Hitachi SH7750 series Hardware Manual page 653

MD7/TxD
Mode setting register
SPTRW: Write to SPTR
RxD
SPTRR: Read SPTR
Figure 18.4 MD7/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. 4.0, 04/00, page 643 of 850
Internal data bus
SCI
Transmit enable signal
Serial transmit data
SCI
Serial receive data