Zilog Z86193 - Manual (Page 134)

Z8
®
CPU
User Manual
UM001604-0108 Serial Input/Output
127
slave modes. While in slave mode, if the RxBUF is not read before the next data stream is
received and loaded into the RxBUF Register, Receive Character Overrun (RxCharOver-
run) occurs. Because there is no requirement for clock control in slave mode, bit D1 in the
SPI Control Register is used to log any RxCharOverrun (see
Figure 118 and Figure 119 on
page 128).
Figure 118. SPI Timing
TSK
SS
SK
D0
DI
1
2
3
4
5