IP175G/GI/GH/GHI

Data Sheet

2 / 69

November 27, 2012

Copyright © 2012, IC Plus Corp.

IP175Gx-DS-R01.3

Table of Contents

Features............................................................................................................................................................................. 1

General Description .......................................................................................................................................................... 1

Table of Contents .............................................................................................................................................................. 2

List of Tables...................................................................................................................................................................... 4

List of Figures .................................................................................................................................................................... 5

Revision History ................................................................................................................................................................ 6

1

Pin diagram ............................................................................................................................................................... 7

1.1

IP175G/GH Pin diagram (QFN48) ............................................................................................7

2

IP175G/GH application diagram ............................................................................................................................. 8

2.1

An 5 TP port switch application.................................................................................................8

2.2

An 5-port switch mixed with a fiber port ....................................................................................8

3

Pin description........................................................................................................................................................... 9

3.1

Analog pins ...............................................................................................................................9

3.2

MDI (Media Dependent Interface).............................................................................................9

3.3

System clock & reset pins .......................................................................................................10

3.4

Boundry scan & test mode ......................................................................................................10

3.5

EEPROM interface /SMI (Serial Management interface)........................................................11

3.6

Miscellaneous setting pins ......................................................................................................12

3.7

LED interface ..........................................................................................................................13

3.8

Power & ground pads..............................................................................................................13

4

Functional Description............................................................................................................................................ 14

4.1

Switch Engine and Queue Management ................................................................................14

4.1.1

Switch Engine ...............................................................................................................14

4.1.2

Packet Forwarding ........................................................................................................14

4.1.3

Flow control...................................................................................................................14

4.1.4

Backpressure ................................................................................................................14

4.1.5

Broadcast storm protection ...........................................................................................14

4.2

Rserved Group MAC Address.................................................................................................15

4.3

Green Power ...........................................................................................................................16

4.3.1

Auto Power Saving Mode .............................................................................................16

4.3.2

IEEE802.3az EEE (Energy Efficient Ethernet) .............................................................16

4.3.3

WOL+ (Wake On LAN Plus) .........................................................................................16

4.4

Force Power Off ......................................................................................................................17

4.5

Auto Factory Test (AFT) Mode ................................................................................................18

4.6

Reset .......................................................................................................................................18

4.7

Serial management interface ..................................................................................................19

4.8

CoS .........................................................................................................................................20

4.8.1

Port base priority ...........................................................................................................20

4.8.2

Frame base priority .......................................................................................................20

4.8.2.1

VLAN tag and TCP/IP TOS.................................................................................20

4.8.2.2

IPv4/IPv6 DiffServ...............................................................................................21

4.8.2.3

TCP/UDP logical port priority ..............................................................................22

4.9

Port Mirroring ..........................................................................................................................22

4.10 Link Aggergation .....................................................................................................................23

4.11 Buffer Aging.............................................................................................................................25

4.12 LED display (normal operation) ..............................................................................................25

4.13 Serial LED Mode .....................................................................................................................25

4.13.1 Supports link LED only..................................................................................................25

4.13.2 Supports link, speed, and duplex LED..........................................................................26

4.14 LED Blink Timing.....................................................................................................................26

4.15 PAD Driving Calibration...........................................................................................................26

4.16 Fiber port configuration ...........................................................................................................27

5

Register descriptions.............................................................................................................................................. 28