fido2100 3-Port Industrial Ethernet DLR Switch with IEEE1588
Data Sheet
April 10, 2013
The Port 1 Beacon Receive Timestamp register is comprised of two 16- bit registers. It
contains a snapshot of the Free Running Timer when last Ring beacon was received on
Port 1 with the Ring Supervisor MAC ID register source address. The two registers may
be read in any order. However, since the registers may be updated between two reads
when a new beacon is received, care should be taken to read the registers multiple times
and only consider it as valid when two successive reads produce the same result.
9.2.28 Port 2 Beacon Receive Timestamp Register
Mnemonic
type offset bits 15
0x78
Power-up Defaults
14
13
12
11
10
9
8
7
6
5
0
5
0
4
0
4
0
3
0
3
0
2
0
2
0
1
0
1
0
0
0
0
0
P2BcnTS_Lo
R
BeaconTimestamp2[15:0]
0
0
0
0
0
0
0
9
0
8
0
7
0
6
Mnemonic
type offset bits 15
0x7A
Power-up Defaults
14
0
13
0
12
0
11
0
10
0
P2BcnTS_Hi
R
BeaconTimestamp2[31:16]
0
0
0
0
0
The Port 2 Beacon Receive Timestamp register is comprised of two 16- bit registers. It
contains a snapshot of the Free Running Timer when the last ring beacon was received on
Port 2 with the Ring Supervisor MAC ID register source address. The two registers may
be read in any order. However, since the registers may be updated between two reads
when a new beacon is received, care should be taken to read the registers multiple times
and only consider it as valid when two successive reads produce the same result.
9.2.29 Port 1 Neighbor Check Request/Sign On Receive Source ID Register
Mnemonic
type offset bits 15
0x7C
14
13
12
11
10
9
8
7
6
5
4
3
0
3
0
3
0
2
0
2
0
2
0
1
0
1
0
1
0
0
0
0
0
0
0
P1NChkSId_Lo_Lo
R
Port1_Neighbor_Check_Req_Recv_SrcID[15:0]
Power-up Defaults
0
0
0
0
0
0
0
9
0
8
0
7
0
6
0
5
0
4
Mnemonic
type offset bits 15
0x7E
14
0
13
0
12
0
11
10
P1NChkSId_Lo_Hi
R
Port1_Neighbor_Check_Req_Recv_SrcID[31:16]
Power-up Defaults
0
0
0
0
9
0
8
0
7
0
6
0
5
0
4
Mnemonic
type offset bits 15
0x80
14
0
13
0
12
0
11
10
P1NChkSId_Hi_Lo
R
Port1_Neighbor_Check_Req_Recv_SrcID[47:32]
Power-up Defaults
0
0
0
0
0
0
0
0
0
73
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