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TUSB2136 数据表(PDF) 20 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) 20 Page - Texas Instruments

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2−7
Table 2−4 illustrates the EDB entries for EDB-1 to EDB-3. EDB-0 registers are described separately.
Table 2−4. EDB Entries in RAM (n = 1 to 3)
Offset
ENTRY NAME
DESCRIPTION
07
EPSIZXY_n
I/O endpoint_n: X/Y buffer size
06
EPBCTY_n
I/O endpoint_n: Y byte count
05
EPBBAY_n
I/O endpoint_n: Y buffer base address
04
SPARE
Not used
03
SPARE
Not used
02
EPBCTX_n
I/O endpoint_n: X byte count
01
EPBBAX_n
I/O endpoint_n: X buffer base address
00
EPCNF_n
I/O endpoint_n: configuration
2.4.1
OEPCNF_n: Output Endpoint Configuration (n = 1 to 3)
7
6
5
4
3
210
UBME
ISO
TOGLE
DBUF
STALL
USBIE
RSV
RSV
R/W
R/W
R/W
R/W
R/W
R/W
R/O
R/O
BIT
NAME
RESET
FUNCTION
1−0
RSV
x
Reserved = 0
2
USBIE
x
USB interrupt enable on transaction completion. Set/clear by MCU.
2
USBIE
x
USBIE = 0
No interrupt
USBIE = 1
Interrupt on transaction completion
3
STALL
0
USB stall condition indication. Set/clear by MCU.
3
STALL
0
STALL = 0
No stall
STALL = 1
USB stall condition. If set by the MCU, a STALL handshake is initiated and the bit is cleared by
the MCU.
4
DBUF
x
Double buffer enable. Set/clear by MCU.
4
DBUF
x
DBUF = 0
Primary buffer only (X-buffer only)
DBUF = 1
Toggle bit selects buffer
5
TOGLE
x
USB toggle bit. This bit reflects the toggle sequence bit of DATA0, DATA1
6
ISO
x
ISO = 0
Non-isochronous transfer. This bit must be cleared by the MCU because only
non-isochronous transfer is supported.
7
UBME
x
USB buffer manager (UBM) enable/disable bit. Set/clear by MCU.
7
UBME
x
UBME = 0
UBM cannot use this endpoint.
UBME = 1
UBM can use this endpoint.
2.4.2
OEPBBAX_n: Output Endpoint X-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 X-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.



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