hi-6131pqtf QuickLogic Corp, hi-6131pqtf Datasheet - Page 62

• Manufacturer Part Number: hi-6131pqtf
• Description: Mil-std-1553 / Mil-std-1760 3.3v Bc / Mt / Rt Multi-terminal Device
• Manufacturer: QuickLogic Corp

10.4.1. BC Control Word
The BC Control Word is the first word in each Message Control / Status Block. The BC Control Word is not transmitted
on the MIL-STD-1553 bus. This word is initialized and maintained by the host to specify message attributes: message
format, which bus to use, bit masks for the received RT Status Word, enabling interrupt at end-of-message, and
enabling self test:
15 14 13 12 11 10
0
Control / Status Block
Bus Controller Configured for 16-Bit Time Base
Data Block Pointer
Block Status Word
for all messages
except RT-to-RT
0
Time to Next Msg
BC Control Word
Command Word
RT Status Word
Loopback Word
Time Tag Word
0
Message
Figure 5. Structure of Bus Controller Message Control / Status Blocks in RAM
0
0
0
0
9
0
8
RW
7
0
Control / Status Block
6 Unused Addresses
Rx Command Word
Rx RT Status Word
Tx Command Word
Tx RT Status Word
Data Block Pointer
Block Status Word
0
6
Time to Next Msg
BC Control Word
messages only
Loopback Word
Time Tag Word
for RT-to-RT
0
5
Message
4
0
0
3
HOLT INTEGRATED CIRCUITS
0
2
HI-6130, HI-6131
0
1
0
0
MR Reset
Host Access
Bit
62
Bus Controller Configured for 32-Bit Time Base
Control / Status Block
High Time Tag Word
Low Time Tag Word
Data Block Pointer
Block Status Word
for all messages
Time to Next Msg
except RT-to-RT
BC Control Word
Command Word
RT Status Word
Increasing
Message
Memory
Address
Control / Status Block
6 Unused Addresses
High Time Tag Word
Rx Command Word
Rx RT Status Word
Tx Command Word
Tx RT Status Word
Data Block Pointer
Block Status Word
Time to Next Msg
BC Control Word
messages only
Time Tag Word
for RT-to-RT
Message