Read Sharp LC-42XD1E (serv.man6) Service Manual online
LC-42XD1E/RU
5 – 16
11. IC301/302: VHiTDA8931T-1Y
SOUND AMP
12. IC4001: RH-iXB680WJZZQ
DIGITAL-PROCESSOR
Pin No.
Pin Name
I/O
Pin Function
1
VSSD
—
negative digital supply voltage; heat spreader
2
VSSA
—
Negative analogue supply voltage.
3
INN
I
inverting input.
4
INP
I
non inverting input.
5
VDDA
—
positive analog supply voltage.
6
POWERUP
I
power-up input.
7
ENABLE
I
enable input.
8
DIAG
O
diagnostic output.
9
CGND
—
control ground; reference ground for pins POWERUP, ENABLE and DIAG.
10
VSSD
—
negative digital supply voltage; heat spreader.
11
VSSD
—
negative digital supply voltage; heat spreader.
12
OVP
I
overvoltage protection reference input.
13
HVP
O
half supply voltage output for charging SE capacitor.
14
STABI
I
decoupling of internal stabilizer.
15
VSSP
—
negative power supply voltage.
16
OUT
O
PWM output.
17
BOOT
I
bootstrap capacitor connection.
18
VDDP
—
positive power supply voltage.
19
HVPI
I
half supply voltage output for reference voltage of input circuitry.
20
VSSD
—
negative digital supply voltage; heat spreader.
Pin No.
Pin Name
I/O
Pin Function
NET NAME
A8, B8, B19, B20, C8, D8,
F1-F4, U23, U24, V1-V4,
AA23-AA26, AC7, AC15,
AD7, AD15, AE7, AE15,
AF7, AF15
F1-F4, U23, U24, V1-V4,
AA23-AA26, AC7, AC15,
AD7, AD15, AE7, AE15,
AF7, AF15
VDD
—
1.8 V power supply
P1.8V
B22, C3, C4, C10, D3, D4,
D10, E4, G25, M1-M4,
W23, W24, AC3, AC4,
AC10, AC13, AC19,
AC23, AC24, AD3, AD4,
AD10, AD13, AD19,
AD23, AD24
D10, E4, G25, M1-M4,
W23, W24, AC3, AC4,
AC10, AC13, AC19,
AC23, AC24, AD3, AD4,
AD10, AD13, AD19,
AD23, AD24
VDD3
—
3.3 V power supply
P3.3V
AD6
RTCVDD
—
Low power controller 1.8 V power supply
P1.8V
B13, B21, D25, K10-K17,
L10-L17, M10-M17, N10-
N17, P10-P17, R10-R17,
T10-T17, U10-U17
L10-L17, M10-M17, N10-
N17, P10-P17, R10-R17,
T10-T17, U10-U17
GND
—
Ground for power supplies
GND
C4
Others
Typical load, but the maximum is 75 pF.
S8
SDRAM/EMI
Typical load, but the maximum is 75 pF.
S8b
SDRAM/EMI
Typical load, but the maximum is 75 pF.
E8
EMI (programmable)
Typical load, but the maximum is 75 pF.
P4
PIO
Typical load, but the maximum is 75 pF.
AE11
VDDVDACRGB
—
3.3 V power supply for RGB video DAC
VDDDAC
AE9
VDDVDACYCC
—
3.3 V power supply for YCC video DAC
VDDDAC
AD11
GNDVDACRGB
—
Ground for RGB video DAC
GNDDAC
AD9
GNDVDACYCC
—
Ground for YCC video DAC
GNDDAC
AD8
SHIELDVDAC
—
Shield ground for 2 x video DACs
GND A
AE10
IREFDACRGB
—
RGB video DAC current reference
YOUT
AE8
IREFDACYCC
—
YCC video DAC current reference
AC9
VREFDACRGB
—
RGB video DAC voltage reference
AC8
VREFDACYCC
—
YCC video DAC voltage reference
A10
VDDVPLL
—
3.3 V power for video PLL
VDDPLL
C13
VDDAUDIOFSYN
—
1.8 V dedicated power for low jitter audio clock fre-
quency synthesizer
quency synthesizer
VDDF3
B12
GNDAUDIOFSYN
—
Dedicated ground for low jitter audio clock frequency
synthesizer
synthesizer
GNDF3
C12
VDDGENFSYN
—
1.8 V dedicated power for nonaudio clock frequency
synthesizer
synthesizer
VDDF3
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