Datasheet

FUNCTIONALITY GUIDE – GENERAL PURPOSE INPUTS/OUTPUTS
GPIO1
GPIO
CONTROL
GPIO2
GPIO3
I2C
SETTINGS
GPIO
FUNCTION
ANDMODE
TPS65820
CONFIGURATIONMODES:
1-OUTPUT
2-ADC TRIGGERCONTROL
3-LDC0ENABLE
4-CHARGEVOLTAGESELECTION
CONFIGURATIONMODES:
1-OUTPUT
2-SM1/SM2STANDBY CONTROL INPUT
3-SM1ON/OFFCONTROL INPUT
4-INTERRUPT REQUEST CONTROL INPUT
GENERATES PINHI LO TRANSITIONINT ®
CONFIGURATIONMODES:
1-OUTPUT
2-SM2 CONTROL
3-
4-GENERATES PINHI LO TRANSITION
ON/OFF
INTERRUPT REQUEST CONTROL INPUT
INT ®
TPS65820
SLVS663B – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com
GPIO3 FUNCTIONS
CONFIGURED AS OUTPUT CONFIGURED AS INPUT POWER-UP
DEFAULT
OUTPUT LEVEL Io(max) A/D CONVERSION START TRIGGER
mA
HI or LO at output set 5 Falling or rising edge selected via I
2
C Input, no mode
via I
2
C selected
GPIO2 FUNCTIONS
CONFIGURED AS OUTPUT CONFIGURED AS INPUT POWER-UP
DEFAULT
OUTPUT LEVEL Io(max) HOST INTERRUPT SM2 ENABLE
mA REQUEST
HI or LO at output set 5 Set INT pin to LO via I
2
C GPIO2 level sets SM2 converter ON/OFF operation. Input, no mode
via I
2
C when GPIO2 pin edge is GPIO2 pin level (HI or LO) for ON operation selected
detected. Rising or falling selected via I
2
C
edge detection selected via
I
2
C
The host interrupt request and SM2 enable GPIO2 functions are mutually exclusive,
and they should NOT be configured simultaneously
GPIO1 FUNCTIONS
CONFIGURED AS OUTPUT CONFIGURED AS INPUT POWER-UP
DEFAULT
OUTPUT LEVEL Io(max) HOST INTERRUPT SM1 ENABLE SM1 AND SM2 STANDBY
mA REQUEST CONTROL
HI or LO at output set 5 Set INT pin to LO via I
2
C GPIO1 level sets SM1 GPIO1 level sets SM2 and Input, no mode
via I
2
C when GPIO1 pin edge is converter ON/OFF SM1 converters in standby selected
detected. Rising or falling operation. GPIO2 pin mode. GPIO1 pin level (HI
edge detection set via I
2
C level (HI or LO) for ON or LO) for standby mode
operation set via I
2
C set selected via I
2
C
The host interrupt request, SM1 enable and SM1/SM2 standby control GPIO1
functions are mutually exclusive, and they should NOT be configured simultaneously.
Figure 58. Required External Components, Recommended Values, External Connections
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