BECKHOFF ET1100 - Manual (Page 98)

PDI description
III-84 Slave Controller – ET1100 Hardware Description
CPU_CLK_IN
TS
CS
ADR, BHE
DATA
TA
ADR, BHE
RD/WR
DATA
t
Write
Figure 35: Write access (CS after TS, Write DATA after CS, CS and TA on rising edge)
CPU_CLK_IN
TS
CS
ADR, BHE
DATA
TA
ADR, BHE
RD/WR
DATA
t
Read
Figure 36: Read access (CS together with TS, CS and TA on rising edge)
CPU_CLK_IN
TS
CS
ADR, BHE
DATA
TA
ADR, BHE
RD/WR
DATA
t Read
Figure 37: Read access (CS half a clock period after TS, CS and TA on falling edge)