Zilog Z80195 - Manual (Page 40)

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Z80185/195 D EVELOPMENT K IT
U SER ' S M ANUAL
UM951800100
Z ILOG
Serial Interface Jumper Settings (Continued)
ASCI0 Signals
Pin
Jumper Numbers Description
J7 4–5 To use ASCI0 CKA0 as an input from J12 or J13.
J7 5–6 To use ASCI0 CKA0 as an output on J12 or J13.
Modem Control Signals
J14 allows jumpering between modem control inputs and outputs for J10-13 as shown below.
Pin
Jumper Numbers Description
J14 8 “DSR” input from J10 or “DTR” input from J11.
J14 10 “DCD” output to J11.
J14 12 “DTR” output to J12 or “DCR” output to J13.
J14 14 “DSR” input from J12 or “DTR” input from J13. J14-16 is
“DCD” output to J13.