描述 Description

The IP1717 is a cost effective and fully integrated single chip. It integrates a 17-port switch controller, an octal PHY transceiver and SSRAM. Each of PHY transceiver complies with 802.3u specification and HP-license Auto MDI/MDIX.

The IP1717 also provides a 3S-MII interface to connect an octal PHY for a 16-port dumb switch application and a MII interface for a smart/management switch application.

In addition, it supports full smart switch functions, including IGMP snooping, 4 priority queues, TOS, TCP/UDP port number priority, 802.1Q VLAN, port security, protocol filter/forwarding and bandwidth control.

特性 Features

Built in 8 internal PHY, 8 SS-SMII (SMII), and one MII

Built in 1.625Mb RAM

Support packet length up to 1600 Bytes

Store & forward, share memory, non-blocking architecture

Support flow control
- 802.3x in full duplex
- Collision/Carrier_sense based backpressure in half duplex
Provide up to 4K MAC address entries
- CRC/ direct hashing algorithm
- Programmable aging timer (55s~1812070.4s)
- Wire speed address learning and resolution

- CPU accessible for security and static MAC

- Learning enable/disable

- IP filter

Support Sniffer function (in, out, in & out)

Support IGMP snooping function Version 1,2
- Support up to 2 trunk groups
- (Port 0~3, port 4~7)
- Load balance based on (port, DA, SA, DA / SA)

Support VLAN
- Port based VLAN
- Tag based VLAN based on Ports & VIDs
- Add/ remove/ modify tag

Support Class of Service

- Port based CoS function
- 802.1Q priority tag based
- IP TOS based (IPv4/IPv6)

- TCP/UDP port based
- 4 queues for per port

- WRR/ FIFS/ SP algorithm

Broadcast storm control support

- Broadcast rate control per port

- Block broadcast packet that not belongs to ARP or IPv4 packet to CPU port

Support port security

- MAC address based
- IP address based

Supports Bandwidth control

- 255 configurable levels for P0~P16, (from 32kbps to 7.96 Mbps) for low bandwidth

- 255 configurable levels for P0-P16 (from 512kbps to 100 Mbps) for high bandwidth
- With/without flow control

Support SMI auto-polling function

- Poll for speed, duplex, flow control, and link
- CPU accessible (interrupt support)

CPU R/W PHY registers

Support SS_SMII and SMII mode

Support 4 port states for Spanning Tree protocol

- Discarding/Blocking/learning/ forwarding
- Forward BPDU to CPU port

Captures specific packet to CPU port
BPDU, LACP, 802.1X, GMRP, GVRP, ARP
ICMP, IGMP, TCP, UDP, OSPF, other IP protocols
- Packets with specific TCP/UDP port number
Flexible PHY address setting for CPU

Support three Configuration modes

- Pin initial setting

- 2 wire serial interface for EEPROM
- 2 wire serial interface for CPU

Statistic counters for each port

- RX/TX packet count

- CRC error packet count
- Drop packet count

- Collision count

Support force link without SMI for Port16

Support Non association port

Support port based address flush

Support LED functions (for p0~p7)

- Support 2 bit serial,3 bit serial, and 3 bit bi color mode

- Support direct LED mode for Link/Activity, speed, duplex states
- Support bi color direct LED mode

Only one 25MHz crystal is needed

Adjustable IO voltage (3.3v MII1.95V SS-SMII)

Programmable MAC address table through CPU interface

128 pin PQFP Lead free package