![Geehy SEMICONDUCTOR APM32F405 Series User Manual Download Page 596](http://html1.mh-extra.com/html/geehy-semiconductor/apm32f405-series/apm32f405-series_user-manual_573630596.webp)
www.geehy.com Page 595
Field
Name
R/W
Description
15
TSSMNSEL
R/W
Time Stamp Snapshot for Master Node Select
0: Slave node
1: Master node
17:16
TSCLKNSEL
R/W
Time stamp Clock Node Select
00: Ordinary clock
01: Boundary clock
10: End-to-end transparent clock
11: Point-to-point transparent clock
18
TSSPTPFMACEN
R/W
Time Stamp PTP Frame Filtering MAC Address Enable
When this bit is set and PTP is transmitted directly through
Ethernet, this bit will filter PTP frames by using MAC address.
31:19
Reserved
Table 153 Timestamp Snapshot Message
TSCLKNSEL
TSSMNSEL
TSSMESEL
Snapshot message
0X
Irrelevant
0
SYNC, Follow_Up, Delay_Req, Delay_Resp
1
1
Delay_Req
0
1
SYNC
10
×
0
SYNC
,
Follow_Up
,
Delay_Req
,
Delay_Resp
1
SYNC
,
Follow_Up
11
0
SYNC
,
Follow_Up
,
Delay_Req
,
Delay_Resp,
Pdelay_Req
,
Pdelay_Resp
1
SYNC
,
Pdelay_Req
,
Pdelay_Resp
Note: ×=not applicable
Subsecond increment register (PTP_SUBSECI)
Offset address: 0x704
Reset value: 0x0000 0000
Field
Name
R/W
Description
7:0
STSUBSECI
R/W
System Time Subseconds Increment
It will be added to the system time subsecond value at the time of
each update.
31:8
Reserved
Timestamp high bit register (PTP_TSH)
Offset address: 0x708
Reset value: 0x0000 0000
Field
Name
R/W
Description
31:0
STSEC
R
System Time Second Value
System second time.
Timestamp low bit register (PTP_TSL)
Offset address: 0x70C