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8
Data Device Corporation
www.ddc-web.com
BU-65528 and BU-65527
F1 web-10/02-0
TABLE 15. BC/RT COMMAND STACK POINTER REG. (READ 16H)
BIT
DESCRIPTION
15(MSB) COMMAND STACK POINTER 15
0(LSB)
COMMAND STACK POINTER 0
TABLE 14. START/RESET REGISTER (WRITE 16H)
BIT
DESCRIPTION
15(MSB) RESERVED
7
RESERVED
6
BC/MT STOP-ON-MESSAGE
5
BC STOP-ON-FRAME
4
TIME TAG TEST CLOCK
3
TIME TAG RESET
2
INTERRUPT RESET
1
BC/MT START
0(LSB)
RESET
TABLE 13. CONFIGURATION REGISTER #2 (READ/WRITE 14h)
BIT
DESCRIPTION
15(MSB)
ENHANCED INTERRUPTS
14
RAM PARITY ENABLE
13
BUSY LOOKUP TABLE ENABLE
12
RX SA DOUBLE BUFFER ENABLE
11
OVERWRITE INVALID DATA
10
256-WORD BOUNDARY DISABLE
9
TIME TAG RESOLUTION 2(TTR2)
8
TIME TAG RESOLUTION 1 (TTR1)
7
TIME TAG RESOLUTION 0 (TTR0)
6
CLEAR TIME TAG ON SYNCHRONIZE
5
LOAD TIME TAG ON SYNCHRONIZE
4
INTERRUPT STATUS AUTO CLEAR
3
LEVEL/PULSE INTERRUPT REQUEST
2
CLEAR SERVICE REQUEST
1
ENHANCED RT MEMORY MANAGEMENT
0(LSB)
SEPARATE BROADCAST DATA
TABLE 12. CONFIGURATION REGISTER #1 (READ/WRITE 12H)
BIT
BC FUNCTION (Bits
11-0 Enhanced Mode Only)
RT WITHOUT ALTERNATE
STATUS
RT WITH ALTERNATE
STATUS (Enhanced Only)
MONITOR FUNCTION
(Enhanced mode only bits 12-0)
15 (MSB)
RT/BC-MT (logic 0)
(logic 1)
(logic 0)
14
MT/BC-RT (logic 0)
(logic 0)
(logic 1)
13
CURRENT AREA B/A
12
MESSAGE STOP-ON-ERROR
MESSAGE MONITOR
ENABLED (MMT)
MESSAGE MONITOR
ENABLED (MMT)
MESSAGE MONITOR ENABLED
(MMT)
11
FRAME STOP-ON-ERROR
DYNAMIC BUS CONTROL
S10
TRIGGER ENABLED WORD
10
STATUS SET STOP-ON-MESSAGE
BUSY
S09
START-ON-TRIGGER
9
STATUS SET STOP-ON-FRAME
SERVICE REQUEST
S08
STOP-ON-TRIGGER
8
FRAME AUTO-REPEAT
SUBSYSTEM FLAG
S07
NOT USED
7
EXTERNAL TRIGGER ENABLED RTFLAG (Enhanced Mode Only)
S06
EXTERNAL TRIGGER ENABLED
6
INTERNAL TRIGGER ENABLED
NOT USED
S05
NOT USED
5
INTERMESSAGE GAP TIMER
ENABLED
NOT USED
S04
NOT USED
4
RETRY ENABLED
NOT USED
S03
NOT USED
3
DOUBLED/SINGLE RETRY
NOT USED
S02
NOT USED
2
BC ENABLED (Read Only)
NOT USED
S01
MONITOR ENABLED(Read Only)
1
BC FRAME IN PROGRESS
(Read Only)
NOT USED
S00
MONITOR TRIGGERED
(Read Only)
0 (LSB)
BC MESSAGE IN PROGRESS
(Read Only)
RT MESSAGE IN PROGRESS
(Enhanced mode only, Read Only)
RT MESSAGE IN PROGRESS
(Read Only)
MONITOR ACTIVE
(Read Only)