Yamaha WXA-50, Service Manual, Page: 32 / 76

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