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STV2001 Datasheet(PDF) 36 Page - STMicroelectronics |
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STV2001 Datasheet(HTML) 36 Page - STMicroelectronics |
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36 / 46 page ![]() STV2001 36/46 Table 1: Logic Table Note 1 NA= Not applicable. Note 2 I2C video=on will be reset by Low Vcc. STAND-BY MODE AND PROTECTIONS 14.5 - GENERAL CONSIDERATIONS 14.5.1 - POR (Power On Reset) - Subad. 11-D8 POR is activated on 5 V with default values for each adjustment and in addition video off (see 1.3). It can be activated via the I2C command. 14.5.2 - Supply Voltage Threshold. Two built-in thresholds (see figure 21) are used to enter the following modes: • PDI mode: – Activated for Vcc < 8.5V – Video off (see 1.13) • PD2 mode: – Activated for Vcc < 5.0V – Video off (see 1.13) – HOUT and VOUT disabled 14.5.3 - Video Off (I2C control) - Subad. 00-D8 Activates blanking of the 3 video output stages. During this time the outputs are switched to VDC level, regardless of the presence of Hsync or Hfly- back. Activation time is inferior to 1 µs. This also activates the blanking output at pin 18 into a high level state close to 9.5V as long as “video off” is activated. When the device enters the “Video-off” mode, voltage on pin 8 is 8V. 14.5.4 - Vertical Output Off This command will switch off output VAMP. The vertical output swing is reduced to 0V. 14.5.5 - X-Ray, Set Operation - Subad. 09-D8 When ABL voltage is below 1 V threshold, Xray latch will be activated. This I2C command will reset the Xray latch. Activation time below 100ms. Conditions Hout Vout Video-off Low Power Vcc at 0 to 6.9 V (PD2 mode) no no video-off NA (1) Vcc at 6.9 V to 8.5 V (PD1 mode) yes yes video-off NA(1) Hlock/unlock detection = unlock yes yes video-off no Video ABL input pin < 1 V no no video-off no 5 V POR or I2C POR=1, (default=0) yes yes video-off no I2C Hout on/off, (default=1=on) on/off yes on/off no I2C Vout on/off, (default=1=on) yes on/off on/off no I2C Video on/off, (default=0=video-off) yes yes on/off no Vcc at >8.5 V yes yes video-on (2)NA (1) Vcc at >8.5 V, I 2C video=1=on yes yes video-on (2)no |
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