Yamaha MCR-330 Service Manual page 35

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