
NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 646 -
Revision V1.30
NUC97
0
T
E
CHNIC
A
L
RE
F
E
RE
N
CE
MA
NUA
L
EMAC n Time Stamp Control Register (EMACn_TSCTL)
Register
Offset
R/W
Description
Reset Value
EMACn_TSCT
L
n=0,1
E0x100 R/W
EMAC n Time Stamp Control Register
0x0000_0000
31
30
29
28
27
26
25
24
Reserved
23
22
21
20
19
18
17
16
Reserved
15
14
13
12
11
10
9
8
Reserved
7
6
5
4
3
2
1
0
Reserved
TSALMEN
Reserved
TSUPDATE
TSMODE
TSIEN
TSEN
Bits
Description
[31:6]
Reserved
Reserved.
[5]
TSALMEN
Time Stamp Alarm Enable Control
Set this bit high enable Ethernet MAC controller to set TSALS (EMACn_MISTA[28]) high
when EMACn_TSSEC equals to EMACn_ALMSEC and EMACn_TSSUBSEC equals to
EMACn_ALMSUBSEC.
0 = Alarm disabled when EMACn_TSSEC equals to EMACn_ALMSEC and
EMACn_TSSUBSEC equals to EMACn_ALMSUBSEC.
1 = Alarm enabled when EMACn_TSSEC equals to EMACn_ALMSEC and
EMACn_TSSUBSEC equals to EMACn_ALMSUBSEC.
[4]
Reserved
Reserved.
[3]
TSUPDATE
Time Stamp Counter Time Update Enable Control
Set this bit high enables Ethernet MAC controller to add value of register
EMACn_UPDSEC and EMACn_UPDSUBSEC to PTP time stamp counter.
After the add operation finished, Ethernet MAC controller clear this bit to low
automatically.
0 = No action.
1 = EMACn_UPDSEC updated to EMACn_TSSEC and EMACn_UPDSUBSEC updated
to EMACn_TSSUBSEC.
[2]
TSMODE
Time Stamp Fine Update Enable Control
This bit chooses the time stamp counter update mode.
0 = Time stamp counter is in coarse update mode.
1 = Time stamp counter is in fine update mode.