Yamaha MCR-330, Service Manual

Page: 35 / 70

35
CRX-330/NS-BP100
CRX-330/NS-BP1
0
0
Pin
No.
Port Name
Function Name
(P.C.B.)
I/O Detail of Function
1 P96/ANEX1/SOUT4 RDS_N_RST O
2 P95/ANEX0/CLK4 RDS_SCK SO
3 P94/DA1/TB4in RDS_RDY I
4 P93/DA0/TB3in TUN_N_CS O
5 P92/TB2in/SOUT3 FL_MOSI SO
For FL control / TUNER control
3.3V to 5.0V conversion for TUNER
6 P91/TB1in/SIN3 TUN_MISO SI
For TUNER control
5.0V to 3.3V conversion
7 P90/TB0in/CLK3 FL_SCK SO
For FL control / TUNER control
3.3V to 5.0V conversion for TUNER
8 BYTE BYTE MCU When in single chip mode: Vss
9 CNVss CNVss MCU
When in single chip mode: Vss
When writing: Vcc
10 P87/Xcin – MCU
11 P86/Xcout – MCU
12 /RESET N_RST MCU Reset
13 Xout Xout MCU
Oscillation output
Oscillation stopped when in Sleep mode
14 Vss Vss MCU Ground of microprocessor
15 Xin Xin MCU
Oscillation input
20MHz ceramic lock
16 Vcc1 Vcc MCU Power 3.3V of microprocessor
17 P85/NMI NMI MCU Unused and so connect to Vcc
18 P84/INT2 – IRQ
19 P83/INT1 IPD_DET IRQ iPod detection / 47k pull-up
20 P82/INT0 – O
21 P81/TA4in/U/CTS5/RTS5 IPAP_DET I iPod accessory power detection / 470k pull-down
22 P80/TA4out/U/RXD5/SCL5 IPD_MISO SI iPod UART communication
23 P77/TA3in/CLK5 CD_UCS O 470k pull-down
24 P76/TA3out/TXD5/SDA5 IPD_MOSI SO iPod UART communication
25 P75/TA2in/W – IO
26 P74/TA2out/W FL_CLOCK O FL clock output
27 P73/CTS2/RTS2/TA1in/V – O
28 P72/CLK2/TA1out/V AMP_CLKIN O D-AMP clock output
29 P71/RXD2/SCL2/TA0in/TB5in EP_SCL SIO
EEPROM communication I2C
+3.3S/3.3k-ohms pull-up
30 P70/TXD2/SDA2/TA0out EP_SDA SO
EEPROM communication I2C
+3.3S/3.3k-ohms pull-up
31 P67/TXD1/SDA1 TXD1 MCU
For FLASH writing (TX)
+3.3M/47k-ohms pull-up
32 P66/RXD1/SCL1 RXD1 MCU
For FLASH writing (RX)
+3.3M/47k-ohms pull-up
33 P65/CLK1 CLK1 MCU
For FLASH writing (clock)
+3.3M/47k-ohms pull-up
34 P64/CTS1/RTS1/CTS0/CLKS1 BUSY MCU BUSY signal output for FLASH writing
35 P63/TXD0/SDA0 CD_MOSI SO Communication with CD control LSI
36 P62/RXD0/SCL0 CD_MISO SI
Communication with CD control LSI
100k pull-down
37 P61/CLK0 CD_SCK SO Communication with CD control LSI
38 P60/CTS0/RTS0 CD_CS O Chip select for CD control LSI
39 P57/RDY/CLKout CLKOUT O
40 P56/ALE CD_N_RST O Reset to CD control LSI
41 P55/HOLD /EMP I 100k pull-down
42 P54/HLDA CD_LSW0 I Loader switch 0 / 100k pull-up
43 P53/BCLK CD_LSW1 I Loader switch 1 / 100k pull-up
44 P52/RD DRV_MUTE O CD driver mute control / 47k pull-down