Renesas Hitachi H8S/2194 Series Hardware Manual page 673

Figures 28.18, 28.19, 28.20 and 28.21 show REF30 (REF30P) when PB is switched to REC
(where FDS bit = 1).
REC/PB
VD (except in PB)
Value set in reference
period register 1 (RFD)
Counter
Value set in REF30
counter register (RFC)
Toggle mask
Counter mask
(Clear signal mask)
REF30
REF30P
Figure 28.18 Generation of the Reference Signal when PB is Switched to REC
Rev. 2.0, 11/00, page 646 of 1037
PB
Cleared
Masking
period
Masking
period
where RFD Bit is 1 (1)
REC(ASM)
Cleared
FDS bit = "1"
Cleared