Yamaha WXA-50 Service Manual page 31

Pin Function Name
Port Name
No. (P.C.B.)
1 SC8TXD NCPU_SPI_MOSI
2 SC8RXD NCPU_SPI_MISO
3 SC8SCK NCPU_SPI_SCK
4 DVDD3 DVDD3
5 DVSS DVSS
6 PD0
7 PD1
8 PD2
9 TB0OUT LED_SRC_R
10 TB1OUT LED_SRC_G
11 TB2OUT LED_SRC_B
12 TB3OUT LED_NET
13 TB4OUT LED_BT
14 INT0 SW_STDBY
15 INT1 SW_SOURCE
16 INT2 SW_PLAY
17 PD11 VOL_P_RB
18 PD12 VOL_M_RA
19 PD13
20 PD14
21 PD15
22 REGIN1 REGIN1
23 REGOUT1 REGOUT1
24 RVDD3 RVDD3
25 RVSS RVSS
26 REGOUT3 REGOUT3
27 PE0 LED_VOL_B
28 PE1
29 SWV SWV
30 SWDIO SWDIO
31 SWCLK SWCLK
32 DVSS DVSS
33 X1 X1
34 DVSS DVSS
35 X2 X2
36 DVDD3 DVDD3
37 TB5OUT FAN_CTRL
PF0
38 PF1 FAN_LOCK
PF1
39 PF2
40 PM6
41 PM7
42 PM8
43 PM9
44 PM10
45 NMI NMI
46 XT1 XT1
47 MODE MODE
48 XT2 XT2
49 RESET RESET
50 PM11 EEP_N_CS
51 SC6TXD EEP_MOSI
52 SC6RXD EEP_MISO
53 SC6SCK EEP_SCK
54 SC0TXD 232C_DBG_MOSI
Related Power Supply
OFF ON
I/O Logic I/O
NCPU_PON O Low O
NCPU_PON I --- I
NCPU_PON O Low O
AC O Low O
AC O Low O
AC O Low O
AC I --- O
AC I --- O
AC I --- O
AC I --- O
AC I --- O
AC O Low I
AC O Low I
AC O Low I
AC I --- I
AC I --- I
AC O Low O
AC O Low O
AC O Low O
AC I --- O
AC O Low O
AC O Low O
AC O Low O
AC I --- I
AC I --- I
AC O Low O
AC O Low O
AC O Low O
AC O Low O
AC O Low O
AC O Low O
AC I --- O
AC O Low O
AC O Low I
AC O Low O
AC O Low O
Detail of Function
Logic
Data Network microprocessor SPI transmitted data (insurance)
Data Network microprocessor SPI received data
Clock Network microprocessor SPI communication clock
---
---
H act No used
H act No used
H act No used
PWM Source indicator - Red
PWM Source indicator - Green
PWM Source indicator - Blue
PWM Volume indicator - Red
PWM Volume indicator - Green
L act Standby switch
L act Source switch
L act Play/Pause switch
Volume B
Volume A
Low No used
Low No used
Low No used
---
---
---
---
---
PWM Volume indicator - Blue
Low No used
ARM debug
ARM debug
ARM debug
---
---
---
---
---
D/A Cooling fan speed control (WXA-50)
Low No used (WXC-50)
L act Cooling fan lock detection (WXA-50)
--- No used (WXC-50)
Low No used
Low No used
Low No used
Low No used
Low No used
Low No used
---
---
---
---
---
L act EEPROM chip select
As EEPROM becomes active when set to Low, input when AC OFF
(set to P.U. at +3.3M)
Data EEPROM transmitted data
Data EEPROM received data
Clock EEPROM communication clock
Data Debug / Flash write
WXA-50/WXC-50
31