PCI-SIO4 User Manual
General Standards Corporation
8302A Whitesburg Drive Huntsville, AL 35802, Phone: (256) 880-8787
24
0100
Monosync
0101
Bisync
0110
HDLC
0111
Transparent Bisync
1000
NBIP
1001
802.3
1010
Reserved
1011
Reserved
1100
Slaved Monosync
1101
Reserved
1110
HDLC Loop
1111
Reserved
D4..7
Tx Submode 3..0
2.3.3
C
HANNEL
C
OMMAND
/S
TATUS
R
EGISTER
(CCSR)
2.3.3.1
Low: (LOC 0xn04)
D0
RO
RxACK
D1
RO
TxACK
D2..4
HDLC Tx Last Character Length (encoded as follows):
000
8 bits
001
1 bit
010
2 bits
011
3 bits
100
4 bits
101
5 bits
110
6 bits
111
7 bits
D5
Reserved
D6
RO
Loop Sending
D7
RO
On Loop
2.3.3.2
High: (LOC 0xn05)
D0..1
DPLL Adjust/Sync Edge (encoded as follows):
00
Both Edges
01
Rising Edge Only
10
Falling Edge Only
11
Adjust/Sync Inhibit
D2
RW
Clocks Missed Latched/Unlatch
D3
RW
Clocks Missed Latched/Unlatch
D4
RW
DPLL in Sync/Quick Sync
D5
WO
RCC FIFO Clear
D6
RO
RCC FIFO Valid
D7
RO
RCC FIFO Overflow
2.3.4
C
HANNEL
C
ONTROL
R
EGISTER
(CCR)