HI-6120 HOLTIC [Holt Integrated Circuits], HI-6120 Datasheet - Page 84

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

Upon successful message completion, if non-zero the INDX count in Descriptor Word 3 is decremented.
Message Info Word
Memory Address for the Applicable
Subaddress Block is Derived From
Time-Tag Word
for Broadcast
Data Word(s)
If decremented result is non-zero, Data Pointer A is adjusted so next message is stored above
Buffer Space
Data Word N
Subaddress
Data Word 1
the Decoded Command Word
(optional)
just-completed message. If decremented INDX is zero, Data Pointer A remains static
and IXEQZ interrupt occurs if enabled in Control Word.
Figure 12. Illustration of Indexed Buffer Mode
Broadcast
Message
(if NOTICE2
is asserted)
HOLT INTEGRATED CIRCUITS
HI-6120, HI-6121
B’cast Data Pointer
Descriptor Block
INDX Index Count
for Subaddress
Data Pointer A
Control Word
Increasing
Memory
Address
84
Preceding
Message
Message
Message
Current
Next
Message Info Word
Message Info Word
Message Info Word
Time-Tag Word
Time-Tag Word
Time-Tag Word
Data Word(s)
Data Word(s)
Data Word(s)
Buffer Space
Subaddress
Data Word N
Data Word N
Data Word N
Data Word 1
Data Word 1
Data Word 1
Assigned