
9
Data Device Corporation
www.ddc-web.com
BU-65528 and BU-65527
F1 web-10/02-0
BCST: MEMORY MANAGEMENT 0 (MM0)
0(LSB)
BCST: MEMORY MANAGEMENT 1 (MM1)
1
BCST:MEMORY MANAGEMENT 2 (MM2)
2
TX: MEMORY MANAGEMENT 1 (MM1)
BCST: CIRC BUF INT
3
BCST: EOM INT
4
RX: MEMORY MANAGEMENT 0 (MM0)
5
RX: MEMORY MANAGEMENT 1 (MM1)
6
RX: MEMORY MANAGEMENT 2 (MM2)
7
RX: CIRC BUF INT
8
RX: EOM INT
9
TX: MEMORY MANAGEMENT 0 (MM0)
10
TX: MEMORY MANAGEMENT 2 (MM2)
12
TX: CIRC BUF INT
13
TX: EOM INT
14
RX: DOUBLE BUFFER ENABLE
15(MSB)
DESCRIPTION
BIT
11
TABLE 17. RT SUBADDRESS CONTROL WORD REGISTER
(READ/WRITE 18H)
TIME TAG 0
0(LSB)
TIME TAG 15
15(MSB)
DESCRIPTION
BIT
TABLE 18. TIME TAG REGISTER (READ/WRITE 1AH)
END OF MESSAGE
0(LSB)
STATUS SET
1
FORMAT ERROR
2
MT COMMAND STACK ROLLOVER
BC END OF FRAME
3
RT SUBADDRESS CONTROL WORD EOM
4
RT CIRCULAR BUFFER ROLLOVER
5
TIME TAG ROLLOVER
6
RT ADDRESS PARITY ERROR
7
BC RETRY
8
RT MODE/MT PATTERN TRIGGER
9
MT DATA STACK ROLLOVER
10
BC/RT COMMAND STACK ROLLOVER
12
TRANSMITTER TIMEOUT
13
RAM PARITY ERROR
14
MASTER INTERRUPT
15(MSB)
DESCRIPTION
BIT
11
TABLE 19. INTERRUPT STATUS REGISTER (READ/WRITE 1CH)
TABLE 16. BC CONTROL WORD REGISTER (READ/WRITE 18H)
11
BIT
DESCRIPTION
15(MSB) RESERVED
14
M.E. MASK
13
SERVICE REQUEST BIT MASK
12
SUBSYS BUSY BIT MASK
10
TERMINAL FLAG BIT MASK
9
RESERVED BITS MASK
8
RETRY ENABLED
7
BUS CHANNEL A/B
6
OFF LINE SELF TEST
5
MASK BROADCAST BIT
4
EOM INTERRUPT ENABLE
3
1553A/B SELECT
SUBSYS FLAG BIT MASK
2
MODE CODE FORMAT
1
BROADCAST FORMAT
0(LSB)
RT-RT FORMAT
TABLE 20. CONFIGURATION REGISTER #3 (READ/WRITE 1EH)
11
BIT
DESCRIPTION
15(MSB) ENHANCED MODE ENABLE
14
BC/RT COMMAND STACK SIZE 1
13
BC/RT COMMAND STACK SIZE 0
12
MT COMMAND STACK SIZE 1
10
MT DATA STACK SIZE 2
9
MT DATA STACK SIZE 1
8
MT DATA STACK SIZE 0
7
ILLEGALIZATION DISABLED
6
OVERRIDE MODE T/R* ERROR
5
ALTERNATE STATUS WORD ENABLE
4
ILLEGAL RX TRANSFER DISABLE
3
BUSY RX TRANSFER DISABLE
MT COMMAND STACK SIZE 0
2
RTFAIL-FLAG WRAP ENABLE
1
1553A MODE CODES ENABLE
0(LSB)
ENHANCED MODE CODE HANDLING
TABLE 21. CONFIGURATION REGISTER #4 (READ/WRITE 20H)
11
BIT
DESCRIPTION
15(MSB) EXTERNAL BIT WORD ENABLE
14
INHIBIT BIT WORD IF BUSY
13
MODE COMMAND OVERRIDE BUSY
12
EXPANDED BC CONTROL WORD ENABLE
10
RETRY IF -A AND M.E.
9
RETRY IF STATUS SET
8
1ST RETRY ALT/SAME BUS
7
2ND RETRY ALT/SAME BUS
6
VALID M.E./NO DATA
5
VALID BUSY/NO DATA
4
MT TAG GAP OPTION
3
LATCH RT ADDRESS WITH CONFIG #5
BROADCAST MASK ENABLE/XOR
2
TEST MODE 2
1
TEST MODE 1
0(LSB)
TEST MODE 0