Zilog Z80180 - Manual (Page 169)

Z8018x
Family MPU User Manual
154
UM005003-0703
Figure 60. Transmit Timing–External Clock
CKS
TXS
TE
EF
Read or write of CSI/O
Transmit/Receive
Data Register
2.5 f 2.5 f 2.5 f 2.5 f
7.5 f 7.5 f 7.5 f 7.5 f
LSB MSB