Yamaha RX-V1900 Service Manual page 74

RX-V1900/HTR-6290/DSP-AX1900
No. Port Name
1 P96/SDA4
2 P95/CLK4
3 P94/DA1/TB4in
4 P93/TB3in
5 P92/SDA3
6 P91/SCL3
7 P90/TB0in
8 P146
9 P145
10 P144/INT6
11 P143
12 P142
13 P141
14 P140
15 BYTE
16 CNVSS
17 P87
18 P86
19 /RESET
20 XOUT
21 Vss
22 XIN
23 Vcc1
24 P85/NMI
25 P84/INT2
26 P83/INT1
27 P82/INT0
28 P81/TA4in
29 P80/TA4out
30 P77/TA3in
31 P76/TA3out
32 P75/TA2in
33 P74/TA2out
34 P73/TA1in
35 P72/CLK2
36 P71/SCL2
37 P70/SDA2
38 P67/TxD1
39 Vcc1
40 P66/RxD1
41 Vss
42 P65/CLK1
43 P64/CTS1
44 P63/TxD0
45 P62/RxD0
46 P61/CLK0
47 P60/CTS0/RTS0
48 P137
49 P136
50 P135
51 P134
52 P57/RDY
53 P56/ALE/RAS
54 P55/HOLD
55 P54/HLDA/ALE
56 P133
57 Vss
58 P132
59 Vcc2
60 P131
74
Function Name I/O
SDAL SIO I/O signal of I2C SDA (for 100kHz device)
NC O
LPFCTL O LPF fs select
P93 O YGV VS output, spare
SDAH SIO I/O signal of I2C SDA (for HDMI device)
SCLH SO Output signal of I2C SCL (for HDMI device)
P90 HiZ YGV brightness output, spare
Test Point O Monitor terminal for development
Test Point O Monitor terminal for development
Test Point O Monitor terminal for development
HDMI SEL0 O HDMI_INPUT Select (Bit0)
HDMI SEL1 O HDMI_INPUT Select (Bit1)
HDMI SEL2 O HDMI_INPUT Select (Bit2)
HDMI_SEL O EEPROM (RxINPUT) select
BYTE MCU Data bus width setting: Set to 16bit = LOW
CNVSS MCU Processor mode: Set to HI
NC O
BOOT I YDC boot signal input
(/EN232) O 232C line open request (Video -> Main)
/RES MCU Reset signal input
XOUT MCU Ceramic oscillator 10Mhz
GND MCU GND
XIN MCU Ceramic oscillator 10Mhz
5.0V MCU 5.0V
NMI I
/REM IRQ Connection to the remote control light receiving section enabled
/INTAD IRQ Interrupt signal from ADV7401
/INT Rx IRQ HDMI Rx interrupt
FVS I VSYNC frequency measurement, spare
Test J1-1 I Start-up option forced log output
Test J1-2 I Start-up option HDCP ON/OFF
Test J1-3 I Start-up option mobile mode
HDMINT O HDMI interrupt request
232PWR I 232C Transceiver shutdown detect input
/ICEX O Reset signal I/O for expander
MREQ O Main microprocessor I/F REQ output signal
SCLV SO Output signal of I2C SCL (for video device)
SDAV SIO I/O signal of I2C SDA (for Video device)
Serial I/F for YDC writing
TXD1 SO
Serial I/F for Debugging/writing
MCU 5.0V
Serial I/F for YDC writing
RXD1 SI
Serial I/F for Debugging/writing
MCU GND
RTS1 O Serial I/F for YDC/RS232C writing
CTS1 I Serial I/F for YDC/RS232C writing
VtoM SO Main microprocessor I/F SPI
MtoV SI Main microprocessor I/F SPI
CLKH SI Main microprocessor I/F SPI
MRES O Main microprocessor I/F RES output signal
/RES_Rx O Reset HDMI Rx only
TMDS_ENB O TMDS pull-up ON/OFF (CE of equalizer IC)
EDID_ENB O Whether accessible to EEPROM or not
/AUPS O Video passage to HDMI (scaler output) ON/OFF
/RDY I YVG/WAIT signal input
NC O
NC I
NC O
PSENB O HDMI Tx power signal enable
GND MCU GND
DDCENB O HDMI DDC enable control
3.3V MCU 3.3V
AUPAUD O Audio passage to HDMI, output select
Detail of Function