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TUSB2136 数据表(PDF) 23 Page - Texas Instruments

部件名 TUSB2136
功能描述  Universal Serial Bus Compound Hub with General Purpose 8052 MCU
PDF  53 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

TUSB2136 数据表(HTML) 23 Page - Texas Instruments

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2−10
2.4.9
IEPBCTX_n: Input Endpoint X-Byte Count (n = 1 to 3)
7
6
5
4
3
210
NAK
C6
C5
C4
C3
C2
C1
C0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
BIT
NAME
RESET
FUNCTION
6−0
C[6:0]
x
X-buffer byte count:
000 0000b
³ Count = 0
000 0001b
³ Count = 1 byte
L
011 1111b
³ Count = 63 bytes
100 0000b
³ Count = 64 bytes
Any value
≥ 100 0001b produces unpredictable results.
7
NAK
x
NAK = 0 Buffer contains a valid packet for host-in transaction
NAK = 1 Buffer is empty (host-in request is NAK)
2.4.10 IEPBBAY_n: Input Endpoint Y-Buffer Base-Address (n = 1 to 3)
7
6
5
4
3
210
A10
A9
A8
A7
A6
A5
A4
A3
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
BIT
NAME
RESET
FUNCTION
7−0
A[10:3]
x
A[10:3] of Y-buffer base address (padded with 3 LSB of zeros for a total of 11 bits). This value is set by the
MCU. UBM or DMA uses this value as the start-address of a given transaction. Furthermore, UBM or DMA
does not change this value at the end of a transaction.
2.4.11 IEPBCTY_n: Input Endpoint Y-Byte Count (n = 1 to 3)
7
6
5
4
3
210
NAK
C6
C5
C4
C3
C2
C1
C0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
BIT
NAME
RESET
FUNCTION
6−0
C[6:0]
x
Y-buffer byte count:
000 0000b
³ Count = 0
000 0001b
³ Count = 1 byte
L
011 1111b
³ Count = 63 bytes
100 0000b
³ Count = 64 bytes
Any value
≥ 100 0001b produces unpredictable results.
7
NAK
x
NAK = 0 Buffer contains a valid packet for host-in transaction
NAK = 1 Buffer is empty (host-in request is NAK)



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