MPC8572DS Freescale Semiconductor, MPC8572DS Datasheet - Page 43

• Manufacturer Part Number: MPC8572DS
• Description: KIT MPU POWERQUICC III
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC III™r
• Type: MPUr

Specifications of MPC8572DS

• Contents: Board
• Data Rate: 10 Mbps to 100 Mbps
• Memory Type: Flash, DDR, DDR2, DDR3, SDRAM
• Interface Type: I2C, Ethernet
• Operating Voltage: 3.3 V
• Data Bus Width: 32 bit
• Product: Development Tools
• Silicon Manufacturer: Freescale
• Core Architecture: Power Architecture
• Core Sub-architecture: PowerQUICC
• Silicon Core Number: MPC85xx
• Silicon Family Name: PowerQUICC III
• Rohs Compliant: Yes
• For Use With/related Products: MPC8572E
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

When operating in SGMII mode, the eTSEC EC_GTX_CLK125 clock is not required for this port. Instead,
SerDes reference clock is required on SD2_REF_CLK and SD2_REF_CLK pins.
8.3.1
The characteristics and DC requirements of the separate SerDes reference clock are described in
Section 15, “High-Speed Serial Interfaces (HSSI).”
8.3.2
Table 37
SD2_REF_CLK are not intended to be used with, and should not be clocked by, a spread spectrum clock
source.
Freescale Semiconductor
Note:
1. 8 ns applies only when 125 MHz SerDes2 reference clock frequency is selected through cfg_srds_sgmii_refclk during POR.
Symbol
t
t
REFCJ
REFPJ
t
REF
REFCLK cycle time
REFCLK cycle-to-cycle jitter. Difference in the period of any two
adjacent REFCLK cycles
Phase jitter. Deviation in edge location with respect to mean edge
location
lists the SGMII SerDes reference clock AC requirements. Note that SD2_REF_CLK and
DC Requirements for SGMII SD2_REF_CLK and SD2_REF_CLK
AC Requirements for SGMII SD2_REF_CLK and SD2_REF_CLK
MPC8572E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 5
Table 37. SD2_REF_CLK and SD2_REF_CLK AC Requirements
Parameter Description
Ethernet: Enhanced Three-Speed Ethernet (eTSEC)
Min
–50
—
—
Typical
10 (8)
—
—
Max
100
50
—
Units
ns
ps
ps
Notes
—
—
1
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