Yamaha WXA-50 Service Manual page 35

A B
1
2
Antenna
NETWORK
USB
USB_DP /DM
3
ETH_TX /RX
AP_I2C (SCL /SDA)
IC215
iPod Co-processor
MFI337S3959
Network module
ADT_I2S
NCPU_AUP_I2S
IC216
Input selector
TC74VHC157FT
NCPU_SPI
SEL_PCM/DSD
4
OPT_SPDIF
OPT IN
AD_L/R (*3)
AD1_L/R
+
IC218
AUX IN
Input selector
NJM2752RB2
AIN_SEL
5
6
7
C D
+3.3M
NCPU_PON
DSP_PON
PRY_CTRL
MAIN (1)
*1 Using a resistor array, each signal to DSP/Selector/DAC
• See page 47, 48 →
*2 Using a resistor array, each signal to DIR/Selector WXA-50:
*3 -7.0dB gain correction at hard
• See page 50, 51 →
WXC-50:
※1 抵抗アレイを使用して各信号を DSP/Selector/DAC へ
※2 抵抗アレイを使用して各信号を DIR/Selector へ
※3 ハードで -7.0dB ゲイン補正
DSP_I2C
DIR_SPI
NMS_I2S SPDIF_OUT
DSP_I2S (*2)
IC219
IC217
DSP_I2S-1
DSP
DIR
PCM9211PTR YSS952
DIR_I2S (*1) DIR_I2S-1
ADC CLK
XIN XIN
OUT
39 40
XL201
24.576MHz
IC222
OUTL/R DIR_I2S-3 DIR_I2S-2
IC220
Input selector
DAC
TC7WH157FK
PCM5101APWR
SEL_PCM/DSD
0dB
+
Mute
IC221
MT_BUS
NJM8080RB1
AUX OUT
E F
Audio section Block Diagram
SCHEMATIC DIAGRAM
WXC-50
SCHEMATIC DIAGRAM
R252
IC224
NE5532DR
+6.0dB
DA_L, R
+
Mute
4,33
IC228 MT_PRE
+12.0dB
DAC DA_SW
+
SABRE9006AS Mute
9,29
IC225
MT_PRE
NJM8080RB1
19
XI
XL202
DAC_I2C
40MHz
XO
18
UART1
DA_I2S Debug PN0
PN1
INT0 IC1
SW_STDBY PF11
DSP_I2S-0
Main microprocessor
INT1
SW_SOURCE
TMPM462F15FG
IC223
SW_PLAY INT2 PG1
DIR_I2S-2
Input selector
TB0OUT
LED_SRC_R
TC74VHC1257FT
PG11
LED_SRC_G TB1OUT
LED_SRC_B TB2OUT
TB3OUT I2C0
LED_NET
TB4OUT
LED_BT I2C1
VOL_RB PD11
SEL_DACIN
VOL_RA PD12 SC1
IC2 SC8
SPI
EEPROM 32Kbit
X1 X2
M95320-RMN6TP
33 35
XL1
12MHz
G H
WXC-50
• See page 52 →
MAIN (4)
SCHEMATIC DIAGRAM
IC802 IC801
TC7SET00F TC7SHU04FU
OPT OUT
D_OUT
typ: 2.0Vrms (Vol: 0dB)
MT_N_PRE
COAX OUT
typ: 2.0Vrms (Vol: 0dB)
PRE_L, R
PRE OUT
typ: 2.0Vrms (Vol: 0dB)
SUBWOOFER
typ: 2.0Vrms (Vol: 0dB)
PRE_L, R
Power amplifier and Power module
SEL_PCM/DSD
IEC power 125ASX2
SEL_DACIN
AIN_SEL
SPRY_CTRL
MT_N_PRE
DAC_I2C
DSP_I2C
SPRY_CTRL
DIR_SPI
SPEAKERS
NCPU_SPI typ: 17.4Vrms (Vol: -6dB)
SPRY_CTRL
• See page 49 →
MAIN (5)
SCHEMATIC DIAGRAM
WXA-50
I J
WXA-50/WXC-50
35