The recommended PCB layout for the RTL8309SB can be found in the Realtek application note AN030, which provides guidelines for PCB design, component placement, and thermal management.
The RTL8309SB can be configured for different Ethernet speeds using the Speed Control Register (SCR) and the PHY Control Register (PCR). The datasheet provides a detailed description of the register settings for different speeds, including 10Mbps, 100Mbps, and 1000Mbps.
The power consumption of the RTL8309SB varies depending on the mode of operation. In normal mode, the typical power consumption is around 350mA. In power-down mode, the typical power consumption is around 10mA. The datasheet provides a detailed power consumption table for different modes.
The RTL8309SB supports VLAN tagging and priority queuing through the VLAN Tag Register (VTR) and the Priority Queue Register (PQR). The datasheet provides a detailed description of the register settings and programming examples for implementing VLAN tagging and priority queuing.
The RTL8309SB supports cable lengths up to 100 meters for 1000Base-T and 100Base-TX, and up to 200 meters for 10Base-T. However, the actual cable length may vary depending on the cable quality, noise environment, and other factors.
RTL8309SB datasheet
by Realtek Semiconductor
