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SJA1105 Automotive Ethernet Switch: Datasheet, User Manual, Application Circuit [Video&FAQ]

Author: Irene
Date: 13 Oct 2021
 48
SJA1105 Datasheet

Product Overview

The SJA1105 is an IEEE 802.3-compliant 5-port automotive Ethernet switch. Each of the five ports can be individually configured to operate in MII, RMII and RGMII modes. This arrangement provides the flexibility to connect a mix of switches, microprocessors and PHY devices such as the TJA1100 BroadR-Reach PHY from NXP Semiconductors and other commercially available Fast Ethernet and Gigabit Ethernet PHYs.

 

This blog will introduce SJA1105 systematically from its features, pinout to its specifications, applications, also including SJA1105 datasheet and so much more.

 

Video: How Does Ethernet Work? The Ethernet Switch Explained

 

Catalog

Product Overview

SJA1105 Features

SJA1105 Pinout

SJA1105 Applications

SJA1105 Block Diagram

Typical SJA1105 Application Circuit

SJA1105 Specification

SJA1105 Manufacturer

SJA1105 User Manual and Datasheet

Using Warnings

SJA1105 FAQ

 

SJA1105 Features

  • 5-port store and forward architecture
  • Each port individually configurable for MII and RMII operation at 10 Mbit/s or
  • 100 Mbit/s and RGMII operation at 10 Mbit/s, 100 Mbit/s or 1000 Mbit/s
  • Interface-dependent selectable I/O supply voltages; 1.2 V core voltage
  • Small footprint: LFBGA159 (12 mm ´ 12 mm) package
  • Automotive Grade 2 ambient operating temperature: 40 C to +105 C
  • Automotive product qualification in accordance with AEC-Q100

 

Ethernet switching and AVB features

  • IEEE 802.3 compliant
  • 128 kB frame buffer
  • 1024 entry MAC address learning table
  • Address learning space can be configured for static and learned addresses
  • 2 kB frame length handling
  • IEEE 802.1Q defined tag support
  • 4096 VLANs
  • Egress tagging/untagging on a per-VLAN basis per port
  • QoS handling based on IEEE 802.1Q
  • Per-port priority remapping and 8 configurable egress queues per port
  • Ingress rate-limiting on a per-port and per-priority basis for Unicast/Multicast andBroadcast traffic
  • Frame replication and retagging of traffic
  • Frame mirroring for enhanced diagnostics
  • Hardware support for IEEE 802.1AS and IEEE 802.1Qav for AVB traffic support
  • Ingress and egress timestamping per port
  • Ten IEEE 802.1Qav credit-based shapers available; shapers can be freely allocated toany priority queue on a per port basis
  • Support for AVB SR Class A, Class B and Class C traffic
  • IEEE 1588v2 one-step sync forwarding in hardware
  • IEEE 802.1X support for setting port reachability and disabling address learning
  • Broadcast storm protection
  • Statistics for dropped frames and buffer load

 

TT and TSN features (SJA1105TEL only)

  • IEEE 802.1Qbv time-aware traffic
  • IEEE 802.1Qci per-stream policing (pre-standard)
  • Support for ring-based redundancy (for time-triggered traffic only)
  • 1024 deterministic Ethernet flows with per-flow based:

    -Time-triggered traffic transmission

    -Ingress policing and reception window check

    -Active and redundant routes

    -Statistics

 

Interface features

  • MII/RMII interfaces supporting all standard Ethernet PHY technologies such as (butnot limited to) Fast Ethernet (IEEE 100BASE-TX), IEEE 100BASE-T1 and optical PHYs
  • RGMII for interfacing with Gigabit Ethernet (1000BASE-T) PHYs (Gigabit Ethernet)
  • MAC and PHY modes for interfacing (MII/RMII/RGMII) directly with another switch orhost processor
  • Programmable drive strength for all interfaces
  • SPI at up to 25 MHz for host processor access

 

Other features

  • 25 MHz system clock input from crystal oscillator or AC-coupled single-ended clock
  • 25 MHz reference clock output
  • Device reset input from host processor
  • IEEE 1149.1 compliant JTAG interface for TAP controller access and boundary scan

 

SJA1105 Pinout

The following figure is the diagram of SJA1105 pinout.

 

SJA1105 Pinout

SJA1105 Pinout

 

SJA1105 Pin Configuration

SJA1105 Pin Configuration

 

SJA1105 Applications

It can be used in various automotive scenarios such as gateway applications, body domain controllers or for interconnecting multiple ECUs in a daisy chain. Audio Video Bridging (AVB) support (Ref. 3) fully leverages infotainment and advanced driver assistance systems.

 

SJA1105 Block Diagram

The following figure shows the block diagram of SJA1105.

 

SJA1105 Block Diagram1

SJA1105 Block Diagram1

 

SJA1105 Block Diagram2

SJA1105 Block Diagram2

 

Typical SJA1105 Application Circuit

The SJA1105 features a programmable traffic interface. Each of the five ports can be individually configured for 10 Mbit/s or 100 Mbit/s MII/RMII/RGMII, or for 1 Gbit/s RGMII operation. A typical use case is illustrated in following figure.

 

SJA1105 Application Circuit

SJA1105 Application Circuit

 

SJA1105 Specification

Manufacturer: NXP Semiconductors
Operating Temperature-Max: 105 °C
Operating Temperature-Min: -40 °C
Supply Voltage-Nom: 1.2 V
Telecom IC Type: TELECOM CIRCUIT
Temperature Grade: INDUSTRIAL

 

SJA1105 Manufacturer

NXP Semiconductors N.V. enables secure connections for a smarter world, advancing solutions that make lives easier, better and safer. As the world leader in secure connectivity solutions for embedded applications, NXP is driving innovation in the automotive, industrial & IoT, mobile and communication infrastructure markets.

 

SJA1105 User Manual and Datasheet

You can download this datasheet for SJA1105–Datasheet from the link given below:

SJA1105 User Manual&Datasheet

 

Using Warnings

Note: Please check their parameters and pin configuration before replacing them in your circuit.

 

SJA1105 FAQ

Is the sja1105 switch a Linux driver?

The 5 ports of the SJA1105 switch do not have a Linux kernel driver. As such, the PHY chip (BCM5464R) attached to the 4 externally connected ports of the LS1021ATSN board (ETH2, ETH3, ETH4, ETH5) is not controlled by the Linux kernel either.

 

What kind of ports does the NXP sja1105 switch support?

The NXP SJA1105 is a family of 6 devices: These are SPI-managed automotive switches, with all ports being gigabit capable, and supporting MII/RMII/RGMII and optionally SGMII on one port. Being automotive parts, their configuration interface is geared towards set-and-forget use, with minimal dynamic interaction at runtime.

 

How many retagging entries does sja1105 switch 1 use?

SJA1105 switch 1 consumes 1 retagging entry for each VLAN on each user port towards the CPU. It also consumes 1 retagging entry for each non-pvid VLAN that it is also interested in, which is configured on any port of any neighbor switch.

 

How does the sja1105 emulate a PHY interface?

The SJA1105 emulates a PHY interface fully and generates the /J/ and /K/ symbols prior to frame preambles, which the real PHY is not expected to understand. So the PHY simply encodes the extra symbols received from the SJA1105-as-PHY onto the 100Base-Tx wire.

 

What is an Ethernet switch used for?

An Ethernet switch creates networks and uses multiple ports to communicate between devices in the LAN. Ethernet switches differ from routers, which connect networks and use only a single LAN and WAN port. A full wired and wireless corporate infrastructure provides wired connectivity and Wi-Fi for wireless connectivity.

Ordering & Quality

Photo Mfr. Part # Company Description Package PDF Qty Pricing
(USD)
OM14510-SJA1105TJP OM14510-SJA1105TJP Company:NXP USA Inc. Remark:APPLICATION BOARD Package:1
DataSheet
In Stock:1
Inquiry
Price:
1+: $396.63000
Inquiry
SJA1105ELY SJA1105ELY Company:NXP USA Inc. Remark:IC ETHERNET SWITCH SPI 159LFBGA Package:159-LFBGA
DataSheet
In Stock:1036
Inquiry
Price:
1000+: $3.29813
2000+: $3.17415
5000+: $3.07495
10000+: $2.97576
1+: $6.57000
10+: $5.90200
25+: $5.57960
100+: $4.58760
250+: $4.11648
500+: $3.96768
Inquiry
SJA1105PELY SJA1105PELY Company:NXP USA Inc. Remark:IC ETHERNET SWITCH SPI 159LFBGA Package:159-LFBGA
DataSheet
In Stock:1175
Inquiry
Price:
1000+: $3.78300
2000+: $3.63750
5000+: $3.57930
10000+: $3.49200
1+: $6.93000
10+: $6.25700
25+: $5.96560
100+: $4.94700
250+: $4.51052
500+: $4.21950
Inquiry
SJA1105QELY SJA1105QELY Company:NXP USA Inc. Remark:IC ETHERNET SWITCH SPI 159LFBGA Package:159-LFBGA
DataSheet
In Stock:1000
Inquiry
Price:
1000+: $4.92570
2000+: $4.73625
5000+: $4.66047
10000+: $4.54680
1+: $9.91000
10+: $8.95000
25+: $8.53400
100+: $7.07690
250+: $6.45248
500+: $6.03620
Inquiry
SJA1105Q-EVB SJA1105Q-EVB Company:NXP USA Inc. Remark:SJA1105Q-EVB Package:1
DataSheet
In Stock:On Order
Inquiry
Price:
1+: $479.96000
Inquiry
SJA1105RELY SJA1105RELY Company:NXP USA Inc. Remark:IC ETHERNET SWITCH SPI 159LFBGA Package:159-LFBGA
DataSheet
In Stock:On Order
Inquiry
Price:
1+: $7.64000
10+: $6.90200
25+: $6.58040
100+: $5.45700
250+: $4.97552
500+: $4.65450
1000+: $4.17300
2000+: $4.01250
5000+: $3.94830
10000+: $3.85200
Inquiry
SJA1105SELY SJA1105SELY Company:NXP USA Inc. Remark:IC ETHERNET SWITCH SPI 159LFBGA Package:159-LFBGA
DataSheet
In Stock:1887
Inquiry
Price:
1+: $9.92000
10+: $8.96100
25+: $8.54440
100+: $7.08560
250+: $6.46040
500+: $6.04360
1000+: $5.41840
2000+: $5.21000
5000+: $5.12664
10000+: $5.00160
Inquiry
SJA1105TELY SJA1105TELY Company:NXP USA Inc. Remark:IC ETHERNET SWITCH SPI 159LFBGA Package:159-LFBGA
DataSheet
In Stock:529
Inquiry
Price:
1+: $12.08000
10+: $11.09800
25+: $10.63760
100+: $8.91250
250+: $8.33752
500+: $7.76250
1000+: $4.43040
2000+: $4.26000
5000+: $4.19184
10000+: $4.08960
Inquiry

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