Rev. 2.0, 11/00, page 647 of 1037
Value set in reference
period register 1 (RFD)
FDS bit = "1"
Counter mask
(Clear signal mask)
Counter
Value set in REF30
counter register (RFC)
REF30
VD (except in PB)
REC(ASM)
PB
Toggle mask
REC/PB
REF30P
Masking
period
Masking
period
25%
25%
25%
Figure 28.19 Generation of the Reference Signal when PB is Switched to REC
where RFD Bit is 1 (when VD Signal is Not Detected) (2)
Summary of Contents for Hitachi H8S/2191
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