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P5040/P5020 Reference Design Board User Guide, Rev. 0
Freescale Semiconductor
13
Architecture
Figure 7. P5040/P5020 SerDes Banks 2,3, and 4 to Reference Board XAUI ports/
SATA Connectors Configuration
5.1.3
Ethernet Controller (EC) Interfaces
The two TSEC—with twisted pair 10/100/1000-Base-T interface—are IEEE 802.3-compliant. Vitesse
VSC8244 PHY supports four integrated PHYs though only two are in use. The P5040/P5020RDB only
uses the RGMII protocol.
This table shows the general organization of the ETH system.
Table 6. 10/100/1000 Base-T GETH Ports
GETH Feature
Specifics
Description
GETH Clocks
IDT
ICS8304AMLF
• Low skew Fanout Buffer
• Receives 125MHz clock oscillator input and generates four LVCMOS/LVTLL
outputs:
–
P5040/P5020 EC1_GTXCLK_125 clock input
–
P5040/P5020 EC2_GTXCLK_125 clock input
–
P5040/P5020 1588 clock input
–
VSC8244 PHY XTAL1 input
P5040/P5020
REFCLK_SD2/3/4(p,n)
125 MHz
Port 1 of TN8022
TX/RX[0:3](p,n)
SATA port1 & 2
TX/RX[1:2](p,n)
SD_TX/RX[10:13](p,n)
SD_TX/RX[14:17](p,n)
SATA connectors
2 COPPER PORTS
Port 2 of TN8022
p5040B3lanesA-D
p5020B3lanesCD
2 SFP+ PORTS
SD_TX/RX[P1B,P1A](p,n)