CT1999 データシートの表示（PDF） - Aeroflex Corporation

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CT1999

CT1999 Remote Terminal and/or Bus Controller

Aeroflex Corporation 

Signal

BUF INH

IH ENA

IH DIR

RX DATA 0/1

RX DATA 0/1

TX INHIBIT 0/1

TX DATA

Pin Description (Cont.)

Hybrid

Sink or Source

Signal Description

SINK

SINK

SINK

SINK

SINK

SOURCE

SOURCE

Buffer Inhibit - A low on this line causes the Buffered Signals to assume a

high impedance state.

Internal Highway Enable - A low on this line enables the Internal Highway

transceiver to transmit or receive data which is controlled by the IH DIR Line.

Internal Highway Direction - Controls the direction of data through the

Internal Highway Transceiver.

High = To Subsystem

Low = From Subsystem

Positive Date In. This should be a TTL description of the positive, half of the

Manchester code data on the bus. It should be driven to a logic level “1” when

a predetermined positive threshold is exceeded on the bus.

Negative Data In. This should be a TTL description of the negative half of the

Manchester code data on the bus. It should be driven to a logic level “1” when

a predetermined negative threshold is exceeded on the bus.

Transmitter Enable. Goes low when the transmitter is transmitting. Should be

used to enable the bus drivers.

Positive Data Out - When this signal goes high the bus should be driven

positive.

Aeroflex Circuit Technology

10

SCDCT1999 REV B 8/14/01 Plainview NY (516) 694-6700

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