Yamaha YSP-4100 Service Manual page 63

Pin Port
Control Interrupt Timer
No. Name
TA0OUT/
37 P70
RTP02
38 P67
39 VCC1
40 P66
41 VSS
42 P65
43 P64
44 P63
45 P62
46 P61 RTP01
47 P60 RTP00
48 P137
49 P136
50 P135
51 P134
52 P57
53 P56
54 P55
55 P54
56 P133
57 VSS
58 P132
59 VCC2
60 P131
61 P130
62 P53
63 P52
64 P51
65 P50
66 P127
Function
UART Analog I/O
Name
TxD2/
SDA2/ SDA_100 SDA
SRxD2
TxD1/
232C_
SDA1/ Tx
MOSI
SRxD1
Vcc1 ---
RxD1/
232C_
SCL1/ Rx
MISO
STxD1
Vss ---
232C_
CLK1 S-CLK
RTS
IN
CTS1/ 232C_
OUT
RTS1/SS1 CTS
OUT
TxD0/
SDA0/
SDA_400 SDA
SRxD0/
IrDAOUT
RxD0/
SCL0/
SCL_400 SCL
STxD0/
IrDAIN
CLK0 OUT
CTS0/ DSP2_N_
OUT
RTS0/SS0 CS
DSP1_
OUT
FMT
OUT
HTX-PON OUT
OUT
HRX_N_
OUT
RST
HTX_N_
OUT
RST
IN
HTX_
OUT
AUSEL
HTX_
OUT
VSEL
Vss ---
ABT_N_
OUT
RST
Vcc ---
HDMI_
OUT
PON1
OSD_N_
OUT
RST
DSP2_N_
OUT
RST
WFDAC_
N_MUTE/
OUT
DIT1_N_
CS
D5_N_
MUTE/3DIR_ OUT
N_CS
IN
OSD_
IN
BUSY
Detail of Function
I2C SDA input/output (100kHz device)
Usually RS-232C asynchronous communication data output
Data transmission terminal for AF220
E8a, ICP (In-circuit Programmer) data output
Power supply +3.3V
Usually RS-232C asynchronous communication data input
Data transmission terminal for AF220
E8a, ICP (In-circuit Programmer) data input
GND
Usually RS-232C asynchronous communication RTS output
Clock input for AF220
E8a, ICP (In-circuit Programmer) clock input
Usually RS-232C asynchronous communication CTS input
BUSY output for AF220
E8a, ICP (In-circuit Programmer) BUSY output
HDMI RX/TX, Video Enc/Dec, CEC microprocessor I2C SDA output (400kHz device)
HDMI RX/TX, Video Enc/Dec, CEC microprocessor I2C SCL input/output (400kHz
device)
RS232C driver power supply ON/OFF control
DA70Y (latter stage) chip select
DA70Y (former stage) FULL MUTE output
Vx65: Clock output for remote control code formation
ON/OFF control of 5V supply to sink equipment (HDMI TX power supply)
Vx65: Remote control code output
HDMI RX reset output
HDMI TX reset output
E8a writing mode enable input
* Connect to GND via resistor (for FLASH writing)
HDMI Audio output selection
HDMI Video output selection
GND
Video I/P & Scaler IC reset
Power supply +3.3V
HDMI power supply ON/OFF control (Downstream: HDMI circuit board side)
OSD reset Vx65: Video power supply ON/OFF control (setting based on specifications
of PureDirect)
DA70Y (latter stage) reset
Woofer MUTE control (YSP-4100) (Old DAC-1 Mute)
D-5 Mute (YSP-4100)
E8a chip enable input
Connect to Vcc via resistor
OSD BUSY in
YSP-4100/YSP-5100
[Pull-up resistor required N-OD]
Pulled up by 100k-ohms
Pulled up by 100k-ohms
Pulled up by 100k-ohms
* Pull down required
Pulled down by 100k-ohms
[H: ON L: OFF]
[H: Mute]
Connected to nowhere
[H: ON L: OFF]
[L: Reset]
[L: Reset]
* Pull down required (10k-ohms)
[L: ADC output H: HDMI RX output]
[L: Decoder output H: HDMI RX output]
[L: Reset]
[H: ON L: OFF]
[H: ON L: OFF]
[L: MUTE]
[L: MUTE]
* Pull up required
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