SJA1105 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet Rev. 1 — 7 November 2016 24 of 34
NXP Semiconductors
SJA1105
5-port automotive Ethernet switch
11. Application information
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 Figure 13
.
In this configuration, four TJA1100 BroadR-Reach PHYs are connected to the SJA1105
for MII/RMII operation while a host processor has RGMII connectivity with the SJA1105.
The I/O supply voltage needed at a port depends on the selected configuration: 3.3 V for
MII/RMII operation and 2.5 V for RGMII operation.
(1) RGMII requires an external delay of between 1.5 ns and 2 ns on TXC and RXC.
Fig 13. Typical SJA1105 application circuit
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