KSZ8695P Micrel Inc, KSZ8695P Datasheet - Page 20

• Manufacturer Part Number: KSZ8695P
• Description: IC ARM9 W/MMU PHY 10/100 289PBGA
• Manufacturer: Micrel Inc

Specifications of KSZ8695P

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 289-PBGA
• Operating Supply Voltage (typ): 1.8/3.3V
• Operating Supply Voltage (min): 1.7/3V
• Operating Supply Voltage (max): 1.9/3.6V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 289
• For Use With: 576-1623 - BOARD EVALUATION KSZ8695P-MMB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-1509-5; KSZ8695P

System Clock
The clock to the KS8695P is supplied by either a 25MHz ±50ppm crystal or by an oscillator. If an oscillator is used, it must
be connected to the XCLK1 input (pin E1) on the KS8695P. If a crystal is used, it must be connected with a circuit similar
to the one shown below. The 25MHz input clock is used by an internal PLL to generate the programmable SDOCLK.
SDOCLK is the system clock and can be programmed from 25MHz to 125MHz using the system clock and bus control
register at offset 0x0004. The CPUCLKSEL strap-in option on pin M15 needs to be pulled low for normal operation.
SDICLK is used to register the data read from the SDRAM back into the KS8695P. The system designer must ensure that
SDRAM timing is met when routing SDOCLK back to SDICLK.
Micrel, Inc.
May 2006
Figure 6. Typical Clock Circuit
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M9999-051806
KS8695P