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參數(shù)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(yè)務數(shù)字網(wǎng)的S / T接口收發(fā)器
文件頁數(shù): 87/106頁
文件大小: 428K
代理商: W6691
Preliminary W6691
Publication Release Date: Sep 2001
87 Revision 1.1
8.11 B1 Channel HDLC controller Register Memory Map
TABLE 8.8 B1 CHANNEL HDLC CONTROLLER REGISTER MEMORY MAP
Offset R/W
50
51
52
53
54
55
56
57
58
59
5A
5B
5C
5D
5E
5F
Name
B1_RFIFO
B1_XFIFO
7
6
5
4
3
2
1
0
R
W
R/W B1_CMDR RACK
R/W B1_MODE MMS
R_clr B1_EXIR
R/W B1_EXIM
R
B1_STAR
R/W B1_ADM1 MA17
R/W B1_ADM2 MA27
R/W B1_ADR1 RA17
R/W B1_ADR2 RA27
R
B1_RBCL RBC7
R
B1_RBCH
R/W B1_IDLE
Reserved
0
XACT
Reserved
RDOV
RDOV
RMB
MA14
MA24
RA14
RA24
RBC4
RBC12 RBC11 RBC10 RBC9
IDLE4
IDLE3
RRST
ITF
0
0
XMS
XME
FTS1
XRST
FTS0
RACT
B1_128 SW56
0
1
0
RMR
RMR
RDOV
MA16
MA26
RA16
RA26
RBC6
RME
RME
CRCE
MA15
MA25
RA15
RA25
RBC5
LOV
IDLE5
0
1
0
0
1
XFR
XFR
XDUN
XDUN
XBZ
MA10
MA20
RA10
RA20
RBC0
RBC8
IDLE0
XDOW
MA12
MA22
RA12
RA22
RBC2
0
MA13
MA23
RA13
RA23
RBC3
MA11
MA21
RA11
RA21
RBC1
0
0
IDLE7
IDLE6
IDLE2
IDLE1
8.11.1 B1_ch receive FIFO
B1_RFIFO
Read
Address 50H
The B1_RFIFO is a 128-byte depth FIFO memory with programmable threshold. The threshold value
determines when to generate an interrupt.
When more than a threshold length of data has been received, a RMR interrupt is generated. After an RMR
interrupt, 64 or 96 bytes can be read out, depending on the threshold setting.
In transparent mode, when the end of frame has been received, a RME interrupt is generated. After an RME
interrupt, the number of bytes available is less than or equal to the threshold value.
8.11.2 B1_ch transmit FIFO
B1_XFIFO
Write
Address 51H
The B1_XFIFO is a 128-byte depth FIFO with programmable threshold value. The threshold setting is the
same as B1_RFIFO.
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