參數(shù)資料
型號: TUSB5052B
廠商: Texas Instruments, Inc.
英文描述: USB to 2-Serial + 1-Parallel Controller With Configurable Optional Hub
中文描述: USB轉(zhuǎn)2 -串行接口1 -可配置可選并行控制器集線器
文件頁數(shù): 25/84頁
文件大?。?/td> 276K
代理商: TUSB5052B
4–7
Table 4–5. EDB Entries in RAM (n = 1 to 7)
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
4.3.1
OEPCNF_n: Output Endpoint Configuration (n = 1 to 7)
UBME
ISO=0
TOGLE
DBUF
STALL
USBIE
RSV
RSV
7
6
5
4
3
2
1
0
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/cleared by the MCU.
USBIE = 0 No interrupt
USBIE = 1 Interrupt on transaction completion
3
STALL
0
USB stall condition indication. Set/cleared by the MCU
STALL = 0
STALL = 1
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/cleared by the MCU.
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 since only non-isochronous transfer is
supported
7
UBME
x
UBM enable/disable bit. Set/cleared by the MCU
UBME = 0 UBM cannot use this endpoint
UBME = 1 UBM can use this endpoint
4.3.2
OEPBBAX_n: Output Endpoint X-Buffer Base-Address (n = 1 to 7)
A10
R/W
A9
R/W
A8
R/W
A7
R/W
A6
R/W
A5
R/W
A4
R/W
A3
R/W
7
6
5
4
3
2
1
0
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.
The UBM or DMA uses this value as the start-address of a given transaction. Note that the UBM or DMA does not
change this value at the end of a transaction.
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