Read Sharp WA-MP50HS (serv.man3) Service Manual online
WA-MP50H/WA-MP55H
6 – 4
U2 VHISTMP3520-1: System Microcomputer (STMP3520) (3/4)
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Pin No.
Terminal Name
Input/Output
Function
49
DCDC_Batt
DCDC_Gnd
DCDC Battery.
50
DCDC_Gnd
DCDC_Gnd
DCDC Ground.
51*
ONCE_DSK
Output
Debug Clock.
52*
ONCE_DSO
Output
Debug Data Out.
53*
ONCE_DRN
Input
Debug Reset.
54
DCDC_mod2
—
DCDC mode pin 2.
55
MIC
—
Microphone Input.
56
BATT
—
Battery Input.
57
LINE1L
—
Line-in 1 Left.
HP_SENSE
—
Direct coupled headphones sense.
58
LRADC1
—
Low Resolution ADC channel 2 Input.
MIC_BIAS
—
Microphone bias.
59
LINE1R
—
Line-in 1 Right.
HP_COMMON
—
Direct coupled Headphones common amp.
60
LRADC2
—
Low Resolution ADC channel 3 input.
TEMP_SENSE
—
Temperature sensor bias current.
MIC_BIAS
—
Alternate Microphone Bias.
61
VDD5V
Input
USB/External 5V power source.
62
HPL
—
Headphones/Line-out Left.
63
VSSHP
—
Headphones Ground.
64
VDDHP
Input
Headphones Power.
65
HPR
—
Headphones/Line -out Right.
66
Vbg
—
Bandgap Decoupling Capacitor.
67
Vag
—
Analog Ground Decoupling Capacitor.
68
ADCL
—
ADC Left Filter Capacitor.
69
ADCR
—
ADC Right Filter Capacitor.
70
REF_RES
—
USB Precision Resistor.
71
RREDp
—
ADC Positive Reference Capacitor.
72
VSSA1
—
Analog Ground 1.
73
VDDA1
Input
Analog Power 1.
74
XTALO
—
Crystal Out.
75
XTALI
—
Crystal In.
76
VDDPLL
Input
PLL Power.
77
VDDXTAL
Input
Power for XTAL oscillator.
78
VSSPLL
—
PLL Ground.
79
FRESET
—
Fast Reset, Fast Falling Edge (<15ns
Powers Down Device.
Powers Down Device.
PSWITCH
Power Switch.
80
USB_DP
Input/Output
USB Positive Data Line.
81
USB_DM
Input/Output
USB Negative Data Line.
82
GP11
Input/Output
GP0B11
83
GP9
Output
Pulse Width Modulator #2.
84
GP8
Input/Output
GP0B8
85
GP10
Input/Output
GP0B10
86
VDDD3
Input
Digital Core Power 3.
87
VSSD3
—
Digital Core Ground 3.
88
GP7
Input/Output
GP0B7
I2S_DataO2
Output
I2S Data Out 2.
PWM3
Output
Pulse Width Modulator #3.
89
GP6
Input/Output
GP0B6
I2S_DataO1
Output
I2S Data Out 1.
90
GP5
Input/Output
CGP0B5
GI2S_DataO0
Output
I2S Data Out 0.
91
GP4
Input/Output
GP0B4
I2S_BCLK
Input
I2S Bit Clock.
92
GP3
Input/Output
GP0B3
I2S_LRCLK
Input
I2S Word Clock.
93
GP2
Input/Output
GP0B2
I2S_DataI2
Input
I2S Data In 2.
94
GP1
Input/Output
GP0B1
I2S_DataI1
Input
I2S Data In 1.
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