dp83630sqx National Semiconductor Corporation, dp83630sqx Datasheet - Page 94

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

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10:8
Bit
4:1
15
14
13
12
11
14.6.6 PTP Receive Configuration Register 0 (PTP_RXCFG0), Page 5,
This register provides configuration for IEEE 1588 Receive Timestamp operation.
7
6
5
0
ALT_MAST_DIS
USER_IP_SEL
RX_PTP_VER
USER_IP_EN
RX_IPV6_EN
RX_IPV4_EN
DOMAIN_EN
RX_SLAVE
IP1588_EN
RX_TS_EN
RX_L2_EN
Bit Name
TABLE 68. PTP Receive Configuration Register 0 (PTP_RXCFG0), address 0x19
0 000, RW
000, RW
Default
0, RW
0, RW
0, RW
0, RW
0, RW
0, RW
0, RW
0, RW
0, RW
Domain Match Enable:
If set to 1, the Receive Timestamp unit will require the Domain field to match the
value programmed in the PTP_DOMAIN field of the PTP_RXCFG3 register. If set
to 0, the Receive Timestamp will ignore the PTP_DOMAIN field.
Alternate Master Timestamp Disable:
Disables timestamp generation if the Alternate_Master flag is set:
1 = Do not generate timestamp if Alternate_Master = 1
0 = Ignore Alternate_Master flag
IP Address data select:
Selects portion of IP address accessible through the PTP_RXCFG2 register:
0 = Most Significant Octets
1 = Least Significant Octets
Enable User-programmed IP address filter:
Enable detection of UDP/IP Event messages using a programmable IP
addresses. The IP Address is set using the PTP_RXCFG2 register.
Receive Slave Only:
By default, the Receive Timestamp Unit will provide Timestamps for event
messages meeting other requirements. Setting this bit to a 1 will prevent
Delay_Req messages from being Timestamped by requiring that the Control Field
(offset 32 in the PTP message) be set to a value other than 1.
Enable IEEE 1588 defined IP address filters:
Enable detection of UDP/IP Event messages using the IANA assigned IP
Destination addresses. This field affects operation for both IPv4 and IPv6. A
Timestamp is captured for the PTP message if the IP destination address matches
the following:
IP1588_EN[0]: Dest IP address = 224.0.1.129
IP1588_EN[1]: Dest IP address = 224.0.1.130-132
IP1588_EN[2]: Dest IP address = 224.0.0.107
Layer2 Timestamp Enable:
Enables detection of IEEE 802.3/Ethernet encapsulated PTP event messages.
IPv6 Timestamp Enable:
Enables detection of UDP/IPv6 encapsulated PTP event messages.
IPv4 Timestamp Enable:
Enables detection of UDP/IPv4 encapsulated PTP event messages.
PTP Version:
Enable Timestamp capture for a specific version of the IEEE 1588 specification.
This field may be programmed to any value between 1 and 15 and allows support
for future versions of the IEEE 1588 specification. A value of 0 will disable version
checking (not recommended).
Receive Timestamp Enable:
Enable Timestamp capture for Receive.
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Description