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參數資料
型號: W6691
廠商: WINBOND ELECTRONICS CORP
英文描述: ISDN S/T Interface Transceiver
中文描述: 綜合業務數字網的S / T接口收發器
文件頁數: 79/106頁
文件大小: 428K
代理商: W6691
Preliminary W6691
Publication Release Date: Sep 2001
79 Revision 1.1
Bit 7-5 are fixed at “1” and bit 3 is fixed at '0". This means MO0C interrupt cannot be masked. The interrupt is
disabled when the bit is set.
8.9 Miscellaneous Register
8.9.1 Timer 1 Register TIMR1 Read/Write Address 38H
Value after reset : 00H
7
6
5
4
3
2
1
0
T1MD
CNT6
CNT5
CNT4
CNT3
CNT2
CNT1
CNT0
T1MD Timer1 Mode
0 = Single Count Down Mode: The timer counts once and generates a T1EXP interrupt when expires.
1 = Periodical Count Down Mode: The timer counts periodically and generates an T1EXP interrupt at each
expiration.
CNT6-0 Count Value
The expiration time is defined as:
T1 = CNT[6:0] * 0.1 second
After writing this register, STT1 bit in D_CMDR register must be set to start the timer. This register can be read
only after the timer has been started. The read value indicates the timer's current count value. In case layer 1
is not activated, a C/I command "ECK" must be issued in addition to the STT1 command to start the timer.
Note:
The timer is stopped when it expires in Single Count Down Mode(T1MD=0) or TIMR1 register is re-
written in both mode.
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