MAH3691NL View Datasheet(PDF) - Dynex Semiconductor

Part Name

Description

Manufacturer

MAH3691NL

1553B Bus Controller/Remote Terminal

Dynex Semiconductor 

MA3690/1/3

NDOUT0N Output

Negative Manchester data for driver on bus 0.

PDIN1

Input

Positive threshold exceeded on bus 1.

NDIN1

Input

Negative threshold exceeded on bus 1.

TXEN1N Output

Transmit enable for driver on bus 1.

PDOUT1N Output

Positive Manchester data for driver on bus 1.

NDOUT1N Output

Negative Manchester data for driver on bus 1.

SUBSYSTEM INTERFACE LINES

STROBEN Output

STROBE - Information transfer strobe pulse for words being

transferred on the data highway.

BUFENN Output

BUFFER ENABLE - This line goes low to enable the data

highway buffer between the terminal and the subsystem.

R/WN

Output

READ/WRITE - This line indicates the direction of information

transfer between the terminal and the subsystem. When low,

information is being written from the terminal to the

subsystem.

DTRQN

Output

DATA TRANSFER REQUEST - This line goes low to request

permission to transfer a non mode data word to or from the

subsystem.

DTAKN

Input

DATA TRANSFER ACKNOWLEDGE - This line should be

driven low to grant permission to perform the requested data

word transfer.

MDTN

Output

MODE DATA TRANSFER -

RT: This line goes low to indicate that the data word being

transferred is assosiated with a mode command.

BC: When operating as a passive monitor this line goes low

to indicate that a valid data word is on the data highway and

should be written into the received data latch.

GBRN

Output

GOOD BLOCK RECEIVED - When in RT mode this line will

pulse low to inform the subsystem that the received non

mode data words are valid and may be used.

ADENN

Output

ADDRESS ENABLE - When in RT mode this line will go low

as part of the reset routine to enable the terminal address on

to the data highway.

SYNCN

Output

SYNCHRONISE - This line will pulse low if a valid

synchronise mode command without data is received and

passes all validity checks.

STATENN Output

STATUS ENABLE -

RT: When low this line enables the contents of the

subsystem status latch on to the data highway.

BC: When low this line enables the BC report word on to the

data highway.

MDRN

Output

MODE DATA RECEIVED - This line will pulse low to

inform the subsystem that the received mode data is

valid and may be used.

RXCMDN Output

RECEIVED COMMAND -

RT: This line goes low to indicate that a valid command word

for this RT is on the highway and should be written into the

command word latch.

BC: When operating as a passive monitor this line goes low

to indicate that a valid command / status word is on the data

highway and should be written into the received status latch.

BUSYREQN / HALTREQN Input

BUSY REQUEST / HALT REQUEST -

RT: This line should be driven low as a request for the

terminal to set the busy bit and inhibit non mode data

transfers to or from the subsystem.

BC: This line should be driven low as a request for the

terminal to halt table execution and all subsystem access.

BUSYACKN / HALTEDN Output

BUSY ACKNOWLEDGE / HALTED -

RT: This line will go low to indicate that the subsystem has

free access to the shared store.

BC: This line will go low to indicate that all terminal operation

has been halted and hence the subsystem has free access to

the shared store.

CODENN Output

CODE ENABLE - This line when low indicates that a

word transfer between the terminal and either the

Instruction Store or the Report Store is taking place.

C0

Output

CODE 0 - This line is the least significant address line from

the terminal to the Instruction and Report Stores.

C1

Output

CODE 1 - This line is the least significant but one address

line from the terminal to the Instruction and Report Stores.

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