HI-6120 HOLTIC [Holt Integrated Circuits], HI-6120 Datasheet - Page 93

• Manufacturer Part Number: HI-6120
• Description: MIL-STD-1553 Remote Terminal ICs
• Manufacturer: HOLTIC [Holt Integrated Circuits]

Segregated storage for data and message information simplifies host loading / offloading of buffered data.
Descriptor MIB Address tracks number of messages. Full count occurs when N initialized 0-bits become N 1-bits.
When full number of messages in block is transacted, an optional interrupt is generated to notify host.
Message Info Buffer
Message Info Word
Message Info Word
Message Info Word
Time-Tag Word
Time-Tag Word
Time-Tag Word
Subaddress
Assigned
(MIB)
Last Message
in Data Block
Current
Message
FirstMessage
in Data Block
Figure 16. Illustration of Circular Buffer Mode 2
Memory Address for the Applicable
Subaddress Block is Derived From
the Decoded Command Word
HOLT INTEGRATED CIRCUITS
Descriptor Block
Current Address
HI-6120, HI-6121
for Subaddress
Start Address
Control Word
MIB Address
Increasing
Memory
Address
93
Last Message
in Data Block
FirstMessage
in Data Block
Current
Message
Circular Data
Data Word(s)
Data Word(s)
Data Word(s)
Subaddress
Data Word N
Data Word N
Data Word N
Data Word 1
Data Word 1
Data Word 1
Assigned
Buffer
Current
Address
Start
Address