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IC BLOCK DIAGRAM
No.
Pin Name
I/O
Function
No.
Pin Name
I/O
Function
1 LCD DATA
I/O
LCD Driver IC data output
51 I O4
I/O
Smart media (input/output data)
2 LCD CLK
I/O
LCD Driver IC clock output
52 I O5
I/O
Smart media (input/output data)
3 P CON
O
Power control (Power ON=high)
53 I O6
I/O
Smart media (input/output data)
4 A MUTE1
O
Audio mute (Mute=high)
54 I O7
I/O
Smart media (input/output data)
5 A MUTE2
O
Audio mute (Mute=high)
55 BVDD
6 VDD
O
Power supply
56 BVSS
7 VSS
O
GND
57 USB ON
I
USB ON/OFF check (ON=High)
8 DAC PWR
O
DAC Power control (Power OFF=LOW)
58 AC IN
I
AC Adapter detect (AC have=LOW)
9 DD PWR
O
DD Converter power control (Power ON=high)
59 MIC IN
I
Detect the external mic presence (There is a Mic=LOW)
10 PULL UP
O
PULL UP Resister power control (Power ON=high)
60 SSFDC SW
I
SmartMedia insert switch
11 AMP PWR
O
AMP Circuit power control (Power ON=high)
61 SSFDC IN
I
Detect the SmartMedia presence (Yes=LOW)
12 MCLK IN
I
MCLK Count input
62 SSFDC 3V
I
Detect the 3.3V SmartMedia (3.3V=High)
13 ADC POW
O
ADC Power control (Power OFF=LOW)
63 SSFDC REC
I
Check write on a SmartMedia (Ability=High)
14 ADC CLK
O
A/D,D/A Converter master lock output
64 R/B
I/O
15 DAC LRCK
I/O
ADC/DAC LRCK output
65 MIC SEL1
O
Mic change control
16 BEEP
O
Beap signal output
66 MIC SEL 2
O
Mic change control
17 LCD RESET
I/O
LCD Controller Reset output
67 MIC SEL 3
O
Mic change control
18 IC/VPP
General action =LOW/FLASH time = high
68 MIC SENS1
O
Mic sensitivity control (1)
19 USB 0
I/O
Data input/output
69 MIC SENS2
O
Mic sensitivity control (2)
20 USB 1
I/O
Data input/output
70 SEL 24H
I
Select the 12H/24H change (12H=LOW)
21 USB 2
I/O
Data input/output
71 AVDD
22 USB 3
I/O
Data input/output
72 AVSS
23 USB 4
I/O
Data input/output
73 AVREF
24 USB 5
I/O
Data input/output
74 KEY0
I
Key input
25 USB 6
I/O
Data input/output
75 KEY1
I
Key input
26 USB 7
I/O
Data input/output
76 FOOT IN
I
FOOT SW input
27 USB WR
O
Data lead select (Lead=LOW)
77 BATT IN
I
Battery residual quantity check
28 USB RD
O
Data lead select (Lead=LOW)
78 HOLD SW
I
Hold SW input
29 USB STP
I
Device detector (Permission=HIGH)
79 FAST SW
I
High speed listening (ON=LOW)
30 USB CE
O
Chip enable (Enable=LOW)
80 SLOW SW
I
Low speed listening (ON=LOW)
31 RESET
I
Reset signal
81 VAS IN
I
Sound signal level detect
32 XT1
I
82 LEVEL IN
I
Volume/VAS sensitivity level input
33 XT2
83
I
34 VDD
84 CASE SW
I
Battery lid detect switch
35 X2
Main oscillation (Ceramic 16.384 MHz)
85
I
36 X1
I
Main oscillation (Ceramic 16.384 MHz)
86
O
37 VSS
GND
87
O
38 CLKOUT
88 USB STOP
O
39
I/O
89
O
40 WPB
O
Write protect
90 ENROL
I
Enrol output permission (Permission=LOW)
41 R/B
I
Ready/Busy check (Busy=low)
91
O
42 WEB
O
Write enable
92
O
43 REB
O
Lead enable
93 LCD CS
I/O
LCD Driver IC chip select output
44 CEB
O
Chip enable
94 RTC DATA
I/O
Real time clock IC data output
45 ALE
O
Address ratch
95 LCD RS
I/O
LCD Driver IC resister select output
46 CLE
O
Command ratch
96 RTC CLK
I/O
Real time clock IC clock output
47 I O0
I/O
Smart media (input/output data)
97 DAC IN
I
ADC serial data input
48 I O1
I/O
Smart media (input/output data)
98 DAC OUT
O
DAC serial data output
49 I O2
I/O
Smart media (input/output data)
99 DAC CLK
O
ADC/DAC clock output
50 I O3
I/O
Smart media (input/output data)
100
O
IC401 UPD703017 (MICRO COMPUTER)
The figure which isn't mentioned please watch a schematic diagram.
