Dell 1907FPf Service Manual page 15

44 RESERVED
45 RESERVED
46 RESERVED
47 VDD_OUT_33
48 VSS_OUT
49 PBIAS
50 PWM0/GPO_4
51 GPIO_0
52 CRVSS
53 RVDD_33V
54 CRVSS
55 CVDD_18
56 GPIO_1
57 GPIO_2
58 GPIO_3
59 SPI_CSn
60 SPI_CLK
61 SPI_DI
62 SPI_DO
63 RVDD_33V
64 DDC_SCL_VGA
65 DDC_SDA_VGA
66 DDC_SCL_DVI/
HOST_SCA
67 DDC_SDL_DVI/
HOST_SDA
68 AVSS_DVI
69 REXT
70 AVDD_DVI_18
71 AVSS_DVI
72 RX2+
73 RX2-
74 AVDD_DVI_33
75 RX1+
76 RX1-
77 AVSS_DVI
78 AVDD_DVI_18
79 AVSS_DVI
80 RX0+
O Reserved; Do not connect
O Reserved; Do not connect
O Reserved; Do not connect
P Digital 3.3V supply for LVDS output
G Digital ground for LVDS output
O Panel backlight enable
I/O PWM0 output or optional general-purpose output GPO_4.
Also used for bootstrap control
I/O General-purpose output GPO_0. Also used for bootstrap control
G Chip digital ground
P Digital Output VDD. Connect to digital 3.3V
G Chip digital ground
P Core VDD connect to digital 1.8V
I/O General-purpose output GPO_1. Also used for bootstrap control
I/O General-purpose output GPO_2. Also used for bootstrap control
I/O General-purpose output GPO_3. Also used for bootstrap control
I/O SPI ROM chip select. Also used for bootstrap control.
I/O SPI ROM Clock output.
I/O SPI ROM Data input. Connect this pin to the data output of
Serial FLASH
I/O SPI ROM Data input. Connect this pin to the data input of Serial
FLASH
P Chip digital ground
I DDC2Bi clock for Analog Port
I/O DDC2Bi clock for Analog Port, internal pull up of 10K ohms
I DDC2Bi clock for DVI Port or host I2C clock signal for
debugging
I/O DDC2Bi clock for DVI Port or host I2C data signal for
debugging, internal pull up of 10k ohms
G Analog GND for DVI input. Reserved for gm2621 and gm2621;
Do not connect
I External reference resistor.
A 1%, 250? resistor should be connected from this pin to pin 74.
Reserved for gm2621 and gm2621; Do not connect.
P Analog VDD (1.8V) for DVI input.
Must be bypassed with external capacitor(s) to AVSS_DVI.
Reserved for gm2621 and gm2621; Do not connect.
G Analog GND for DVI input. Reserved for gm2621 and gm2621;
Do not connect.
I Do not connect.
I Do not connect.
P Analog VDD (3.3V) for DVI input. Reserved for gm2621 and
gm2621; Do not connect.
I Do not connect.
I Do not connect.
G Analog GND for DVI input. Reserved for gm2621 and gm2621;
Do not connect.
P Analog VDD (1.8V) for DVI input.
Must be bypassed with externa l capacitor(s) to AVSS_DVI.
Reserved for gm2621 and gm2621; Do not connect.
G Analog GND for DVI input. Reserved for gm2621 and gm2621;
Do not connect.
I Do not connect.
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Service Manual