lan9313 Standard Microsystems Corp., lan9313 Datasheet - Page 19

• Manufacturer Part Number: lan9313
• Description: Lan9313/lan9313i Three Port 10/100 Managed Ethernet Switch With Mii
• Manufacturer: Standard Microsystems Corp.

2.2
To Ethernet
To Ethernet
LAN9313/LAN9313i
Block Diagram
10/100
10/100
PHY
Registers
PHY
Registers
Time Stamp
Time Stamp
IEEE 1588
IEEE 1588
MDIO
MDIO
MII
MII
To optional GPIOs/LEDs
GPIO/LED
Controller
10/100
10/100
MAC
MAC
Buffer Manager
Switch Engine
Clock/Events
Time Stamp
IEEE 1588
Switch Fabric
Figure 2.1 Internal LAN9313/LAN9313i Block Diagram
Search
Engine
Buffers
Frame
Controller
Interrupt
System
IRQ
Registers
(CSRs)
10/100
Switch
MAC
25MHz Crystal
Reset/PME
Controller
External
System
Clocks/
Time Stamp
IEEE 1588
Registers
System
(CSRs)
GP Timer
Free-Run
Clk
Register
Access
MUX
EEPROM Controller
PHY Management
EEPROM Loader
Microwire (master)
Virtual PHY
Interface (PMI)
SMI (slave)
SPI (slave)
I
I
Controller
Controller
2
2
C (master)
C (slave)
Registers
MDIO
MDIO
MII
MDIO
I
2
C/Microwire
Mode
MUX
SPI/I
MII
2
C
MDIO
MII
Management Mode
Configuration Straps
To optional CPU
serial management
(via I
To optional EEPROM
(via I
To optional PHY, MAC,
or SMI Master
2
2
C/SPI slave)
C/Microwire master)