
9
Data Device Corporation
www.ddc-web.com
BU-6174X/6184X/6186X
Rev. C
END OF MESSAGE
0(LSB)
BC STATUS SET / RT MODE CODE /
MT PATTERN TRIGGER
1
FORMAT ERROR
2
MT COMMAND STACK ROLLOVER
BC END OF FRAME
3
BC CONTROL WORD/RT SUBADDRESS CONTROL WORD EOM
4
RT CIRCULAR BUFFER ROLLOVER
5
TIME TAG ROLLOVER
6
RT ADDRESS PARITY ERROR
7
BC RETRY
8
HANDSHAKE FAIL
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 11. INTERRUPT STATUS REGISTER #1
(READ 06H)
ENHANCED MODE CODE HANDLING
0(LSB)
1553A MODE CODES ENABLE
1
RTFAIL / RTFLAG WRAP ENABLE
2
MT COMMAND STACK SIZE 0
BUSY RX TRANSFER DISABLE
3
ILLEGAL RX TRANSFER DISABLE
4
ALTERNATE STATUS WORD ENABLE
5
OVERRIDE MODE T/R ERROR
6
ILLEGALIZATION DISABLED
7
MT DATA STACK SIZE 0
8
MT DATA STACK SIZE 1
9
MT DATA STACK SIZE 2
10
MT COMMAND STACK SIZE 1
12
BC/RT COMMAND STACK SIZE 0
13
BC/RT COMMAND STACK SIZE 1
14
ENHANCED MODE ENABLE
15(MSB)
DESCRIPTION
BIT
11
TABLE 12. CONFIGURATION REGISTER #3
(READ/WRITE 07H)
RT ADDRESS PARITY
0(LSB)
RT ADDRESS 0
1
RT ADDRESS 1
2
EXPANDED CROSSING ENABLED
RT ADDRESS 2
3
RT ADDRESS 3
4
RT ADDRESS 4
5
RT ADDRESS LATCH/TRANSPARENT
6
BROADCAST DISABLED
7
GAP CHECK ENABLED
8
RESPONSE TIMEOUT SELECT 0
9
RESPONSE TIMEOUT SELECT 1
10
EXTERNAL TX INHIBIT B
12
EXTERNAL TX INHIBIT A
13
SINGLE-ENDED SELECT
14
12 / 16 MHZ CLOCK SELECT
15(MSB)
DESCRIPTION
BIT
11
TABLE 14. CONFIGURATION REGISTER #5
(READ/WRITE 09H)
RT / MONITOR DATA STACK ADDRESS 0
0(LSB)
RT / MONITOR DATA STACK ADDRESS 15
15(MSB)
DESCRIPTION
BIT
TABLE 15. RT / MONITOR DATA STACK ADDRESS
REGISTER
(READ/WRITE 0AH)
TEST MODE 0
0(LSB)
TEST MODE 1
1
TEST MODE 2
2
BROADCAST MASK ENA/XOR
LATCH RT ADDRESS WITH CONFIG #5
3
MT TAG GAP OPTION
4
VALID BUSY/NO DATA
5
VALID M.E./NO DATA
6
2ND RETRY ALT/SAME BUS
7
1ST RETRY ALT/SAME BUS
8
RETRY IF STATUS SET
9
RETRY IF -A AND M.E.
10
EXPANDED BC CONTROL WORD ENABLE
12
MODE COMMAND OVERRIDE BUSY
13
INHIBIT BIT WORD IF BUSY
14
EXTERNAL BIT WORD ENABLE
15(MSB)
DESCRIPTION
BIT
11
(READ/WRITE 08H)