LAN9353 Datasheet, PDF (449/523 Pages) Microchip Technology – Interfaces at up to 200Mbps via Turbo MII

LAN9353
15.8.24 1588 PORT X RX TIMESTAMP INSERTION CONFIGURATION REGISTER
(1588_RX_TS_INSERT_CONFIG_X)
Offset:
Bank:
160h
1
Size:
32 bits
This register is used to configure PTP message timestamp insertion.
Note:
Port and GPIO registers share a common address space. Port registers are selected by the Bank Select
(BANK_SEL[2:0] in the 1588 Bank Port GPIO Select Register (1588_BANK_PORT_GPIO_SEL). The port
accessed (“x”) is set by the Port Select (PORT_SEL[1:0]) field.
Bits
Description
31:18
17
RESERVED
RX PTP Insert Delay Request Egress in Delay Response Enable
(RX_PTP_INSERT_DREQ_DRESP_EN)
When this bit is set, the egress time of the last Delay_Req packet is inserted
into received Delay_Resp packets.
This bit has no affect if RX_PTP_INSERT_TS_EN is a low or if detection of
the Delay_Resp message type is not enabled.
16 RX PTP Bad UDP Checksum Force Error Disable
(RX_PTP_BAD_UDP_CHKSUM_FORCE_ERR_DIS)
When this bit is cleared, ingress packets that have an invalid UDP checksum
will have a receive symbol error forced if the packet is modified for timestamp
or correction field reasons.
When this bit is set, the UDP checksum check is bypassed.
Note:
The host S/W must not change this bit while the 1588 Enable
(1588_ENABLE) bit in 1588 Command and Control Register
(1588_CMD_CTL) is set.
15 RX PTP Insert Timestamp Seconds Enable
(RX_PTP_INSERT_TS_SEC_EN)
When RX_PTP_INSERT_TS_EN is set, this bit enables bits 3:0 of the sec-
onds portion of the receive ingress time to be inserted into the PTP message.
This bit has no affect if RX_PTP_INSERT_TS_EN is a low.
14 RESERVED
13:8 RX PTP Insert Timestamp Seconds Offset
(RX_PTP_INSERT_TS_SEC_OFFSET[5:0])
This field specifies the offset into the PTP header where the seconds portion
of the receive ingress time is inserted.
Note:
The host S/W must not change this field while the 1588 Enable
(1588_ENABLE) bit in 1588 Command and Control Register
(1588_CMD_CTL) is set.
7
RX PTP Insert Timestamp Enable (RX_PTP_INSERT_TS_EN)
When set, receive ingress times are inserted into the PTP message.
6
RESERVED
Type
RO
R/W
R/W
R/W
RO
R/W
R/W
RO
Default
-
0b
0b
0b
-
000101b
0b
-
 2015 Microchip Technology Inc.
DS00001925A-page 449