59629475809QXC View Datasheet(PDF) - Aeroflex UTMC

Part Name

Description

Manufacturer

59629475809QXC

Enhanced SuMMIT XTE MIL-STD-1553 dual redundant bus controller/remote terminal/monitor/transceiver multichip module SMD. Lead finish gold. Class Q. Device type 09 (SuMMIT XTE 5V/12V). Radiation none.

Aeroflex UTMC 

2.2.2 Transmit Control Word

The following bits describe the transmit subaddress Descriptor Control Word. Information contained in this word assists the SRT

in message processing. The Descriptor Control Word is initialized by the host or subsystem and updated by the SRT during command

post-processing.

Bit

Number

Mnemonic

Description

15-7

N/A

Not Applicable.

6

IWA

Interrupt When Accessed. Assertion of this bit enables the generation of an interrupt when

the subaddress receives a valid command. The interrupt is entered into the Pending

Interrupt Register if not masked in the Mask Register. Output pin MSG_INT asserts after

message processing.

5

N/A

Not Applicable.

4

BAC

Block Accessed. The subsystem or host initializes this bit to zero, the SRT overwrites the

zero with a logic one upon completion of message processing. After interrogation, the

host should reset this bit to zero to observe further accesses.

3

N/A

Not Applicable.

2

A/B

Buffer A/B. Indicates the data pointer to access when buffer ping-pong is enabled. During

initialization, the host designates the first buffer used by asserting or negating this bit. A

logic one indicates buffer A; a logic zero indicates buffer B. This bit is a “don’t care” if

buffer ping-ponging is not enabled.

1

BRD

Broadcast Received. Assertion of this bit indicates the reception of a broadcast command.

0

N/A

Not Applicable.

22

SµMMIT FAMILY

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