Sharp LC-32LE700E Service Manual page 93

Pin No. Pin Name
CEC Pins
50 CEC_A
51 CEC_D
Power and Ground Pins
9,27,64 VCC33
37 MICOM_VCC33
38 SBVCC33
ePad Epad
LC-32/40/46LE700E/RU/S,LU700E/S,LX700E/RU,LC-52LE700E/RU/S
I/O
HDMI compliant CEC I/O used for interfacing to CEC devices. The signal is electrically compliant with CEC
specification. This pin connects to the CEC signal of all HDMI connectors in the system. As an input, the pin
I/O
acts as a LVTTL, Schmitt triggered input and is 5V tolerant. As an output, the pin acts as an NMOS driver
with resistive pull-up. This pin has an internal pull-up resistor.
CEC interface to local system.
I/O This pin is an open drain and requires an external pull-up resister. This pin typically connects to a local CPU
if the CEC functions are performed by the CPU directly, and not the CEC controller inside the device.
- Analog and digital core VCC. Must be supplied at 3.3V
During normal mode, this pin provides 3.3V power to external micro-controller. Maximum output current is
-
30mA. This pin requires 1µ F capacitor to ground.
- 3.3V standby power. If 3.3V standby mode is not used, this pin should be left as not connected.
ePad must be connected to ground. All ground planes, analog and digital, must be tied together to the ePad,
-
which must be connected to ground.
Pin Function
7 – 27