Rev. 2.0, 11/00, page 743 of 1037
28.12.5
Additional V Pulse Signal
Figure 28.44 shows the additional V pulse signal. The Mlevel and Vpulse signals are generated
by the head-switch timing generator. The OSCH signal is combined with these to produce
equalizing pulses. The polarity can be selected by the POL bit in the additional V register
(ADDVR). The Vpulse pin outputs a low level by a reset, and in standby mode and module stop
mode.
R/W
R/W
· ADDVR
· ADDVR
R/W
Internal bus
R/W
R/W
CUT
VPON
HMSK
POL
HiZ
STBY
V
CC
V
CC
V
SS
V
SS
Rs
Rs
Vpulse pin
OSCH
Vpulse
Mlevel
[Legend]
STBY : Power-down mode signal
Vpulse, Mlevel : Signal from the HSW timing generator
Rs : Voltage division resistance (20 k : Reference value)
Figure 28.44 Additional V Pin
Summary of Contents for Hitachi H8S/2191
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