Zilog Z80230 - Manual (Page 77)

SCC/ESCC
User Manual
UM010903-0515 Interfacing the SCC/ESCC
70
but both the /CTS pin and /DCD pin are ignored as auto enables. This should not be considered a
normal operating mode ( Figure ).
Local Loopback
Auto Echo
Transmitter
Receiver Receiver
RxD
/DCD
/CTS
TxD
Tx Enable
Rx Enable
Local Loop Back
NC
Transmitter
Receiver RxD
/DCD
/CTS
TxD
Tx Enable
Rx Enable
Auto Echo
NC