232©2018 Integrated Device Technology, Inc September 12, 2018
8A3xxxx Family Programming Guide
Module: GPIO_0
Configure the GPIO registers.
GPIO_CFG.GPIO_CFG_GBL Bit Field Descriptions
Bit Field Name Field Type Default Value Description
RESERVED N/A - This field must not be modified from the read value
SUPPLY_MODE[1:0] R/W 0 Select GPIO supply rail configuration.
Select GPIO drive voltage.
0 = 1.8 V
1 = 2.5 V/3.3 V
2 = 1.5 V
Table 302: GPIO_0 Register Index
Offset
(Hex)
Register Module Base Address: C8C2h
a
a. This register module is instantiated multiple times. This is the base address of the first instantiation of this module. For later instantiations,
use the appropriate module base address.
Individual Register Name Register Description
000h GPIO_0.GPIO_DCO_INC_DEC Increment/decrement DCO FFO configuration.
001h GPIO_0.GPIO_OUT_CTRL_0 GPIO controlled output squelch for outputs 0-7.
002h GPIO_0.GPIO_OUT_CTRL_1 GPIO controlled output squelch for outputs 8-11.
003h GPIO_0.GPIO_TOD_TRIG GPIO controlled TOD trigger input.
004h GPIO_0.GPIO_DPLL_INDICATOR GPIO indicator for DPLL lock and holdover states.
005h GPIO_0.GPIO_LOS_INDICATOR GPIO loss of signal (LOS) indicator.
006h GPIO_0.GPIO_REF_INPUT_DSQ_0 GPIO controlled input disqualification for inputs 0-7.
007h GPIO_0.GPIO_REF_INPUT_DSQ_1 GPIO controlled input disqualification for inputs 8-15.
008h GPIO_0.GPIO_REF_INPUT_DSQ_2 GPIO controlled input disqualification for DPLLs.
009h GPIO_0.GPIO_REF_INPUT_DSQ_3 GPIO controlled input disqualification for system DPLL and disqualification
level.
00Ah GPIO_0.GPIO_MAN_CLK_SEL_0 Configure inputs for GPIO manual clock selection.
00Bh GPIO_0.GPIO_MAN_CLK_SEL_1 Select DPLLs for GPIO manual clock selection.
00Ch GPIO_0.GPIO_MAN_CLK_SEL_2 Select system DPLL for GPIO manual clock selection.
00Dh GPIO_0.GPIO_SLAVE GPIO controlled device slave configuration.
00Eh GPIO_0.GPIO_ALERT_OUT_CFG GPIO alert notification.
00Fh GPIO_0.GPIO_TOD_NOTIFICATION_CFG GPIO configuration for DPLL TOD read notification.
010h GPIO_0.GPIO_CTRL GPIO control.
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