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Service Manual
16
125 GPIO_13
I/O General-purpose input/output 13
126 GPIO_14
I/O General-purpose input/output 14
127 PPWR
O
Panel power enable
128 AVDD_BIAS_33
P
Analog 3.3V supply for LVDS PLL and Bandgap
12.2 U402 (Serial Flash)
Pin
Symbol
I/O
Description
1
CE#
I
The device is enabled by a high to low transition on CE#. CE#
must remain low for the duration of any command sequence.
2
SO
I/O
To transfer commands, addresses, or data serially into the device.
3
WP#
I/O
The write protect (WP#) pin is used to enable/disable BPL bit in
the status register.
4
VSS
G
Connect ground
5
SI
I/O
To transfer commands, addresses, or data serially into the device
input are latched on the rising edge of the serial clock.
6
SCK
I/O
To provide the timing of serial interface.
Commands, addresses, or input data are latched on the rising
edge of the clock input, while output data is shifted out on the
Falling edge of the clock input.
7
HOLD
I/O
To temporarily stop serial communication with SPI flash
memory without resetting the device.
8
VDD
P
To provide power supply.
12.3 U901 (USB HUB IC)
Pin
Symbol
I/O
Description
1
VDDA33
+3.3V Filtered analog power
2
USBDP0
I/O
This pin connect to the upstream USB bus data signal
3
USBDN0
I/O
This pin connect to the upstream USB bus data signal
4
VSS
Ground
5
USBDN1
I/O
This pin connect to the downstream USB peripheral device
attached to the HUB ports
6
USBDP1
I/O
This pin connect to the downstream USB peripheral device
attached to the HUB ports
7
VDDA33
+3.3V Filtered analog power
8
USBDP2
I/O
This pin connect to the downstream USB peripheral device
attached to the HUB ports
9
USBDN2
I/O
This pin connect to the downstream USB peripheral device
attached to the HUB ports
10
VSS
Ground
11
USBDN3
I/O
This pin connect to the downstream USB peripheral device
attached to the HUB ports
12
USBDP3
I/O
This pin connect to the downstream USB peripheral device
attached to the HUB ports
13
VDDA33
+3.3V Filtered analog power
14
USBDP4
I/O
This pin connect to the downstream USB peripheral device
attached to the HUB ports
15
USBDN4
I/O
This pin connect to the downstream USB peripheral device
attached to the HUB ports
16
VSS
Ground
17
NC
Not Connect
18
NC
Not Connect
19
AM4/LED-EN
I/O
Amber indicator LED for port 4. Will be active low when LED
support is enabled via EEPROM or SMBus.
Summary of Contents for 1907FPf
Page 1: ...Service Manual 0 Service Manual LCD Monitor 1907FPf ...
Page 55: ...Service Manual 54 ...
Page 56: ...Service Manual 55 Attachment 2 Schematic ...
Page 57: ...Service Manual 56 ...
Page 58: ...Service Manual 57 ...
Page 59: ...Service Manual 58 ...
Page 60: ...Service Manual 59 ...
Page 61: ...Service Manual 60 ...
Page 62: ...Service Manual 61 ...
Page 63: ...Service Manual 62 ...
Page 64: ...Service Manual 63 ...
Page 65: ...Service Manual 64 ...
Page 66: ...Service Manual 65 ...
Page 67: ...Service Manual 66 ...
Page 68: ...Service Manual 67 ...
Page 69: ...Service Manual 68 ...
Page 70: ...Service Manual 69 ...
Page 71: ...Service Manual 70 Attachment 3 PCB Layout Interface Board ...
Page 72: ...Service Manual 71 ...
Page 73: ...Service Manual 72 Power Inverter Board ...
Page 74: ...Service Manual 73 Keypad Board ...
Page 75: ...Service Manual 74 ...
Page 76: ...Service Manual 75 USB Control Board ...
Page 77: ...Service Manual 76 Inverter Control Board ...
Page 78: ...Service Manual 77 Power Control Board ...
Page 79: ...Service Manual 78 ...
Page 80: ...Service Manual 79 ...