275
©2018 Integrated Device Technology, Inc
September 12, 2018
8A3xxxx Family Programming Guide
TOD_READ_SECONDARY_0.TOD_READ_SECONDARY
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_READ_SECONDARY_0.TOD_READ_SECONDARY_COUNTER
This counter increments to indicate completion.
Table 368: TOD_READ_SECONDARY_0.TOD_READ_SECONDARY Bit Field Locations and Descriptions
Offset
Address
(Hex)
TOD_READ_SECONDARY_0.TOD_READ_SECONDARY 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]
004h
NS[39:32]
005h
SECONDS[47:40]
006h
SECONDS[55:48]
007h
SECONDS[63:56]
008h
SECONDS[71:64]
009h
SECONDS[79:72]
00Ah
SECONDS[87:80]
TOD_READ_SECONDARY_0.TOD_READ_SECONDARY Bit Field Descriptions
Bit Field Name
Field Type Default Value
Description
SECONDS[87:40]
R/O
0
Seconds part of TOD.
Unsigned 48-bit value in seconds.
NS[39:8]
R/O
0
Nanoseconds part of TOD.
Unsigned 32-bit value in nanoseconds.
The maximum value is 0x3b9ac9ff = 999,999,999 ns.
SUBNS[7:0]
R/O
0
Sub-nanoseconds part of TOD.
Unsigned 8-bit value in units of 1/256 nanoseconds.
Table 369: TOD_READ_SECONDARY_0.TOD_READ_SECONDARY_COUNTER Bit Field Locations and
Descriptions
Offset
Address
(Hex)
TOD_READ_SECONDARY_0.TOD_READ_SECONDARY_COUNTER Bit Field Locations
D7
D6
D5
D4
D3
D2
D1
D0
00Bh
READ_COUNTER[7:0]