Panasonic F77G User Manual page 391

12-2-2 Data Register
Serial interface 3 has a 8-bit serial data register.
Serial Interface 3 Transmit / Receive Shift Register (SC3TRB)
7
SC3TRB
SC3TRB7
Figure 12-2-1 Serial Interface 3 Transmit/Receive Shift Register (SC3TRB : x'03FAB', R/W)
6 5 4
SC3TRB6 SC3TRB5 SC3TRB4 SC3TRB3
14
3 2 1 0
SC3TRB2 SC3TRB1 SC3TRB0
Chapter 12 Serial Interface 3
(At reset: X X X X X X X X )
Control Registers
1 4
XII - 5