Hitachi SH7750 series Hardware Manual page 533

MD7/TxD
Mode setting register
SPTRW: Write to SPTR
RxD
SPTRR: Read SPTR
Rev. 4.0, 04/00, page 522 of 850
Figure 15.3 MD7/TxD Pin
SPTRR
Figure 15.4 RxD Pin
Reset
R
Q
D
SPB0IO
C
SPTRW
Reset
R
Q
D
SPB0DT
C
SPTRW
Internal data bus
Internal data bus
SCI
Transmit enable signal
Serial transmit data
SCI
Serial receive data