Datasheet

PRODUCTPREVIEW

TPS65186

www.ti.com

SLVSB04 –JULY 2011

VCOM 2 (VCOM2)

Address – 0x04h

DATA BIT D7 D6 D5 D4 D3 D2 D1 D0

FIELD NAME ACQ PROG HiZ AVG[1:0] not used not used VCOM[8]

READ/WRITE R/W R/W R/W R/W R/W R/W R/W R/W

RESET VALUE 0 0 0 0 0 1 0 0

FIELD NAME BIT DEFINITION

Kick-back voltage acquisition bit

1 – starts kick-back voltage measurement routine

ACQ

0 – no effect

NOTE: After measurement is complete bit is cleared automatically and measurement result is

reflected in VCOM[8:0] bits.

VCOM programming bit

1 – VCOM[8:0] value is committed to non-volatile memory and becomes new power-up default

PROG

0 – no effect

NOTE: After programming bit is cleared automatically and TPS65186 will enter STANDBY mode.

VCOM HiZ bit

HiZ 1 – VCOM pin is placed into hi-impedance state to allow VCOM measurement

0 – VCOM amplifier is connected to VCOM pin

Number of acquisitions that is averaged to a single kick-back voltage measurement

00 – 1x

01 – 2x

AVG[1:0]

10 – 4x

11 – 8x

NOTE: When the ACQ bit is set, the state machine repeat the A/D conversion of the kick-back

voltage AVD[1:0] times and returns a single, averaged, value to VCOM[8:0]

not used N/A

VCOM voltage adjustment

VCOM = VCOM[8:0] x -10 mV in the range from 0 mV to -5.110 V

0x000h – 0 0000 0000 – -0 mV

0x001h – 0 0000 0001 – -10 mV

0x002h – 0 0000 0010 – -20 mV

VCOM[8:0]

...

0x07Dh - 0 0111 1101 - -1250 mV

...

0x1FEh – 1 1111 1110 – -5100 mV

0x1FFh – 1 1111 1111 – -5110 mV