Sony NV-U74 Service Manual page 39

MAIN BOARD IC1001 RTPXA270C5C520 (CPU)
Pin No. Pin Name
A1, A2 VSS_CORE
A3 XCS1
A4 VCC_MEM
A5 VCC_SRAM
A6 MA1
A7 VCC_CORE
A8, A9 VCC_SRAM
A10 XPWE
A11 STD_TXD
A12 VCC_IO
A13 AC97_RESET_X
A14 AC97_BITCLK
A15 GPIO37
A16 VCC_IO
A17 SSPSFRM
A18 PWM_OUT0
A19 MNAND_DAT0
A20 MSSCLK
A21 FFRXD
A22 SDA
A23, A24 VCC_USB
B1, B2 VSS_CORE
B3 XCS0
B4 VCC_SRAM
B5 VSS_CORE
B6, B7 XCS5, XCS2
B8 VCC_MEM
B9 RDY
B10 HP_XDET
B11 STD_RXD
B12 VCC_CORE
B13 AC97_SDATA_IN_0
B14 SSPTXD2
B15 SSPRXD
B16 SSPSCLK
B17 MNAND_DAT2
B18 XMSINS
B19 GPIO35
B20 BTCTS
B21 VCC_CORE
B22 USBC_P
B23, B24 VCC_USB
C1, C2 MA18, MA22
C3 VCC_MEM
C4 MA24
C5 VSS_MEM
C6 MA0
C7, C8 XCS4, XCS3
C9 RD/XWR
C10 AC97_IRQ
C11 LCD3.2V_ON
C12 AC97_SYNC
C13 AC97_SDATA_OUT
C14 SSPSCLK2
C15 USB_XDET
I/O
- Ground terminal
O Chip select signal output terminal
- Power supply terminal (+3V)
- Power supply terminal (+1.1V)
O Address signal output to the NOR fl ash memory
- Power supply terminal (+1.5V)
- Power supply terminal (+1.1V)
O Write enable signal output terminal
O Serial data for debug output to the USB connector
- Power supply terminal (+3.2V)
O Reset signal output to the audio CODEC
I Bit clock signal input from the audio CODEC
O Not used
- Power supply terminal (+3.2V)
O Chip select signal output terminal
O Liquid crystal display back light LED control signal output to the LED driver
I/O Two-way data bus with the NAND fl ash memory
O Serial clock signal output to the NAND fl ash memory
I Serial data input from the GPS controller
I/O Two-way I2C data bus terminal
- Power supply terminal (+3.2V)
- Ground terminal
O Chip select signal output to the NOR fl ash memory
- Power supply terminal (+1.1V)
- Ground terminal
O Chip select signal output terminal
- Power supply terminal (+3V)
O Ready/busy signal output terminal
I Headphone insert detection signal input terminal
I Serial data for debug input from the USB connector
- Power supply terminal (+1.5V)
I Serial data input from the audio CODEC
O Serial data input terminal
I Serial data input terminal
O Serial clock signal output terminal
I/O Two-way data bus with the NAND fl ash memory
I/O Two-way command bus with the NAND fl ash memory
O Not used
I Flow control signal input terminal
- Power supply terminal (+1.5V)
I/O Two-way USB client data (+) bus with the USB controller
- Power supply terminal (+3.2V)
O Address signal output to the SD-RAM and NOR fl ash memory
- Power supply terminal (+3V)
O Address signal output to the SD-RAM
- Ground terminal
O Address signal output terminal
O Chip select signal output terminal
O Read/write selection signal output terminal
I Interrupt request signal input from the audio CODEC
O Power supply on/off control signal output terminal for liquid crystal display
O Sync signal output to the audio CODEC
O Serial data output to the audio CODEC
I Interrupt request signal input terminal
I USB connection detection signal input from the USB connector
Description
Not used
Not used
"L": reset
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
NV-U74
"H": power on
"L": USB is connected
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