Sharp LC-37D90U Service Manual page 71

2.15. RH-iXB684WJQZQ (ASSY: IC8601)
DEMODULATOR
• Block Diagram [RH-iXB684WJQZQ (ASSY: IC8601)]
• Pin Function [RH-iXB684WJQZQ (ASSY: IC8601)]
Pin No. Pin Name
Analog to Digital Converter (ADC) Interface
11 ADC_INN
10 ADC_INP
17 ADC_VREF_N
14 ADC_VREF_P
Oscillator Interface
7 OSC_XTAL_IN
6 OSC_XTAL_OUT
MPEG Interface
51 MPEG_CLK
41 MPEG_DATA_0
42 MPEG_DATA_1
47 MPEG_DATA_2
48 MPEG_DATA_3
50 MPEG_DATA_4
54 MPEG_DATA_5
57 MPEG_DATA_6
59 MPEG_DATA_7/
SER_DATA
63 MPEG_DATA_EN
65 MPEG_ERR
66 MPEG_PKT_SYNC
I2C Interface
94 I2C_ADDR0
95 I2C_ADDR1
67 I2C_SCL
71 I2C_SDA
Reset Interface
72 /POWER_RESET
JTAG Interface
78 TCK
73 TDI
82 TDO
77 TMS
76 TRST
GPIO Interface
104 GPIO_0
103 GPIO_1
100 GPIO_2/PDET_COMP_IN
99 GPIO_3
98 GPIO_4
93 GPIO_5
89 GPIO_6
88 GPIO_7
87 GPIO_8
84 GPIO_9
83 GPIO_10
AGC Interface
100 GPIO_2/PDET_COMP_IN
111 PDET_REF_OUT
114 RF_AGC
117 AUX_AGC
119 IF_AGC
Power and Ground Pins
I/O
I ADC negative differential input.
I ADC positive differential input.
O ADC negative reference.
O ADC positive reference.
I Oscillator crystal input.
O Oscillator crystal output.
O MPEG clock.
O MPEG parallel data output bit 0.
O MPEG parallel data output bit 1.
O MPEG parallel data output bit 2.
O MPEG parallel data output bit 3.
O MPEG parallel data output bit 4.
O MPEG parallel data output bit 5.
O MPEG parallel data output bit 6.
O MPEG parallel data output bit 0 OR Serial Data.
O MPEG data enable.
O MPEG error.
O MPEG packet sync.
I I2C slave address bit 0.
I I2C slave address bit 1.
I/O I2C serial clock.
I/O I2C serial data.
I Power-on reset. (asynchronous, active-low)
I Boundary scan serial clock. Must be pulled down to DGND through 10 KO resistor.
I Boundary scan serial input. Must be pulled up to 3.3V.
O Boundary scan serial output.
I Boundary scan test mode select. Must be pulled up to 3.3V.
I Boundary scan asynchronous reset. Must be pulled up to 3.3V.
I/O General purpose I/O bit 0.
I/O General purpose I/O bit 1.
I/O General purpose I/O bit 2 - or -Demodulator RF AGC input from the peak power compar-
ator.
I/O General purpose I/O bit 3.
I/O General purpose I/O bit 4.
I/O General purpose I/O bit 5.
I/O General purpose I/O bit 6.
I/O General purpose I/O bit 7.
I/O General purpose I/O bit 8.
I/O General purpose I/O bit 9.
I/O General purpose I/O bit 10.
O General purpose I/O bit 2 - or -Demodulator RF AGC input from the peak power compar-
ator.
O Demodulator RF AGC - SDM peak power comparator reference output to tuner power
comparator; requires external low-pass filter.
O Demodulator RF AGC - SDM output to the tuner's RF AGC amplifier; requires external
low-pass filter.
O Demodulator AGC - SDM output to auxiliary IF or RF AGC; requires external low-pass fil-
ter.
O Demodulator IF AGC - SDM output to the IF AGC amplifier; requires external low-pass fil-
ter.
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Pin Function
LC-37D90U