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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: 15/106頁
文件大小: 428K
代理商: W6691
Preliminary W6691
Publication Release Date: Sep 2001
15 Revision 1.1
SX2
46
O
S/T bus transmitter output (negative).
XTAL1
40
I
Crystal or Oscillator clock input. The clock frequency:
7.68MHz
±
100PPM.
Crystal clock output. Left unconnected when using oscillator.
XTAL2
41
O
Functional Test
Used to enable normal operation (1) or enter test mode (0).
TESTP
2
I
Timer2 Expiration Output
TOUT2
38
O
Timer 2 output. A square wave with 50 % duty cycle, 1~63 ms
period can be generated.
Clock Pulse
OSC768
8
O
It provides output 7.68MHz clock. It does not synchronize to S
interface.
Operating Mode
M0
31
I
Setting of operating mode
M1
32
I
Setting of operating mode
Peripheral Input Port and Output Port
O
Activate Layer1 Status.This pin can be pulled to low level or
programmed by microprocessor by ACTL2 : ACTL1S when Layer1
operates in activate.
ACTL2 : ACTL1S:
0: When Layer 1 operates in activate state, ACTL1S pin is pulled
to low level. In contrast, if Layer 1 operates in deactivate state,
ACTL1S pin is driven to high level.
1: The ACTL1 output level is programmed by microprocessor
(ACTL2 : ACLT1S).
ACTL1S
7
Power and Ground
VDD
5, 22, 36, 49, 58
I
Digital Power Supply (3V
±
5%).
Analog Power Supply (3V
±
5%).
Digital Ground.
VDDA
44
I
VSS
6, 21, 35, 50, 59
I
VSSA
41
I
Analog Ground.
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