SLLSFI6A july 2022 – july 2023 TDP1204
PRODUCTION DATA
The TDP1204 has two low power states: Power Down and Standby. Table 8-21 lists both lower power states. Power down is entered when HPD_IN is low for tHPD_PWRDOWN or in I2C if PD_EN bit is set. Power down is also entered when the EN pin is low. The TDP1204 will exit power down to the standby state when HPD_IN is high for tHPD_STANDBY.
The TDP1204 implements a two stage standby power process when HPD_IN is high.
Stage 1: if there is no signal (electrical idle) on the IN_CLK lane, and if HDMI 1.4/2.0 or IN_D2 if HDMI 2.1, then the TDP1204 will enter Standby State within tSTANDBY_ENTRY.
Stage 2: if a signal is detected which last longer than tSIGDET_DB, then TDP1204 will declare a valid signal and exit standby within tSTANDY_EXIT.
The TDP1204 will exit standby state and immediately enter active state if LTP1, LTP2, LTP3, or LTP4 is snooped while monitoring status flags at SCDCS offset 41h or 42h.
The TDP1204 will exit normal operation and return to the standby state within tSTANDBY_ENTRY anytime electrical idle is detected.
INPUTS | STATUS | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
EN pin | HPD_IN pin | STANDBY_DISABLE register | HPD_PWRDWN_DISABLE register | PD_EN register | HDMI 1.4/2.0: IN_CLK pin HDMI 2.1: IN_D2 pins | HPD_OUT pin | IN_Dx pins | SDA/SCL | OUT_Dx OUT_CLK | DDC | State |
L | X | X | X | X | X | High-Z | High-Z | Disabled | High-Z | Disabled | Power Down State |
H | L | X | 0 | 0 | X | L | High-Z | Active | High-Z | Disabled | Power Down State |
H | X | X | X | 1 | X | L | High-Z | Active | High-Z | Disabled | Power Down State |
H | H | 1 | X | 0 | X | HPD_IN | All RX Active | Active | TX Active | Active | Normal operation |
H | X | 1 | 1 | 0 | X | H | All RX Active | Active | TX Active | Active | Normal operation |
H | H | 0 | X | 0 | No signal | HPD_IN | HDMI 1.4/2.0: IN_CLK Active HDMI 2.1: IN_D2 Active | Active | High-Z | Active | Standby State (Squelch waiting) |
H | H | 0 | X | 0 | Valid signal detected | HPD_IN | All RX Active | Active | TX Active | Active | Normal operation |
H | X | 0 | 1 | 0 | No signal | H | HDMI 1.4/2.0: IN_CLK Active HDMI 2.1: IN_D2 Active | Active | High-Z | Active | Standby State (Squelch waiting) |
H | X | 0 | 1 | 0 | Valid signal detected | H | All RX Active | Active | TX Active | Active | Normal operation |