User`s manual

'5
I R I
I \
VALID
ENTRY
IN 00-"
'5
'4
'3
12
I
J\
UNUSED
SPECIAL FUNCTIONS REGISTER (SFR) 775012
ROM DATA REGISTER CONTENTS
NPR STATUS REGISTER (NSR) 775014
11 10 09 08 07
06
05
04
R
I
R
1
I NTERRUPT CODE
UNUSED
RESERVED REGISTER (RIR) 775016
08 07
x_+----+---_+----~--~----~--_+-x
03 02 01
,[
R
LINE NUMBER
CONTROL STATUS REG ISTER (CSR) 775020 (FOR SYNCHRONOUS LINE CARDS)
RING
TRANSITION
CLEAR TO
SEND TRANS
CLEAR
SCAN
CARRIER DATA SET
TRANSITION READY TRANS
MAINTENANCE
MODE
CLEAR
MUX
STEP
DONE SCAN
ENABLE
INTERRUPT
ENABLE
BUSY
CONTROL STATUS REGISTER (CSR) 775020 (FOR ASYNCHRONOUS LINE CARDS)
; 5
; 4
13
i 2 i 1
RING CLEAR TO CLEAR
SCAN TRANSITION SEND TRANS
CARR IE R SECONDARY
RECE IVE
TRANSITION
10
09 08
MAINTENANCE
MODE
CLEAR
MUX
STEP
07 06 05
DONE
SCAN
ENABLE
INTERRUPT
ENABLE
04
BUSY
Figure 3-3 DVll Primary Registers (Sheet 2 of 3)
3-10
03
02 01
LINE
NUMBER
00
R
I
I
11-2690
00
11-2691
11-2692
00
11-4408