hi-1575pqt Holt Integrated Circuits, Inc., hi-1575pqt Datasheet - Page 5

• Manufacturer Part Number: hi-1575pqt
• Description: Mil-std-1553 3.3v Dual Transceivers With Integrated Encoder / Decoders
• Manufacturer: Holt Integrated Circuits, Inc.

BUSA (B)
D15 - D0
CHA/CHB
CHA/CHB
BUSA (B)
RCVA (B)
D15 - D0
SYNC
STRB
SYNC
REG
STRB
R/W
REG
R/W
Write TX,
(MIL-STD-1553 Status word)
SYNC
CHAN OR
TXDATA
VALID
SYNC
X
0
1
SYNC
15
CHA
DON’T CARE
DON’T CARE
DON’T CARE
/CHB
14
FIGURE 3. EXAMPLE TRANSMIT OPERATION
HOLT INTEGRATED CIRCUITS
DON’T CARE
DON’T CARE
DON’T CARE
DON’T CARE
DON’T CARE
SYNC
FIGURE 5. HI-1575 REGISTER MAP
FIGURE 4. EXAMPLE RECEIVE OPERATION
13
REG
15
12
0
0
1
HI-1575
14
Read SAM,
check SENDDATA=1
5
Register
Receiver A Data (RXA)
Receiver B Data (RXB)
Status & Mode Register (SAM)
13
2
1
Write TX,
(MIL-STD-1553 Data word)
3
Read SAM
SAM
0
3
P
TXDATA
2
Read RXA or RXB,
(MIL-STD-1553 Data word)
VALID
SYNC
1
SYNC
SAM
0
P
15
SYNC
14
VALID
RXA (B)
SYNC
13
SYNC
12
15