Sony HCD-ZX66i Service Manual page 70

HCD-ZX66i/ZX99i
PANEL COM BOARD IC901 MB90M407PF-G-146E1 (VACUUM FLUORESCENT DISPLAY DRIVER, KEY CONTROL)
Pin No. Pin Name
1 to 4 G4 to G1
5 to 10 SEG-1 to SEG-6
11 VSS-IO
12 to 22 SEG-7 to SEG-17
23 VDD-FIP
24 to 41 SEG-18 to SEG-35
42 VSS-IO
43 SEG-36
44 NC
45 SPK MODE LED
46 CD LED
47 GAME LED
48 VKK
49 MD0
50 MD1/VDD-VFT
51 MD2
52 VOL 1, 2
53 VOL 3, 4
54 VOL 5, 6
55 VOL 7, 8
56 VOL 9, 10
57 VOL 11 LED
58 NC
59 LED SELECTOR
60 I2C DATA
61 I2C CLOCK
62 AVCC
63 AVSS
64 to 69 KEY0 to KEY5
70 BPF1-F01
71 BPF1-F02
72 BPF1-F03
73 BPF1-F04
74 ALL BAND
75 JOG A
76 JOG B
77 RESET
78 SOFT TEST
79 VOL B
80 VOL A
81 VSS-CPU
82 X OUT
83 X IN
84 VCC-CPU
85 NO USE
86 to 100 G19 to G5
70
I/O
O Grid drive signal output for the vacuum fl uorescent display
O Segment drive signal output for the vacuum fl uorescent display
— Ground (for I/O port)
O Segment drive signal output for the vacuum fl uorescent display
— Power supply pin (+3.3 V) (for the vacuum fl uorescent display)
O Segment drive signal output for the vacuum fl uorescent display
— Ground (for I/O port)
O Segment drive signal output for the vacuum fl uorescent display
O Not used. (Open)
O Dynamic LED drive signal output of the X-ROUND indicator (H: LED on)
O Not used. (Open)
O Not used. (Open)
— Power supply pin (-33 V) (for the vacuum fl uorescent display)
I Setting pin for the CPU operational mode
I Setting pin for the CPU operational mode
I Setting pin for the CPU operational mode
O Dynamic LED drive signal output of the ILLUMINATION 1, 2 indicators (H: LED on)
O Dynamic LED drive signal output of the ILLUMINATION 3, 4 indicators (H: LED on)
O Dynamic LED drive signal output of the ILLUMINATION 5, 6 indicators (H: LED on)
O Dynamic LED drive signal output of the ILLUMINATION 7, 8 indicators (H: LED on)
O Dynamic LED drive signal output of the ILLUMINATION 9, 10 indicators (H: LED on)
O Dynamic LED drive signal output of the ILLUMINATION 11 indicator (H: LED on)
O Not used. (Open)
O Dynamic LED drive select signal output
Data input/output with I2C communication between the system control IC and display control
I/O
IC
Clock signal input/output with I2C communication between the system control IC and display
I/O
control IC
— Power supply pin (+3.3 V) (for A/D conversion)
— Ground (for A/D conversion)
I Key signal input (A/D input)
Spectrum analyzer drive signal input from the spectrum analyzer band-pass fi lter IC (A/D
I
input)
Spectrum analyzer drive signal input from the spectrum analyzer band-pass fi lter IC (A/D
I
input)
Spectrum analyzer drive signal input from the spectrum analyzer band-pass fi lter IC (A/D
I
input)
Spectrum analyzer drive signal input from the spectrum analyzer band-pass fi lter IC (A/D
I
input)
Spectrum analyzer drive signal input from the spectrum analyzer band-pass fi lter IC (A/D
I
input)
JOG dial pulse signal input from X-ROUND JOG rotary encoder (A phase input) (HCD-
I
ZX99i)
JOG dial pulse signal input from X-ROUND JOG rotary encoder (B phase input) (HCD-
I
ZX99i)
I System reset signal input from the system control IC (L: reset)
O Output for the software test point
I JOG dial pulse signal input from VOLUME rotary encoder (B phase input)
I JOG dial pulse signal input from VOLUME rotary encoder (A phase input)
— Ground (for CPU)
O System clock signal output (4 MHz)
I System clock signal input (4 MHz)
— Power supply pin (+3.3 V) (for CPU)
O Not used. (Open)
O Grid drive signal output for the vacuum fl uorescent display
Description