ACT7006 datasheet(21/29 Pages) AEROFLEX

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SCD7005 REV B 8/2/01

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ENABLE

Enable. When held low, enables Bit Decode, Next Status, and

Status Update program lines.

INT #l

Good Block (RT) / VALID TRANSFER (BC)

INT #2

VALID Transmit (RT) / INVALID TRANSFER (BC)

LTFAIL

Loop Test Fail. This line goes low if any error in the terminals

own transmitted waveform is detected or if any parity error in the

hardwired RT address is detected.

3MEREQ

Message Error Request. To set the Message Error bit in the

Status Word, this signal must go low within 650 nsec of INCMD

going low and remain valid for the DURATION of INCMD.

MODEREST

Mode Reset. This line pulses low for 500 ns on completion of

the servicing of a valid Reset Remote Terminal Mode

Command.

M16/8

Programs Interface for 8 Bit or 16 Bit Data Buses.

16/8 = LOW (0) 8 BIT MODE

16/8 = HIGH (1) 16 BIT MODE

NBGT

New Bus Grant. Pulses low whenever a new command is

accepted.

NEXT STATUS

Next Status. When held low, causes TF or SSF to appear in very

next Status Word after fault occurrence (except for Transmit

Status or Transmit Last Command).

PASS

Pass. Interrupt indicates that the protocol self-test has

completed with no faults.

Read Strobe. Must GO LOW together with DS to perform a

READ OPERATION. Note: WT STROBE MUST BE HIGH.

RETRY

Retry Interrupt

RESET

System MASTER Reset. When low resets all registers and

INPUT/OUTPUT FIFO buffers. Minimum Low Time for reset 0.5

µsec.

RTADPAR

RT Address Parity. This must be hardwired by the user to give

odd parity.

RTAD0

RT Address Lines. These should be hardwired

by the user. RTAD4 is the most significant bit.

RTAD1

RTAD2

RTAD3

RTAD4

Pin #

Signal Name

Signal Description

Table 11 – Pin Number Description (continued)

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