BU38603 Datasheet, PDF (3/7 Pages) Rohm – System control servo

Video ICs
•^{Pin descriptions}
Pin No. Pin name
Function
1
VSAD
A / D convertor circuit GND.
2
ADC0
3
ADC1
4
ADC2
Can be optionally mask – programmed
5
ADC3
to be either A / D or parallel inputs.
6
ADC4
7
ADC5
8
ADC6
9
ADC7
10
VDAD
A / D convertor circuit power supply.
11
DFGOUT Drum FG amplifier output
12
DFGIN
Drum FG amplifier input
13
DPGIN
Drum PG comparator input
14
CFGIN
Capstan FG amplifier input
15
CFGOUT Capstan FG amplifier output
16
VSSA
Linear circuit GND
17
Vref
Internal BIAS and power-on reset pin
18
CTLAMP – CTL amplifier – input
19 CTLAMPOUT CTL amplifier output
20
CTL –
CTL coil – connection
21
CTL +
CTL coil + connection
22
VDDA
Linear circuit power supply
23
RESETB _{Power supply reset}
24
TEST
Test mode input (normally GND)
25
PO5
Parallel output
26
PO4
27
P31
28
P30
Parallel I / O
29
P29
30
P28
31
P27
32
P26
Parallel I / O and pattern generator
33
P25
output
34
P24
35
P23
36
P22
37
PO3
Parallel output and pattern generator output
38
VHSW
Pattern generator VHSW output
39
AHSW
Pattern generator AHSW output
40
HAMPSW Head amplifier switch output
BU38603 / BU38703 / BU38803
Pin No.
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
Pin name
CHROT
FV
VDD
PWM0
PWM1
P21
P20
P19
P18
P17
P16
P15
P14
P13
P12
P11
P10
P9
PO2
PO1
PO0
CLOCKO
CLOCKI
VSS
P8
P7
P6
P5
P4
P3
P2
P1
P0
SI
SO
SCK
ENVIN
CSYNC
COUNTP
PBCTL
Function
Chroma rotary switch output
Pseudo Vsync output
Logic circuit power supply
PWM output
Parallel I / O
Parallel output
For connection of oscillator
Logic circuit GND
Parallel I / O
Parallel I / O and external interrupt
Serial I / O data input
Serial I / O data I / O
Serial I / O clock I / O
Envelope detector logic input
Composite signal logic input
CTL counter pulse output
CTL logic output
3