Yamaha HTR-6295, Service Manual

Page: 84 / 163

84
RX-V2065/HTR-6295
RX-V2065/HTR-6295
Pin
No.
Port Name
Function
Name
(P.C.B.)
I/O
Detail of Function
P
o
w
erOn
Stb
y Thr
h
Standb
y
Stb
y Sleep
Sleep [MCU] E8a,
ICP
38
TxD1
232C_MOSI SO SO SO O [O]
RS232C data output
Pull up at 100 k-ohms
P67/TXD1/SDA1/
SRXD1
TxD1 TXD SO E8a, ICP (In-Circuit Programmer) data output
39
Vcc1
Vcc1 MCU MCU MCU MCU [MCU] Microprocessor power supply
Vcc1
40
RxD1
232C_MISO SI SI SI I [I]
RS232C data input
Pull up at 100 k-ohms
P66/RXD1/SCL1/
STXD1
RxD1 RXD SI E8a, ICP (In-Circuit Programmer) data input
41
Vss
Vss All MCU MCU MCU [MCU] Microprocessor GND
Vss
42
P65
232C_RTS SO SO SO O [O] RS232C CTS input
P65/CLK1
CLK1 E8a_SCLK SI
E8a, ICP (In-Circuit Programmer) clock input
Pull up at 100 k-ohms
43
CTS1
232C_CTS SI SI SI I [I]
RS232C CTS input
Pull down at 100 k-ohms
P64/CTS1/RTS1/
SS1/OUTC21/
ISCLK2
RTS1 E8a_BUSY SO E8a, ICP (In-Circuit Programmer) BUSY output
44
SDA0
HDMI_SDA SIO SIO O O [O]
HDMI RX/TX, Video Enc/Dec I2C SCL output
Pull up at HDMI block
HDMI RX/TX: 5V tolerant
(400 kHz device)
P63/TXD0/SDA0/
SRXD0/IrDAout
45
SCL0
HDMI_SCL SIO SIO O O [O]
HDMI RX/TX, Video Enc/Dec I2C SDA input/output
Pull up at HDMI block
HDMI RX/TX: 5V tolerant
(400 kHz device)
P62/RXD0/SCL0/
STXD0/IrDAin
46
P61
232C_PON O O O O [O]
RS232C driver power supply ON/OFF control
H: ON, L: OFF
Default at standby
U, C models: H (232C ON)
R, T, K, A, B, G, E, F, L models: L
P61/CLK0/RTP01
47
P60
CXB1442_CE O O O O [O]
FRONT HDMI EQ chip enable output
Pull down at FRONT HDMI block
H: enable
When CEC microprocessor is used, it substitutes it with HDMI_PON (Pin
60)
P60/CTS0/RTS0/
SS0/RTP00
48
P137
HEQ_N_RST O O O O [O] O
HDMI INPUT EQ reset output
Pull up at HDMI EQ block
L: Reset
When CEC microprocessor is used, it substitutes it with HDMI_PON (Pin
60)
P137/OUTC27
49
ISCLK2
REM_CLK SO O O O [O]
Clock output for remote control code generation
No connection destination
P136/OUTC21/
ISCLK2
50
P135
HTX_N_RST2 O O O O [O]
HDMI TX (OUT2) reset output
Pull down at HDMI block
L: Reset
P135/OUTC22/
ISRXD2/IEin
51
ISTXD2
REM_OUT SO O O O [O]
SCENE select
DVD control remote control code output
P134/OUTC20/
ISTXD2/Ieout
52
P57
HRX_N_RST O O O O [O]
HDMI TX reset output
Pull down at HDMI block
L: Reset
P57/RDY
53
P56
HTX_N_RST O O O O [O]
HDMI TX (OUT1) reset output
Pull down at HDMI block
L: Reset
P56/ALE
54
P55
E8a_N_EPM I I I I [I]
E8a writing mode enable input
10 k-ohms pull down P55/HOLD
55
P54
HTX_AUSEL O O O O [O]
P54/HLDA/ALE