Oki MSM85C154HVS - Page 114

INTERNAL SPECIFICATIONS
107
SBUF (R)
INPUT SHIFT REG.
INTERNAL BUS
RI
SBUF (T)
START
START
INTERNAL BUS
TI
REN
SHIFT
CLOCK
ENABLE
TXD
RXD
WRITE
TO SBUF
SERIAL PORT
INTERRUPT
Figure 4-28 Serial port (mode 0)