W6692 Datasheet, PDF (76/104 Pages) Winbond – PCI Bus ISDN S/T-Controller

Preliminary Data Sheet
W6692 PCI ISDN S/T-Controller
TABLE 8.4 REGISTER SUMMARY: B1 CHANNEL HDLC
Offset R/W
Name
80/20 R B1_RFIFO
84/21 W B1_XFIFO
88/22 R/W B1_CMDR
8C/23 R/W B1_MODE
90/24 R_clr B1_EXIR
94/25 R/W B1_EXIM
98/26 R B1_STAR
9C/27 R/W B1_ADM1
A0/28 R/W B1_ADM2
A4/29 R/W B1_ADR1
A8/2A R/W B1_ADR2
AC/2B R B1_RBCL
B0/2C R B1_RBCH
B4/2D R/W B1_IDLE
7
RACK
MMS
MA17
MA27
RA17
RA27
RBC7
IDLE7
6
RRST
ITF
RMR
RMR
RDOV
MA16
MA26
RA16
RA26
RBC6
IDLE6
5
RACT
EPCM
RME
RME
CRCE
MA15
MA25
RA15
RA25
RBC5
LOV
IDLE5
4
3
2
1
XACTB
BSW1
RDOV
RDOV
RMB
MA14
MA24
RA14
RA24
RBC4
RBC12
IDLE4
B1_128K XMS
BSW0 SW56
MA13
MA23
RA13
RA23
RBC3
RBC11
IDLE3
XDOW
MA12
MA22
RA12
RA22
RBC2
RBC10
IDLE2
XME
FTS1
XFR
XFR
MA11
MA21
RA11
RA21
RBC1
RBC9
IDLE1
0
XRST
FTS0
XDUN
XDUN
XBZ
MA10
MA20
RA10
RA20
RBC0
RBC8
IDLE0
8.2.1 B1_ch receive FIFO B1_RFIFO
Read
Address 80H/20H
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.
8.2.2 B1_ch transmit FIFO
B1_XFIFO
Write
Address 84H/21H
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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Publication Release Date: Sep 30, 1999
Revision 0.9