hi-6131pqtf QuickLogic Corp, hi-6131pqtf Datasheet - Page 143

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

Bit No.
10
11
9
8
Mnemonic
BCSTINV
DBCENA
UMCINV
NOTICE2
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
HOLT INTEGRATED CIRCUITS
Function
Broadcast Commands Invalid.
If this bit is high, commands addressed to RT address 31 are treated
as invalid: There is no terminal recognition of commands to RT address
31; there is no RT command response, and no status updating for the
benefit of following “transmit status” or “transmit last command” mode
commands. If this bit is low, commands addressed to RT address 31 are
treated as valid broadcast commands.
Dynamic Bus Control Enable.
When this bit is logic 1, this RT accepts bus control after receiving a
valid legal “dynamic bus control” mode command. The RT STEX bit
in the Master Configuration Register resets to 0 and the BCSTRT bit
in the Master Configuration Register is set to logic 1. If dynamic bus
control is allowed, the BCENA input pin and register bit in the Master
Configuration Register must both be logic 1, and the bus controller
should be fully initialized in advance to permit immediate operation.
When this bit is logic 0, the host must perform all actions necessary to
change from RT to Bus Controller mode. Typically the RT Descriptor
Table is configured to generate an IWA interrupt to alert the host upon
receiving a valid legal Dynamic Bus Control mode code command, MC0.
Undefined Mode Codes Invalid.
This bit determines whether the RT treats undefined mode code
commands as valid (default) or invalid commands. This bit applies only
to the following undefined mode code commands:
If this bit is low (default state after nMR pin reset) undefined mode
code commands are considered valid, and RT response is based on
individual mode command settings in the Illegalization Table: If mode
command is legal, the RT “responds in form” and updates status. If a
mode command is illegal, the RT asserts Message Error status and (if
non-broadcast) transmits only its Status Word without associated data
word.
If this bit is high, undefined mode code commands are treated as invalid:
There is no RT recognition of an invalid command, no RT command
response, and no status updating for the benefit of following “transmit
status” or “transmit last command” mode commands.
Notice 2 Broadcast Data Storage.
If this bit is high, the terminal stores data associated with broadcast
commands separately from data associated with non-broadcast
commands to meet the requirements of MIL-STD-1553B Notice 2. If this
bit is low, broadcast command data is stored in the same buffer with
data from non-broadcast commands.
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•
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HI-6130, HI-6131
Mode Codes 0 through 15 with T/R bit = 0
Mode Codes16, 18 and19 with T/R bit = 0
Mode Codes 17, 20 and 21 with T/R bit = 1
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