CHAPTER 21:Ethernet MAC
S6J3200 Series Hardware Manual Document Number: 002-04852 Rev. *G
751
4.94.
PTP Event Frame Transmitted Nanoseconds Register
Description of PTP Event Frame Transmitted Nanoseconds register is shown.
REGISTER_NAME
ETHERNETn_tsu_ptp_tx_nsec
OFFSET
0x1E4
ACCESS_SIZE
W
MULTIPLE
NUMERIC_TYPE
OTHER
BIT_OFFSET
31
30
29
28
27
26
25
24
BIT_NAME
Reserved
timer[29:24]
ACCESS_TYPE
R0,WX
R,WX
PROT_TYPE
Wp
INITIAL_VALUE
0x0
0x00
BIT_OFFSET
23
22
21
20
19
18
17
16
BIT_NAME
timer[23:16]
ACCESS_TYPE
R,WX
PROT_TYPE
Wp
INITIAL_VALUE
0x00
BIT_OFFSET
15
14
13
12
11
10
9
8
BIT_NAME
timer[15:8]
ACCESS_TYPE
R,WX
PROT_TYPE
Wp
INITIAL_VALUE
0x00
BIT_OFFSET
7
6
5
4
3
2
1
0
BIT_NAME
timer[7:0]
ACCESS_TYPE
R,WX
PROT_TYPE
Wp
INITIAL_VALUE
0x00
[bit31:30] Reserved
Always read "0". Writing has no effect.
[bit29:0] timer: PTP Event Frame Transmitted Nanoseconds
The register is updated with the value that the IEEE 1588 Timer Nanoseconds register held when the
SFD of a PTP transmit primary event crosses the MII interface. The actual update occurs when the
Ethernet MAC recognizes the frame as a PTP Sync or Delay_Req frame. An interrupt is issued when
the register is updated.
Содержание S6J3200 Series
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