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©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
Increment/decrement DCO FFO configuration.
001h
GPIO controlled output squelch for outputs 0-7.
002h
GPIO controlled output squelch for outputs 8-11.
003h
GPIO controlled TOD trigger input.
004h
GPIO indicator for DPLL lock and holdover states.
005h
GPIO loss of signal (LOS) indicator.
006h
GPIO controlled input disqualification for inputs 0-7.
007h
GPIO controlled input disqualification for inputs 8-15.
008h
GPIO controlled input disqualification for DPLLs.
009h
GPIO controlled input disqualification for system DPLL and disqualification
level.
00Ah
Configure inputs for GPIO manual clock selection.
00Bh
Select DPLLs for GPIO manual clock selection.
00Ch
Select system DPLL for GPIO manual clock selection.
00Dh
GPIO controlled device slave configuration.
00Eh
GPIO alert notification.
00Fh
GPIO_0.GPIO_TOD_NOTIFICATION_CFG
GPIO configuration for DPLL TOD read notification.
010h
GPIO control.