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參數資料
型號: W81E381
廠商: WINBOND ELECTRONICS CORP
英文描述: FULL SPEED USB INTEGRATED MICROCONTROLLER
中文描述: 全速USB集成微控制器
文件頁數: 48/63頁
文件大小: 695K
代理商: W81E381
W81E381D/W81E381AD
Publication Release Date: January 2002
- 48 - Revision 0.52
4.5.25 Register Descriptions - SC Control SFRs (AD)
SCECR
Address: S:ADH
Reset State: 0000 0000H
Extended Control Register of Smart Card Reader (SCECR).
7
6
5
4
3
2
1
0
CRDRST
PWRENP
VCC_EN
CLKSTP
SCIO
SCRRST
Bit
Number
7
Bit
Mnemonic
CRDRST
Function
To issue a reset signal to SC
1: High -> Low
0: Low -> High
To determine the polarity of the VCC_EN signal
If WCE=0 => 1: Positive, 0: Negative
If WCE=1 => 0: Positive, 1: Negative
1: Enable SC power supply
0: Disable SC power supply
Reserved
6
PWRENP
5
VCC_EN
4
-
3
-
Reserved
2
CLKSTP
1: To stop the SC clock
0: To start the SC clock
SCIO direction control signal.
1: Transmit data to card
0: Receive data from card
Resynchronize SC interface (reload default value to SC related registers,
include itself)
1
SCIO
0
SCRRST
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