lan9313 Standard Microsystems Corp., lan9313 Datasheet - Page 135
lan9313
Manufacturer Part Number
lan9313
Description
Lan9313/lan9313i Three Port 10/100 Managed Ethernet Switch With Mii
Manufacturer
Standard Microsystems Corp.
Datasheet
1.LAN9313.pdf
(398 pages)
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Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
SMSC LAN9313/LAN9313i
10.1.2
Ethernet
Ethernet
GPIO[8:9]
GPIO[8:9]
(Outputs)
(Inputs)
10/100
10/100
PHY
PHY
Time Stamp
IEEE 1588
Block Diagram
The LAN9313/LAN9313i IEEE 1588 implementation is illustrated in
following major function blocks:
RX: Delay_Req for Master, Sync for Slave
TX: Sync for Master, Delay_Req for Slave
IEEE 1588 Time Stamp
These three identical blocks provide time stamping functions on all switch fabric ports.
IEEE 1588 Clock
This block provides a 64-bit tunable clock that is used as the time source for all IEEE 1588 time
stamp related functions.
IEEE 1588 Clock/Events
This block provides IEEE 1588 clock comparison-based interrupt generation and time stamp related
GPIO event generation.
Sync / Delay_Req
Sync / Delay_Req
Msg Detect RX
Msg Detect TX
MII
MII
TX
RX
Switch Fabric
IEEE 1588 Clock Events
IEEE 1588 Time Stamp
Time Stamp
IEEE 1588
Figure 10.1 IEEE 1588 Block Diagram
MII
Sequence ID Capture RX
Sequence ID Capture TX
Clock Capture GPIO8
Clock Capture GPIO9
Src UUID Capture RX
Src UUID Capture TX
64 Bit Reload / Add
64 Bit Clock Target
Clock Capture RX
Clock Capture TX
compare >=
load / add
IRQ Flag
IRQ Flag
IRQ Flag
IRQ Flag
IRQ Flag
DATASHEET
135
host
host
IRQ Enables
IRQ Flags
32 Bit Accumulator
To External MAC/PHY
32 Bit Addend
64 Bit Clock
Figure
IEEE 1588 Clock
inc
+
X9
10.1, and consists of the
Revision 1.2 (04-08-08)
To INT_STS register
carry
host
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