ZHCSFY1F December 2016 – April 2024 TDP158
PRODUCTION DATA
A 1% precision resistor, connected from VSADJ pin to ground is recommended to allow the differential output swing to comply with TMDS signal levels. The differential output driver provides a typical 10-mA current sink capability, which provides a typical 500mV voltage drop across a 50Ω termination resistor.
Referring to Figure 7-5, if VCC (TDP158 supply) and AVCC (sink termination supply) are both powered, the TMDS output signals are high impedance when OE = low. Both supplies being active is the normal operating condition. A total of approximately 33-mW of power is consumed by the terminations independent of the OE logical selection. When AVCC is powered on, normal operation (OE controls output impedance) is resumed. When the power source of the device is off and the power source to termination is on, the IO(off), output leakage current, specification ensures the leakage current is limited 45-μA or less. The clock and data lanes VOD can be changed through I2C reg0Ch[7:2], VSWING_DATA and VSWING_CLK.