Datasheet

UCD90124A
www.ti.com SLVSAN8 –JANUARY 2012
Table 4. GPIO Pin Configuration Options
PIN NAME PIN RAIL EN GPI GPO PWM OUT MARGIN PWM
(12 MAX) (8 MAX) (12 MAX) (12 MAX) (10 MAX)
FPWM1/GPIO5 17 X X X X X
FPWM2/GPIO6 18 X X X X X
FPWM3/GPIO7 19 X X X X X
FPWM4/GPIO8 20 X X X X X
FPWM5/GPIO9 21 X X X X X
FPWM6/GPIO10 22 X X X X X
FPWM7/GPIO11 23 X X X X X
FPWM8/GPIO12 24 X X X X X
GPI1/PWM1 31 X X
GPI2/PWM2 32 X X
GPI3/PWM3 42 X X X
GPI4/PWM4 41 X X X
GPIO1 11 X X X
GPIO2 12 X X X
GPIO3 13 X X X
GPIO4 14 X X X
GPIO13 25 X X X
GPIO14 29 X X X
GPIO15 30 X X X
GPIO16 33 X X X
GPIO17 34 X X X
GPIO18 35 X X X
TCK/GPIO19 36 X X X
TDO/GPIO20 37 X X X
TDI/GPIO21 38 X X X
TMS/GPIO22 39 X X X
GPO Control
The GPIOs when configured as outputs can be controlled by PMBus commands or through logic defined in
internal Boolean function blocks. Controlling GPOs by PMBus commands (GPIO_SELECT and GPIO_CONFIG)
can be used to have control over LEDs, enable switches, etc. with the use of an I2C interface. See the
UCD90xxx Sequencer and System Health Controller PMBus Command Reference for details on controlling a
GPO using PMBus commands.
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