TABLE 14. CONFIGURATION REGISTER #4 (READ/WRITE1 0H)
TABLE 12. INTERRUPT STATUS REGISTER (READ/WRITE 0CH)
BIT DESCRIPTION
15 (MSB) MASTER INTERRUPT
BIT
DESCRIPTION
15 (MSB) EXTERNAL BIT WORD ENABLE
14
13
12
11
10
9
INHIBIT BIT WORD IF BUSY
MODE COMMAND OVERRIDE BUSY
EXPANDED BC CONTROL WORD ENABLE
BROADCAST MASK ENABLE/XOR
RETRY IF -A AND M.E.
14
13
12
11
10
9
RAM PARITY ERROR
TRANSMITTER TIMEOUT
BC/RT COMMAND STACK ROLLOVER
MT COMMAND STACK ROLLOVER
MT DATA STACK ROLLOVER
RT MODE/MT PATTERN TRIGGER
BC RETRY
RETRY IF STATUS SET
8
1ST RETRY ALT/SAME BUS
2ND RETRY ALT/SAME BUS
VALID M.E./NO DATA
8
7
7
RT ADDRESS PARITY ERROR
TIME TAG ROLLOVER
6
6
5
VALID BUSY/NO DATA
5
RT CIRCULAR BUFFER ROLLOVER
RT SUBADDRESS CONTROL WORD EOM
BC END OF FRAME
4
MT TAG GAP OPTION
4
3
LATCH RT ADDRESS WITH CONFIG #5
TEST MODE 2
3
2
2
FORMAT ERROR
1
TEST MODE 1
1
STATUS SET
0 (LSB) TEST MODE 0
0 (LSB) END OF MESSAGE
TABLE 15. CONFIGURATION REGISTER #5 (READ/WRITE 12H)
TABLE 13. CONFIGURATION REGISTER #3 (READ/WRITE 0EH)
BIT
DESCRIPTION
BIT
DESCRIPTION
15 (MSB) 12MHZ CLOCK SELECT
15 (MSB) ENHANCED MODE ENABLE
14
13
12
11
10
9
LOGIC “0”
14
13
12
11
10
9
BC/RT COMMAND STACK SIZE 1
BC/RT COMMAND STACK SIZE 0
MT COMMAND STACK SIZE 1
MT COMMAND STACK SIZE 0
MT DATA STACk SIZE 2
EXTERNAL TX INHIBIT A, read only BU-65170/61580X6
EXTERNAL TX INHIBIT B, read only BU-65170/61580X6
EXPANDED CROSSING ENABLED
RESPONSE TIMEOUT SELECT 1
RESPONSE TIMEOUT SELECT 0
GAP CHECK ENABLED
BROADCAST DISABLED
LOGIC “1”
MT DATA STACk SIZE 1
8
8
MT DATA STACk SIZE 0
7
7
ILLEGALIZATION DISABLED
OVERRIDE MODE T/R ERROR
ALTERNATE STATUS WORD ENABLE
ILLEGAL RX TRANSFER DISABLE
BUSY RX TRANSFER DISABLE
RAFT-FLAG WRAP ENABLE
1553A MODE CODES ENABLE
6
6
5
RT ADDRESS 4
5
4
RT ADDRESS 3
4
3
RT ADDRESS 2
3
2
RT ADDRESS 1
2
1
RT ADDRESS 0
1
0 (LSB) RT ADDRESS PARITY
0 (LSB) ENHANCED MODE CODE HANDLING
12
ETC [ ETC ]
