LAN9353 Datasheet, PDF (474/523 Pages) Microchip Technology – Interfaces at up to 200Mbps via Turbo MII

LAN9353
15.8.44 1588 PORT X TX DELAY_REQ EGRESS TIME NANOSECONDS REGISTER
(1588_TX_DREQ_NS_X)
Offset:
Bank:
17Ch
2
Size:
32 bits
This register combined with the 1588 Port x TX Delay_Req Egress Time Seconds Register (1588_TX_DREQ_SEC_x)
contains the egress time of the last Delay_Req message. The contents of this field are normally only used to insert the
egress time into received Delay_Resp messages.
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
31:30
29:0
RESERVED
Timestamp NanoSeconds (TS_NS)
This field contains the nanoseconds portion of the transmit egress time.
Type
RO
RO
Default
-
00000000h
DS00001925A-page 474
 2015 Microchip Technology Inc.