WG82574L S LBA8 Intel, WG82574L S LBA8 Datasheet - Page 181

• Manufacturer Part Number: WG82574L S LBA8
• Manufacturer: Intel

Specifications of WG82574L S LBA8

• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: 0C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 64
• Lead Free Status / RoHS Status: Compliant

Inline Functions—82574 GbE Controller
Figure 38.
Sync Flow and Offset Calculation
The hardware responsibilities are:
The software is responsible on:
1. Identify the packets that require time stamping.
2. Timestamp the packets on both Rx and Tx paths.
3. Store the time stamp value for software.
4. Keep the system time in hardware and give a time adjustment service to the
1. BMC protocol execution which means defining the node state (master or slave) and
2. Generate PTP packets, consume PTP packets.
3. Calculate the time offset and adjust the system time using hardware mechanism
Timestamp
Timestamp
Master
software.
selection of the master clock if in slave state.
for that.
T4
T1
T3
T2
Toffset = [(T2-T1)-(T3-T4)]/2
Timestamp
Timestamp
Slave
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