ZL50415
Unmanaged 16-Port 10/100M Layer-2
Ethernet Switch
Data Sheet
Features
•
Integrated Single-Chip 10/100M Ethernet Switch
• Sixteen 10/100 Mbps auto-negotiating Fast Ethernet
(FE) ports with RMII or GPSI (7WS) interface
options per port
April 2006
Ordering Information
ZL50415/GKC
ZL50415GKG2
553 Pin HSBGA
553 Pin HSBGA**
•
Supports one Frame Data Buffer (FDB) memory
domains
(1 MB or 2 MB)
with pipelined, sync-burst
SRAM at 100 MHz
• Applies centralized shared memory architecture
**Pb Free Tin/Silver/Copper
-40°C to 85°C
with 2 drop precedence levels
• Scheduling using delay bounded (DB), strict priority
(SP), and Weighted Fair Queuing (WFQ) disciplines
• User controlled WRED thresholds
• Buffer management: per-class, shared, and per-port
buffer reservations
•
L2 Switching
• MAC address self learning, up to 64K MAC
addresses
• Supports port-based VLAN
•
•
High performance packet classification and
switching at full-wire speed
CPU access supports the following interface
options:
• Serial interface in unmanaged mode, with optional
I
2
C EEPROM support
•
Classification based on:
• Port-based priority: priority in a frame can be
overwritten by the priority of port
• VLAN Priority field in VLAN tagged frame (IEEE
802.1p)
• DS/TOS field in IP packet
• UDP/TCP logical ports: 8 hard-wired and 8
programmable ports, including one programmable
range
•
•
•
Supports Ethernet multicasting and broadcasting
and flooding control
Supports per-system option to enable flow
control for best effort frames even on QoS-
enabled ports
QoS Support
• 4 transmission priorities for Fast Ethernet ports
• Per-queue weighted random early discard (WRED)
VLAN 1 MCT
•
•
The drop precedence of the above classifications
is programmable
Supports IEEE 802.3ad link aggregation
•
2
port trunking groups
Frame Data Buffer A
SRAM (1 M / 2 M)
FDB Interface
LED
FCB
Frame Engine
Search
Engine
MCT
Link
16 x 10/100M
RMII
Ports 0 - 15
Management
Module
Serial
Figure 1 - System Block Diagram
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Copyright 2003-2006, Zarlink Semiconductor Inc. All Rights Reserved.
ZL50415
• two groups for 10/100 ports, with up to 4 ports per group
• Load sharing among trunked ports can be based on:
Data Sheet
•
•
•
•
•
•
- Source and/or destination MAC address
Port Mirroring
• supports a dedicated mirroring port in unmanaged mode
Full Duplex Ethernet IEEE 802.3x Flow Control
Backpressure flow control for Half Duplex ports
Full set of LED signals provided by a serial interface
Built-in reset logic triggered by system malfunction
Built-in self test (BIST) for internal and external SRAM
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Zarlink Semiconductor Inc.
ZL50415
Description
Data Sheet
The ZL50415 is a high density, low cost, high performance, non-blocking Ethernet switch chip. A single chip
provides 16 ports at 10/100 Mbps and a CPU interface for unmanaged switch applications.
The chip supports up to 64K MAC addresses and port-based Virtual LANs (VLANs). The centralized shared
memory architecture permits a very high performance packet forwarding rate at full wire speed. The chip is
optimized to provide low-cost, high-performance workgroup switching.
A Frame Buffer Memory domain utilizes cost-effective, high-performance synchronous SRAM with aggregate
bandwidth of 6.4 Gbps to support full wire speed on all ports simultaneously.
With delay bounded, strict priority, and/or WFQ transmission scheduling and WRED dropping schemes, the
ZL50415 provides powerful QoS functions for various multimedia and mission-critical applications. The chip
provides 4 transmission priorities and 2 levels of dropping precedence. Each packet is assigned a transmission
priority and dropping precedence based on the VLAN priority field in a VLAN tagged frame, or the DS/TOS field, or
the UDP/TCP logical port fields in IP packets. The ZL50415 recognizes a total of 16 UDP/TCP logical ports, 8 hard-
wired and 8 programmable (including one programmable range).
The ZL50415 supports 2 groups of port trunking/load sharing. Two groups are dedicated to 10/100 ports, where
each 10/100 group can contain up to 4 ports. Port trunking/load sharing can be used to group ports between
interlinked switches to increase the effective network bandwidth.
In half-duplex mode all ports support backpressure flow control to minimize the risk of losing data during long
activity bursts. In full-duplex mode, IEEE 802.3x flow control is provided. The ZL50415 also supports a per-system
option to enable flow control for best effort frames, even on QoS-enabled ports.
The ZL50415 is fabricated using 0.25 micron technology. Inputs, however, are 3.3 V tolerant, and the outputs are
capable of directly interfacing to LVTTL levels. The ZL50415 is packaged in a 553-pin Ball Grid Array package.
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Zarlink Semiconductor Inc.
ZL50415
Changes Summary
The April 2006 issue is the starting point for the change summary section.
Revision Date
April 2006
Summary of Changes
- Corrected ZL5041x ordering codes (should be
/GKC)
- Added Pb-free order code (ZL50415GKG2)
- Corrected ECR1Pn default value (should be 0xC0)
- Corrected PR100 default value (should be 0x35)
- Corrected SFCB default value (should be 0x46)
Data Sheet
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ZL50415
Data Sheet
Table of Contents
1.0 BGA and Ball Signal Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.1 BGA Views (Top-View) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.1.1 Encapsulated view in unmanaged mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.2 Ball – Signal Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.3 Ball – Signal Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
1.4 Signal Mapping and Internal Pull Up/Down Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.0 Block Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.1 Frame Data Buffer (FDB) Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.2 MAC Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.2.1 RMII MAC Module (RMAC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.2.1.1 GPSI Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.2.1.2 SCANLINK and SCANCOL interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
2.2.2 PHY Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
2.3 Frame Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
2.4 Search Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
2.5 LED Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2.5.1 Port Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2.5.2 LED Interface Timing Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
2.6 Internal Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
2.7 Timeout Reset Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.0 System Configuration (Stand-alone and Stacking) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.1 Management and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.1.1 I2C Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.1.1.1 Start Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.1.1.2 Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.1.1.3 Data Direction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.1.1.4 Acknowledgment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.1.1.5 Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.1.1.6 Stop Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.1.2 Synchronous Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.1.2.1 Write Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.1.2.2 Read Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.0 Data Forwarding Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.1 Unicast Data Frame Forwarding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.2 Multicast Data Frame Forwarding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.0 Memory Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.2 Memory Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.3 Memory Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.0 Search Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.1 Search Engine Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.2 Basic Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.3 Search, Learning, and Aging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.3.1 MAC Search. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.3.2 Learning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.3.3 Aging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.4 Port--Based VLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.5 Quality of Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.5.1 Priority Classification Rule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7.0 Frame Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7.1 Data Forwarding Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
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