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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： | 59/106頁 |
| 文件大?。?/td> | 428K |
| 代理商： | W6691 |
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Preliminary W6691
Publication Release Date: Sep 2001
59 Revision 1.1
8.7.2 D_ch transmit FIFO
D_XFIFO
Write Address 01H
The D_XFIFO has a length of 64 bytes.
After an D_XFR interrupt, up to 32 bytes of data can be written into this FIFO for transmission. At the first time
transmission, up to 64 bytes of data can be written.
8.7.3 D_ch command register
D_CMDR
Write
Address 02H
Value after reset: 00H
7
6
5
4
3
2
1
0
RACK
RRST
0
STT1
XMS
0
XME
XRST
RACK Receive Acknowledge
After a D_RMR or D_RME interrupt, the processor must read out the data in D_RFIFO and then sets this bit
to acknowledge the interrupt. Writing “0” to this bit has no effect. If RACK bit is set to “1” for operating
“Receiver Acknowledge”, It is not necessary to reset RACK bit to “0” by host processor. That is to say, once
RACK is set to “1”, RACK bit is reset to “0” by W6691 automatically.
RRST Receiver Reset
Setting this bit resets the D_ch HDLC receiver and clears the D_RFIFO data. Writing “0” to this bit has no
effect. If RRST bit is set to “1” for operating “Receiver Reset”, It is not necessary to reset RRST bit to “0” by
host processor. That is to say, once RRST is set to “1”, RRST bit is reset to “0” by W6691 automatically.
STT1 Start Timer 1
The timer 1 is started when this bit is set to one. The timer is stopped when it expires or by a write of the
TIMR1 register. Writing “0” to this bit has no effect. If SST1 bit is set to “1” for operating “Start Timer1”, It is not
necessary to reset STT1 bit to “0” by host processor. That is to say, once STT1 is set to “1”, STT1 bit is reset
to “0” by W6691 automatically.
相關PDF資料 |
PDF描述 |
|---|---|
| W6691CD | ISDN S/T Interface Transceiver |
| W6691CP | ISDN S/T Interface Transceiver |
| W6692 | PCI Bus ISDN S/T Interface Controller(PCI總線的ISDN S/T接口控制器) |
| W6693A | USB Bus ISDN S/T Interface Controller(USB總線的ISDN S/T接口控制器) |
| W6694 | PCI Bus ISDN S/T Interface Controller(PCI總線的ISDN S/T接口控制器) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W66910 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| W66910CD | 制造商:WINBOND 制造商全稱:Winbond 功能描述:TE Mode ISDN S/T-Controller with Microprocessor Interface |
| W6691CD | 制造商:WINBOND 制造商全稱:Winbond 功能描述:ISDN S/T Interface Transceiver |
| W6691CP | 制造商:WINBOND 制造商全稱:Winbond 功能描述:ISDN S/T Interface Transceiver |
| W6692 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:PCI Bus ISDN S/T-Controller |
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