hi-6131pqtf QuickLogic Corp, hi-6131pqtf Datasheet - Page 187

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

locations. Refer to data sheet section entitled “Mode Command Action Summary”.
Here is an example data structure for a receive mode command with data (mode code values 0x10 through 0x1F).
Notice that the Data Pointer points to the data structure starting address, not the mode data word. The data pointer is
located in the receive mode command’s Descriptor Block, fully described later:
Three receive mode commands with data are not defined under MIL-STD-1553B. These are MC16, MC18 and MC19
(mode codes 0x10, 0x12 and 0x13 respectively). However the device responds “in form” if illegal command detection
is not used (corresponding bits in Illegalization Table are logic 0) and the UMCINV bit in Configuration Register 1 is
logic 0.
For mode code commands without data, the data structure contains only the Message Information Word and Time-Tag
Word.
Here is an example data structure for a receive mode command without data (mode code values 0x00 through 0x0F).
Note: None of these receive mode commands are defined under MIL-STD-1553B but the device responds “in form”
if illegal command detection is not used (corresponding bits in Illegalization Table are logic 0) and the UMCINV bit in
Configuration Register 1 is logic 0. Notice that the data pointer points to the data structure starting address, the mes-
sage information word. The data pointer is located in the receive mode command’s Descriptor Block, fully described
later:
The following bits comprise the receive mode Message Information Word:
Data pointer equals 0x0500 → 0x0500
Data pointer equals 0x0500 → 0x0500
MSB
Bit No.
15
14
13
15 14 13 12 11 10 9
X
Mnemonic
-----
IWDERR
GAPERR
Function
Not Used.
Invalid Word Error.
Assertion of this bit indicates Manchester error or parity error was observed in a received
data word.
Gap Error.
Assertion of this bit indicates bus activity was detected immediately after a received mode
data word or that a gap occurred before the data word was received.
8
Hex Address
Hex Address
Data Buffer
Data Buffer
X
7
0x0501
0x0502
0x0501
X
6
5
HOLT INTEGRATED CIRCUITS
4
HI-6130, HI-6131
3
Word Description
Message Information Word
Time-Tag Word
Mode Data Word
Word Description
Message Information Word
Time-Tag Word
2
1
0
187
LSB
Word is Written By ...
Device, after message completion
Word is Written By ...
Device, after message completion
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