Figure 18.4 Txd Pin; Figure 18.5 Rxd Pin - Hitachi SH7751 Hardware Manual

TxD
SPTRW: Write to SPTR
RxD
SPTRR: Read SPTR

Figure 18.4 TxD Pin

SPTRR

Figure 18.5 RxD Pin

Reset
R
Q
D
SPB0IO
C
SPTRW
Reset
R
Q
D
SPB0DT
C
SPTRW
Internal data bus
Rev. 3.0, 04/02, page 711 of 1064
Internal data bus
SCI
Transmit enable signal
Serial transmit data
SCI
Serial receive data