Yamaha WXA-50 Service Manual page 32

WXA-50/WXC-50
Pin Function Name
Port Name
No. (P.C.B.)
55 SC0RXD 232C_DBG_MISO
56 TB9IN0 DIR_N_INT
57 SC1TXD DIR_MOSI
58 SC1RXD DIR_MISO
59 SC1SCK DIR_SCK
60 DVDD3 DVDD3
61 DVSS DVSS
62 PF9 DIR_N_CS
63 PF10 DIR_N_RST
64 PF11 AOUT_SEL
65 INT8/RXIN0 REM_IN1
66 PF13 AMP_EN
67 PE5 AMP_BTL
68 PE6 DSP_PON
69 PE7
70 PE8
71 DVDD3 DVDD3
72 DVSS DVSS
73 INTA ACPWR_DET
74 PG0 +3.3S_PON
75 PG1 SPRY_CTRL
76 PG2 -
77 PG3 DAC_RST
78 I2C0SDA DAC_SDA
79 I2C0SCL DAC_SCL
80 I2C1SDA DSP_SDA
81 I2C1SCL DSP_SCL
82 PG8 DSP_N_RST
83 PG9 -
84 PG10 MT_N_PRE
85 PG11 MT_N_BUS
86 PN0 SEL_PCM/DSD
87 PN1 SEL_DACIN
88 AVDD3 AVDD3
89 VREFH VREFH
90 AVSS AVSS
91 AIN0 PRT_PS1
92 AIN1 PRT_PS2
PH1
93 AIN2 AMP_OLV
PH2
94 AIN3 PRT_USB_VBUS
95 AIN4 THM_MON
96 AIN5 MODE
97 AIN6 HWDET
98 AIN7 DEST
99 AIN8 MODEL
100 PH9
101 PH10
102 PH11
103 PH12
104 PH13
105 PH14
106 PJ0
107 PJ1
32
Related Power Supply
OFF ON
I/O Logic I/O
AC O Low I
DSP_PON O Low I
DSP_PON O Low O
DSP_PON I --- I
DSP_PON O Low O
DSP_PON O Low O
DSP_PON O Low O
PRY O Low O
AC O Low I
PRY O Low I
PRY O Low O
DSP_PON O Low O
AC O Low O
AC O Low O
AC I --- I
+3.3S_PON O Low O
PRY O Low O
AC O Low O
PRY O Low O
PRY O Low I/O
PRY O Low O
DSP_PON O Low I/O
DSP_PON O Low O
DSP_PON O Low O
AC O Low O
+3.3S_PON O Low O
+3.3S_PON O Low O
DSP_PON O Low O L= PCM PCM/DSD circuit selector
H= DSD
DSP_PON O Low O L= DSP DAC input selector
H= DIR
+3.3S_PON I --- I
+3.3S_PON I --- I
AC I --- I
PRY I --- I
AC I --- I
AC I --- I
AC I --- I
+3.3S_PON I --- I
+3.3S_PON I --- I
+3.3S_PON I --- I
+3.3S_PON 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 O Low O
AC O Low O
Detail of Function
Logic
Data Debug / Flash write
L act Interrupt from DIR
Data DIR transmitted data
Data DIR received data
Clock DIR communication clock
---
---
L act DIR chip select
L act DIR reset
H/L Analog output selector (Low: AUX input, High: Delivery DAC output)
L act Remote control pulse input 1
H act Power amplifier enable detection
Detection starts 3.5 sec after PRY is set to High.
H act Power amplifier BTL setting (Usually: Low, when set to BTL: High)
H act DSP power supply control
Low No used
Low No used
---
---
L act AC power detection
H act +3.3S power supply
H act SP relay control
Low No used
H act DAC reset
Data DAC I2C data
Clock DAC I2C clock
Data DSP I2C data
Clock DSP I2C clock
L act DSP reset
Low No used
L act Mute (Preout/SP out)
L act Mute bus out (AUX out)
---
---
---
A/D Power supply protection 1
A/D Power supply protection 2 (WXA-50)
--- No used (WXC-50)
A/D Amplifier output level detection (WXA-50)
--- No used (WXC-50)
A/D USB VBUS voltage detection
A/D Temperature detection
A/D Special mode discrimination
A/D Hardware detection
A/D Destination discrimination
A/D Model discrimination
Low No used
Low No used
Low No used
Low No used
Low No used
Low No used
Low No used
Low No used