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©2018 Integrated Device Technology, Inc
September 12, 2018
8A3xxxx Family Programming Guide
GPIO_0.GPIO_CTRL
Enable GPIO and configure GPIO mode and direction.
TRIGGER: Writing to this byte triggers a read and activation in hardware of all the bytes of the GPIO module.
TOD_READ_SECONDAR
Y[2]
R/W
0
Select the primary or secondary TOD read registers.
The GPIO level becomes active after the TOD register is updated.
0 = ToD read primary
1 = ToD read secondary
DPLL_TOD[1:0]
R/W
0
DPLL TOD index.
Select the DPLL whose TOD register has been read.
0 = DPLL0
1 = DPLL1
2 = DPLL2
3 = DPLL3
Table 319: GPIO_0.GPIO_CTRL Bit Field Locations and Descriptions
Offset
Address
(Hex)
GPIO_0.GPIO_CTRL Bit Field Locations
D7
D6
D5
D4
D3
D2
D1
D0
010h
GPIO_FUNCTION[7:4]
GPIO_PU_P
D_MODE[3]
GPIO_CONT
ROL_DIR[2]
GPIO_CMOS
_OD_MODE[
1]
GPIO_FUNC
TION_EN[0]
GPIO_0.GPIO_TOD_NOTIFICATION_CFG Bit Field Descriptions
Bit Field Name
Field Type Default Value
Description