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AT43USB326 датащи(PDF) 57 Page - ATMEL Corporation

номер детали AT43USB326
подробное описание детали  Multimedia USB Keyboard Controller with Embedded Hub
PDF  102 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT43USB326 датащи(HTML) 57 Page - ATMEL Corporation

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AT43USB326
3313D–USB–04/06
Hub Endpoint 0 Byte Count Register – HBYTE_CNT0
Function Endpoint 0..2 Byte Count Register – FBYTE_CNT0..2
The contents of these registers stores the number of bytes to be sent or that was received by
USB Hub and Function endpoints. This count includes the 16-bit CRC. To get the actual byte
count of the data, subtract the count in the register by 2. The maximum byte count supported
by the AT43USB326 is 8 bytes. Hub endpoint 1 has no byte count register.
• Bit 7..6 – Reserved
These bits are reserved in the AT43USB326 and will read as zero.
• Bit 5..0 – BYTCT5..0: Byte Count – Length of Endpoint Data Packet
Bit
7
6
543
2
1
0
Hub EP0 $1FCF
BYTCT5
BYTCT4
BYTCT3
BYTCT2
BYTCT1
BYTCT0
HBYTE_CNT0
Function EP0 $1FCD
BYTCT5
BYTCT4
BYTCT3
BYTCT2
BYTCT1
BYTCT0
FBYTE_CNT0
Function EP1 $1FCC
BYTCT5
BYTCT4
BYTCT3
BYTCT2
BYTCT1
BYTCT0
FBYTE_CNT1
Function EP2 $1FCB
BYTCT5
BYTCT4
BYTCT3
BYTCT2
BYTCT1
BYTCT0
FBYTE_CNT2
Read/Write
R
R
R
R/W
R/W
R/W
R/W
R/W
Initial Value
0
0
0
0
0
0
0
0



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