Renesas Hitachi H8S/2194 Series Hardware Manual page 38

Type Symbol
A/D AN7 to
converter AN0
AN8
AN9
ANA
ANB
$'75*
Servo AUDIO FF
circuits
VIDEO FF
CAPPWM
DRMPWM
Vpulse
C.Rotary
/PS0
H.AmpSW
/PS1
COMP
/PS2
CTL (+)
CTL (-)
CTL Bias
Pin No. I/O
18 to 11 Input
19 Input
20
21
22
24 Input
99 Output
100 Output
101 Output
102 Output
110 Output
103 Output,
input/
output
104 Output,
input/
output
105 Input,
input/
output
1 Input
3 /output
4 Input
Name and Function
Analog input channels 7 to 0:
Analog data input pins. A/D conversion is
started by a software triggering
Analog input channels 8, 9, A and B:
Analog data input pins. A/D conversion is
started by an external, hardware, or software
triggering
A/D conversion external trigger input:
Pin for input of an external trigger to start A/D
conversion
Audio FF:
Output pin for audio head switching signal
Video FF:
Output pin for video head switching signal
Capstan mix:
12-bit PWM output pin giving result of capstan
speed error and phase error after filtering
Drum mix:
12-bit PWM output pin giving result of drum
speed error and phase error after filtering
Additional V pulse:
Three-level output pin for additional V signal
synchronized to the Video FF signal
Color rotary signal:
Output pin for color signal processing control
signal in four-head special-effects playback
Head-amp switch:
Output pin for preamplifier output select signal in
four-head special-effects playback. This pin can
also be used as a general port when not used
Compare input:
Input pin for signal giving the result of
preamplifier output comparison in four-head
special-effects playback. This pin can also be
used as a general port when not used
CTL head (+) and (-) pins:
I/O pins for CTL signals
CTL primary amp bias supply:
Bias supply pin for CTL primary amp
Rev. 2.0, 11/00, page 11 of 1037