
1 = In
• Bit 1, 0 – EPTYPE: Endpoint Type
These bits must be programmed as 0, 0.
Bit
7
6
543
2
1
0
$1FE7
EPEN
–
–
–
DTGLE
EPDIR
EPTYPE1
EPTYPE0
HENDP0_CR
$24 ($44)
EPEN
–
–
–
DTGLE
EPDIR
EPTYPE1
EPTYPE0
FENDP0_CR
Read/Write
R/W
R
R
R
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0



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