Diagrams; Ic Pin Description - Sony ICD-B7 Service Manual

ICD-B7

3-1. IC PIN DESCRIPTION

• IC703 µPD780308GC-A58-8EU (SYSTEM CONTROL)
Pin No. Pin Name
1 to 3 KEY1 to 3
4 XHOLD
5 AMPPOW
6 AVREFON
7 XFMCE
8 VDD0
9 AVREF
10 XFMWE
11 XFMALE
12 VSS1
13 XFMR/B
14 XFMCLE
15, 16 NC
17 XFMRE
18 XFMSE
19 XFMWP
20 CLKOUT
21 BEEP
22 LIGHT
23 to 26 COM0 to 3
27 BIAS
28 to 30 VLC0 to 2
31 VSS0
32 to 61 S0 to 29
62 MGHIGH
63 MGTEST
64 XTEST
65 DSPPOW
66 LEDREC
67 LEDPB
68 RTCCE
69 XDSPIFRQ
70 DSPIFRW
71 XDSPRST
72 SI0
73 SO0
74 SCK0
75 RTCDI
76 RTCDO
77 RTCCLK
78 IC
79 X2
80 X1
81 VDD1
82 XT1
83 XT2
84 XRESET
85 NC
6
SECTION 3

DIAGRAMS

I/O
I Key input
I Hold switch input
O Power down control output for power amplifier IC (IC103).
O A/D reference voltage input
O Chip enable output for flash memory IC (IC701).
— Power supply pin
— A/D reference voltage
O Write enable signal output for flash memory IC (IC701).
O ALE signal output
— Ground
I Ready/Busy signal input from flash memory IC (IC701).
O CLE signal output for flash memory IC (IC701).
O Not used. (Open)
O Read enable signal output for flash memory IC (IC701).
O SE signal output for flash memory IC (IC701).
O WP signal output for flash memory IC (IC701).
O Not used. (Open)
O Beep signal output (2.4 kHz)
O LCD back light control output
O LCD common signal output
O Connect to VDD. (LCD bias)
— LCD drive power supply pin
— Ground
O LCD segment signal output
I Mic gain mode input (High: high mode)
O Mic gain mode test output
I Test pin
O Digital signal processor registor control I/F enable signal output
O OPR (REC) LED (D701: red) ON/OFF output
O OPR (PLAY) LED (D701: green) ON/OFF output
O Real time clock chip enable signal output
O I/F request signal output for DSP IC (IC101).
O I/F data read/write signal output for DSP IC (IC101).
O Reset signal output for A/D, D/A converter, DSP IC (IC101).
I I/F data signal input for DSP IC (IC101).
O I/F data signal output for DSP IC (IC101).
O I/F signal clock output for DSP IC (IC101).
I Real time clock data input
O Real time clock data and digital signal processor registor control data output
O Real time clock I/F data and digital signal processor registor control clock output
— Ground
O System clock output (5 MHz)
— System clock input (5 MHz)
— Power supply pin
— Sub clock input (32.768 kHz)
— Not used. (Open)
I Reset signal input
— Not used. (Open)
Pin Description