Microchip Technology ATSAMA5D2-ICP User Manual page 25

• Optional Wi-Fi/BT interface (Microchip WILC3000)
• Dual CAN interface (Microchip MCP2542)
• Serial links
3.2.8.1 Clock Generator
The clock sources of choice for the communication peripherals are MEMS oscillators.
The DSC1001 is a silicon MEMS-based CMOS oscillator offering excellent jitter and stability performance over a wide
range of supply voltages and temperatures.
The DSC6000 family of MEMS oscillators combines industry-leading low power consumption with ultra-small
packages.
Each communication interface uses its own source oscillator:
• One DSC1001DI5-025.0000 (25 MHz) oscillator used for the Ethernet dual switch
• One DSC1001DI5-025.0000 (25 MHz) oscillator used for the Ethernet HSIC interface
• One DSC1001DI5-025.0000 (25 MHz) oscillator used for the EtherCAT interface
• One DSC1001CI5-024.0000 (24 MHz) oscillator used for the USB hub chip
• One DSC6011JI1A-012.0000 oscillator used for the J-Link-OB (12 MHz)
• One DSC1001DL5-012.0000 oscillator used for the SAMA5D27 main clock (12 MHz)
3.2.8.2 10/100 Ethernet Switch
The KSZ8563 is a highly-integrated, IEEE 802.3 compliant networking device that incorporates a layer-2+ managed
Ethernet switch, two 10Base-T/100Base-TX physical layer transceivers (PHYs) and associated MAC units, and one
MAC port with a configurable RGMII/MII/RMII interface for direct connection to a host processor/ controller, another
Ethernet switch, or an Ethernet PHY transceiver. KSZ8563 also implements IEEE 1588v2 Precision Timing Protocol
one-step operation.
Additionally, for monitoring and control purposes, an LED functionality is carried on the RJ45 connectors to indicate
activity, link, and speed status information.
For more information about the Ethernet controller device, refer to the KSZ8563 controller manufacturer's data sheet.
3.2.8.2.1 External Chip Reset
When the Reset push button switch is pressed, the device places all pins into their default state. An additional PIO
resets the KSZ8563.
The figure below illustrates the implementation of the Ethernet switch interface.
©
2020 Microchip Technology Inc.
User Guide
ATSAMA5D2-ICP
Board Components
DS60001592A-page 25