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SJA1105 Datasheet

5-port automotive Ethernet switch

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SJA1105
5-port automotive Ethernet switch
Rev. 1 — 7 November 2016
Product data sheet
1. General description
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
(Ref. 1 and Ref. 2) and other commercially available Fast Ethernet and Gigabit Ethernet
PHYs. The high-speed interface makes it easy to cascade multiple SJA1105s for
scalability. 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.
The SJA1105 comes in two pin-compatible variants. The SJA1105EL supports Ethernet
and AVB. The SJA1105TEL includes additional functionality to support Time-Triggered
Ethernet (TTEthernet) and Time-Sensitive Networking (TSN).
2. Features and benefits
2.1 General 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
2.2 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


NXP Semiconductors Electronic Components Datasheet

SJA1105 Datasheet

5-port automotive Ethernet switch

No Preview Available !

NXP Semiconductors
SJA1105
5-port automotive Ethernet switch
Ingress rate-limiting on a per-port and per-priority basis for Unicast/Multicast and
Broadcast 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 to
any 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
2.3 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
2.4 Interface features
MII/RMII interfaces supporting all standard Ethernet PHY technologies such as (but
not limited to) Fast Ethernet (IEEE 100BASE-TX), IEEE 100BASE-T1 and optical
PHYs
RGMII for interfacing with Gigabit Ethernet (1000BASE-T) PHYs (Gigabit Ethernet;
Ref. 4)
MAC and PHY modes for interfacing (MII/RMII/RGMII) directly with another switch or
host processor
Programmable drive strength for all interfaces
SPI at up to 25 MHz for host processor access
2.5 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
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 7 November 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
2 of 34


Part Number SJA1105
Description 5-port automotive Ethernet switch
Maker NXP
Total Page 3 Pages
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