Z80180 Datasheet, PDF (168/326 Pages) Zilog, Inc. – Z8018x Family MPU

Z 8018x Fam ily
M PU Us e r M anual
153
CSI/O and RESET
During RESET each bit in the CNTR is initialized as defined in the
CNTR register description. CSI/O transmit and receive operations in
progress are aborted during RESET. However, the contents of TRDR are
not changed.
CKS
TXS
LSB
MSB
TE
EF
Read or write of CSI/O
Transmit/Receive
Data Register
Figure 59. Transmit Timing Diagram–Internal Clock
UM005001-ZMP0400