Lucent Technologies MN10285K - Manual (Page 272)

I/O Ports
I/O Port Circuit Diagrams
MN102H75K/F75K/85K/F85K LSI User Manual Panasonic Semiconductor Development Company
271
Panasonic
Figure 11-21 P47/HSYNC (Port 4)
P4PUP7
0: Pullup off
1: Pullup on
P4MD7
0: P47
1: HSYNC
P4DIR7
0: Port input
1: Port output
P4OUT7
Pin
0: Port low output
1: Port high output
P4IN7
Schmidt trigger
HSYNC
P47/HSYNC