STR-KM22/KM55/KM77
57
Pin No. Pin Name I/O Description
46 DSDA0 I/O
DDC I2C Data for respective HDMI receiver port. 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.
47 DSCL0 I
DDC I2C Clock for respective HDMI receiver port. 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.
48
CBUS_HPD0
I/O
Hot Plug Detect Output for the respective HDMI receiver port. In MHL mode, these pins serve
as the respective CTRL BUS.
49 R0PWR5V I
5 V Port Detection Input for respective HDMI receiver port. Connect to 5 V signal from HDMI
input connector. These pins require a 10 Ω series resistor, a 5.1 kΩ pull-down resistor, and at
least a 1 μF capacitor to ground.
50 RSVDH - Reserved High
51 SBVCC5V - Local Power from system. This pin requires a 10 Ω series resistor.
52 RSVDL - Reserved Low
53 CSCL I
Local Confi guration/Status I2C Clock. Chip confi guration/status is accessed using this I2C
port. This pin is true open-drain, so it does not pull to ground if power is not supplied.
54 CSDA I/O
Local Confi guration/Status I2C Clock. Chip confi guration/status is accessed using this I2C
port. This pin is true open-drain, so it does not pull to ground if power is not supplied.
55 DSDA1 I/O
DDC I2C Data for respective HDMI receiver port. 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.
56 DSCL1 I
DDC I2C Clock for respective HDMI receiver port. 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.
57 CBUS_HPD1 O
Hot Plug Detect Output for the respective HDMI receiver port. In MHL mode, these pins serve
as the respective CTRL BUS.
58 R1PWR5V I
5 V Port Detection Input for respective HDMI receiver port. Connect to 5 V signal from HDMI
input connector. These pins require a 10 Ω series resistor, a 5.1 kΩ pull-down resistor, and at
least a 1 μF capacitor to ground.
59 DSDA2 I/O
DDC I2C Data for respective HDMI receiver port. 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.
60 DSCL2 I
DDC I2C Clock for respective HDMI receiver port. 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.
61 CBUS_HPD2 O
Hot Plug Detect Output for the respective HDMI receiver port. In MHL mode, these pins serve
as the respective CTRL BUS.
62 R2PWR5V I
5 V Port Detection Input for respective HDMI receiver port. Connect to 5 V signal from HDMI
input connector. These pins require a 10 Ω series resistor, a 5.1 kΩ pull-down resistor, and at
least a 1 μF capacitor to ground.
63 DSDA3 I/O
DDC I2C Data for respective HDMI receiver port. 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.
64 DSCL3 I
DDC I2C Clock for respective HDMI receiver port. 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.
65 CBUS_HPD3 O
Hot Plug Detect Output for the respective HDMI receiver port. In MHL mode, these pins serve
as the respective CTRL BUS.
66 R3PWR5V I
5 V Port Detection Input for respective HDMI receiver port. Connect to 5 V signal from HDMI
input connector. These pins require a 10 Ω series resistor, a 5.1 kΩ pull-down resistor, and at
least a 1 μF capacitor to ground.
67 TXDSDA I/O
DDC Master I2C Data for HDMI transmitter Port. 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.
68
TXDSCL
O
DDC Master I2C Clock for HDMI transmitter Port. 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.
69 TX_HPD I Hot Plug Detect Input for HDMI transmitter port.
70 MHL_CD0_GPIO0 I/O MHL Cable Detect 0 / Programmable GPIO 0.