dp83630sqx National Semiconductor Corporation, dp83630sqx Datasheet - Page 86

• Manufacturer Part Number: dp83630sqx
• Description: Precision Phyter - Ieee 1588 Precision Time Protocol Transceiver
• Manufacturer: National Semiconductor Corporation

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15:0
15:0
Bit
Bit
14.5.9 PTP Transmit Timestamp Register (PTP_TXTS), Page 4
This register provides a mechanism for reading the Transmit Timestamp. The fields are read in the following order:
•
•
•
•
The Overflow_cnt value indicates if timestamps were dropped due to an overflow of the Transmit Timestamp queue. The overflow
counter will stick at a value of three if additional timestamps were missed.
14.5.10 PTP Receive Timestamp Register (PTP_RXTS), Page 4
This register provides a mechanism for reading the Receive Timestamp and identification information. The fields are read in the
following order:
•
•
•
•
•
•
The Overflow_cnt value indicates if timestamps were dropped due to an overflow of the Transmit Timestamp queue. The overflow
counter will stick at a value of three if additional timestamps were missed.
Timestamp_ns [15:0]
Overflow_cnt[1:0], Timestamp_ns[29:16]
Timestamp_sec[15:0]
Timestamp_sec[31:16]
Timestamp_ns [15:0]
Overflow_cnt[1:0], Timestamp_ns[29:16]
Timestamp_sec[15:0]
Timestamp_sec[31:16]
sequenceId[15:0]
messageType[3:0], source_hash[11:0]
PTP_RX_TS
PTP_TX_TS
Bit Name
Bit Name
TABLE 58. PTP Transmit Timestamp Register (PTP_TXTS), address 0x1C
TABLE 59. PTP Receive Timestamp Register (PTP_RXTS), address 0x1D
0000 0000 0000
0000 0000 0000
0000, RO
0000, RO
Default
Default
PTP Transmit Timestamp:
Reading this register will return the Transmit Timestamp in four 16-bit reads.
PTP Receive Timestamp:
Reading this register will return the Receive Timestamp in four 16-bit reads.
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Description
Description