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參數資料
型號: W81E381D
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: FULL SPEED USB INTEGRATED MICROCONTROLLER
中文描述: FLASH, 12 MHz, MICROCONTROLLER, PQFP48
封裝: 7 X 7 MM, 1.40 MM HEIGHT, LQFP-48
文件頁數: 23/63頁
文件大小: 695K
代理商: W81E381D
W81E381D/W81E381AD
Publication Release Date: January 2002
- 23 - Revision 0.52
4.5.6
Register Descriptions - USB Function SFRs (F1)
EPINDEX
Address: S:F1H
Reset State: XXXX X000H
Endpoint Index Register. This register identifies the endpoint pair. It contains select the transmit and
receive FIFO pair and serve as an index to endpoint-specific SFRs.
7
6
5
4
3
2
1
0
-
-
-
-
-
EPINX2
EPINX1
EPINX0
Bit
Number
7
Bit
Mnemonic
-
Function
Reserved:
The value read from this bit is indeterminate. Write zero to this bit.
Reserved:
The value read from this bit is indeterminate. Write zero to this bit.
Reserved:
The value read from this bit is indeterminate. Write zero to this bit.
Reserved:
The value read from this bit is indeterminate. Write zero to this bit.
Reserved:
The value read from this bit is indeterminate. Write zero to this bit.
Endpoint Index Bit 2:0:
EPINDEX 7:0
= XXXX X000 Function Endpoint 0 -> Control Read/write
= XXXX X001 Function Endpoint 1 -> Bulk In
= XXXX X010 Function Endpoint 2 -> Bulk Out
= XXXX X011 Function Endpoint 3 -> Interrupt In
= XXXX X100 Function Endpoint 4 -> Interrupt Out
6
-
5
-
4
-
3
-
2:0
EPINX2:0
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