Aeroflex Circuit Technology

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

13

1553B

BUS "B"

1553B

BUS "A"

ACT4453

Driver/

Receiver 1

ACT4453

Driver/

Receiver 0

TX DATA OUT

RX DATA IN

TX DATA OUT

RX DATA IN

XFR0

XFR1

+

+

TX DATA OUT

RX DATA IN

TX DATA OUT

RX DATA IN

RX DATA OUT

TX DATA IN

TX DATA IN

RX DATA OUT

RX DATA OUT

TX DATA IN

TX DATA IN

RX DATA OUT

TX INHIBIT "1"

CT1999

PDIN "0"

NDIN "0"

TX DATA

TX DATA

PDIN "1"

NDIN "1"

TX INHIBIT "0"

TX INHIBIT "1"

TX INHIBIT "0"

Figure 5 – Example of an Interface between the CT1999 and Driver/Receiver

1MHz

NRZ

Manchester

Figure 4 – Data Encoding

Data

Bi-Phase

Clock

(+) -

(0) -

(+) -

(0) -

(+) -

(0) -

(-) -

One Bit Time