LAN9303-ABZJ SMSC, LAN9303-ABZJ Datasheet - Page 10
![IC ETHER SW 3PORT 16BIT 56QFN](/photos/29/2/290201/lan9303_sml.jpg)
LAN9303-ABZJ
Manufacturer Part Number
LAN9303-ABZJ
Description
IC ETHER SW 3PORT 16BIT 56QFN
Manufacturer
SMSC
Specifications of LAN9303-ABZJ
Controller Type
Ethernet Switch Controller
Interface
SMBus (2-Wire/I²C)
Voltage - Supply
3 V ~ 3.6 V
Current - Supply
190mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
56-QFN
Product
Ethernet Switches
Standard Supported
Yes
Data Rate
10 Mbps/100 Mbps
Supply Voltage (max)
3.6 V
Supply Voltage (min)
3 V
Supply Current (max)
0.19 A (Typ)
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
For Use With
638-1095 - EVALUATION BOARD FOR LAN9303
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
638-1082
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LAN9303-ABZJ
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
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Small Form Factor Three Port 10/100 Managed Ethernet Switch with Single MII/RMII/Turbo MII
Datasheet
List of Figures
Figure 2.1 Internal Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 2.2 MII MAC Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 2.3 MII/RMII PHY Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 2.4 Port 0 MAC/PHY Management Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 3.1 Pin Assignments (TOP VIEW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 5.1 Functional Interrupt Register Hierarchy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Figure 6.1 Switch Fabric CSR Write Access Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Figure 6.2 Switch Fabric CSR Read Access Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Figure 6.3 ALR Table Entry Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Figure 6.4 Switch Engine Transmit Queue Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Figure 6.5 Switch Engine Transmit Queue Calculation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Figure 6.6 VLAN Table Entry Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Figure 6.7 Switch Engine Ingress Flow Priority Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Figure 6.8 Switch Engine Ingress Flow Priority Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Figure 6.9 Hybrid Port Tagging and Un-tagging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Figure 7.1 Port x PHY Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Figure 7.2 100BASE-TX Transmit Data Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Figure 7.3 100BASE-TX Receive Data Path. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Figure 7.4 Direct Cable Connection vs. Cross-Over Cable Connection . . . . . . . . . . . . . . . . . . . . . . . . . 99
Figure 8.1 I2C Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Figure 8.2 I2C EEPROM Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Figure 8.3 I2C EEPROM Byte Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Figure 8.4 I2C EEPROM Sequential Byte Reads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Figure 8.5 I2C EEPROM Byte Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Figure 8.6 EEPROM Access Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Figure 8.7 EEPROM Loader Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Figure 8.8 I2C Slave Addressing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Figure 8.9 I2C Slave Reads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Figure 8.10 I2C Slave Writes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Figure 10.1 MII Mux Management Path Connections - MAC Mode SMI Managed . . . . . . . . . . . . . . . . 127
Figure 10.2 MII Mux Management Path Connections - MAC Mode I2C Managed . . . . . . . . . . . . . . . . . 128
Figure 10.3 MII Mux Management Path Connections - PHY Mode SMI Managed . . . . . . . . . . . . . . . . . 129
Figure 10.4 MII Mux Management Path Connections - PHY Mode I2C Managed . . . . . . . . . . . . . . . . . 130
Figure 13.1 Base Register Memory Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Figure 13.2 Example SWITCH_MAC_ADDRL, SWITCH_MAC_ADDRH, and EEPROM Setup . . . . . . 163
Figure 14.1 Output Equivalent Test Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350
Figure 14.2 nRST Reset Pin Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
Figure 14.3 Power-On Configuration Strap Latching Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
Figure 14.4 MII Output Timing (MAC Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
Figure 14.5 MII Input Timing (MAC Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
Figure 14.6 MII Output Timing (PHY Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
Figure 14.7 MII Input Timing (PHY Mode). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Figure 14.8 Turbo MII Output Timing (MAC Mode). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357
Figure 14.9 Turbo MII Input Timing (MAC Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358
Figure 14.10Turbo MII Output Timing (PHY Mode). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
Figure 14.11Turbo MII Input Timing (PHY Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360
Figure 14.12RMII P0_OUTCLK Output Mode Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
Figure 14.13RMII P0_OUTCLK Input Mode Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 362
Figure 14.14SMI Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Figure 15.1 56-QFN Package Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 365
Figure 15.2 56-QFN Recommended PCB Land Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 366
Revision 1.4 (07-07-10)
10
SMSC LAN9303/LAN9303i
DATASHEET
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