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©2018 Integrated Device Technology, Inc
September 12, 2018
8A3xxxx Family Programming Guide
Module: TOD_READ_PRIMARY_0
Configure the TOD read primary registers
TOD_READ_PRIMARY_0.TOD_READ_PRIMARY
The maximum frequency of the clock driving the TOD accumulator is 1 GHz for DPLL 0 and 1, and 770 MHz for DPLL 2 and 3 .
TOD_WRITE_0.TOD_WRITE_CMD Bit Field Descriptions
Bit Field Name
Field Type Default Value
Description
RESERVED
N/A
-
This field must not be modified from the read value
TOD_WRITE_SELECTION
[3:0]
R/W
0
TOD write trigger selection.
0 = disabled, no trigger
1 = immediate
2 = selected reference clock input
3 = selected PWM decoder's 1 PPS output
4 = reserved
5 = feedback from FOD
6 = selected GPIO
Table 362: TOD_READ_PRIMARY_0 Register Index
Offset
(Hex)
Register Module Base Address: CC40h
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
TOD_READ_PRIMARY_0.TOD_READ_PRIMA
RY
TOD read primary registers.
00Bh
TOD_READ_PRIMARY_0.TOD_READ_PRIMA
RY_COUNTER
Indicates when TOD read is completed.
00Ch
TOD_READ_PRIMARY_0.TOD_READ_PRIMA
RY_SEL_CFG_0
TOD read trigger configuration.
00Dh
RESERVED
This register must not be modified from the read value
00Eh
TOD_READ_PRIMARY_0.TOD_READ_PRIMA
RY_CMD
TOD read trigger selection.
Table 363: TOD_READ_PRIMARY_0.TOD_READ_PRIMARY Bit Field Locations and Descriptions
Offset
Address
(Hex)
TOD_READ_PRIMARY_0.TOD_READ_PRIMARY Bit Field Locations
D7
D6
D5
D4
D3
D2
D1
D0
000h
SUBNS[7:0]
001h
NS[15:8]
002h
NS[23:16]
003h
NS[31:24]