MPC8308-RDB Freescale Semiconductor, MPC8308-RDB Datasheet - Page 31

• Manufacturer Part Number: MPC8308-RDB
• Description: BOARD REF DESIGN MPC8308
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC II™ PROr
• Type: MPUr

Specifications of MPC8308-RDB

• Contents: Board, Cables, Documentation, Power Supply, Software
• Ethernet Connection Type: Serial to Ethernet
• Data Rate: 10 Mbps, 100 Mbps, 1000 Mbps
• Memory Type: DDR2, SDRAM
• Interface Type: HSSI
• Operating Voltage: 1.5 V
• Operating Current: 5 uA
• Maximum Power Dissipation: 1000 mW
• Operating Temperature Range: - 55 C to + 125 C
• Product: Modules
• For Use With/related Products: MPC8308
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 21
Since LVDS clock driver’s common mode voltage is higher than the MPC8308’s SerDes reference clock
input’s allowed range (100–400 mV), AC-coupled connection scheme must be used. It assumes the LVDS
output driver features 50-Ω termination resistor. It also assumes that the LVDS transmitter establishes its
own common mode level without relying on the receiver or other external component.
Freescale Semiconductor
LVDS CLK Driver Chip
Clock Driver
Clock Driver
Figure 21. AC-Coupled Differential Connection with LVDS Clock Driver (Reference Only)
shows the SerDes reference clock connection reference circuits for LVDS type clock driver.
CLK_Out
CLK_Out
MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 2
10 nF
10 nF
100 Ω differential PWB trace
SD_REF_CLK
SD_REF_CLK
50 Ω
High-Speed Serial Interfaces (HSSI)
50 Ω
MPC8308
SerDes Refer.
CLK Receiver
31