Yamaha YSP-4300, Service Manual

Page: 86 / 171

System Switching Pins
Pin
No.
Function Name Type I/O Detail of Function
76 DSDA0
80 DSDA1 DDC I2C data for respective HDMI receiver port.
84 DSDA2
LVTTL Schmitt Open
drain 5 V tolerant
Input/Output
88 DSDA3
These signals are true open drain, and do not pull to ground when power is not
applied to the device. These pins require an external pull-up resistor.
92 DSDA4
97 DSDA5
DDC I2C data for VGA port.
73 DSDA6(VGA)
LVTTL Schmitt Open
drain 5 V tolerant
Input/Output
This signal is true open drain, and does not pull to ground when power is not
applied to the device. This pin requires an external pull-up resistor.
77 DSCL0
81 DSCL1 DDC I2C clock for respective HDMI receiver port.
85 DSCL2
LVTTL Schmitt Open
drain 5 V tolerant
Input
89 DSCL3
These signals are true open drain, and do not pull to ground when power is not
applied to the device. These pins require an external pull-up resistor.
93 DSCL4
98 DSCL5
DDC I2C clock for VGA port.
74 DSCL6(VGA)
LVTTL Schmitt Open
drain 5 V tolerant
Input
This signal is true open drain, and does not pull to ground when power is not
applied to the device. This pin requires an external pull-up resistor.
DDC master I2C data for HDMI transmitter Port 0.
106 TXDSDA0
LVTTL Schmitt Open
drain 5 V tolerant
Input/Output
This signal is true open drain, and does not pull to ground when power is not
applied to the device. This pin requires an external pull-up resistor.
DDC master I2C data for HDMI transmitter Port 1.
109 TXDSDA1
LVTTL Schmitt Open
drain 5 V tolerant
Input/Output
This signal is true open drain, and does not pull to ground when power is not
applied to the device. This pin requires an external pull-up resistor.
DDC master I2C clock for HDMI transmitter Port 0.
107 TXDSCL0
LVTTL Schmitt Open
drain 5 V tolerant
Input/Output
This signal is true open drain, and does not pull to ground when power is not
applied to the device. This pin requires an external pull-up resistor.
DDC master I2C clock for HDMI transmitter Port 1.
110 TXDSCL1
LVTTL Schmitt Open
drain 5 V tolerant
Input/Output
This signal is true open drain, and does not pull to ground when power is not
applied to the device. This pin requires an external pull-up resistor.
79 R0PWR5V
83 R1PWR5V 5 V port detection input for respective HDMI receiver port.
87 R2PWR5V
Power Input
Connect to 5 V signal from HDMI input connector. These pins require a 10 ohms
series resistor, a 5.1 k-ohms pull down resistor, and at least a 1 μF capacitor to
ground.
91 R3PWR5V
95 R4PWR5V
100 R5PWR5V
78 CBUS_HPD0
82 CBUS_HPD1
86 CBUS_HPD2
LVTTL 1.5 mA 5 V
tolerant Analog
Input/Output
Hot plug detect output for the respective HDMI receiver port.
90 CBUS_HPD3 In MHL mode, these pins serve as the respective CTRL bus.
94 CBUS_HPD4
99 CBUS_HPD5
105 TX_HPD0 LVTTL 5 V tolerant Input Hot plug detect input for HDMI transmitter Port 0.
108 TX_HPD1 LVTTL 5 V tolerant Input Hot plug detect input for HDMI transmitter Port 1.
103 MHL_CD0/GPIO0 LVTTL Input/Output MHL cable detect 0/programmable GPIO 0.
104 MHL_CD1/GPIO1 LVTTL Input/Output MHL cable detect 1/programmable GPIO 1.
86
YSP-CU4300/YSP-CU3300/NS-WSW160
Y
SP-CU430
0/Y
SP-CU330
0/
NS-WSW1
60
DRAFT