PAS6311LT Specification

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PixArt Imaging Inc.

v1.5 2007/10/02

Figure 3.2 Companding curves program by Compand_EnH and Compand_Sel

3.4. Power Down Mode

The PAS6311LT can enter power-down mode by setting register “SW_PwrDn” or by enabling CSB pin.

PAS6311LT supports two power-down modes :

Software Power Down : Setting register “SW_PwrDn” = 0x01 could have power-down effect

upon all the internal block except I2C

Hardware Power Down : Pulling CSB pin to high could have power-down effect upon the

whole chip. The chip will go into standby state.

3.5. Reset Mode

The PAS6311LT can be reset by setting register “SW_Reset” or by enabling Reset pin. PAS6311LT

supports two reset modes :

Software Reset : Set register “SW_Reset” = 0x01 to reset all the I2C

register value only and non-whole chip.

HardwareReset : Pull Reset pin to high to reset the whole chip.

3.6. Automatic Background Compensation (ABC)

By setting register “ABC_en” = 0x01, PAS6311LT can do the black-level calibration automatically. The

purpose of this function supports user to set Dac value by hardware self-calculation to make dark like real

dark.