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MPC9350 Datasheet(PDF) 1 Page - Motorola, Inc

Part No. MPC9350
Description  LOW VOLTAGE PLL CLOCK DRIVER
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Maker  MOTOROLA [Motorola, Inc]
Homepage  http://www.freescale.com
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MPC9350 Datasheet(HTML) 1 Page - Motorola, Inc

 
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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order Number: MPC9350/D
Rev 3, 01/2002
1
© Motorola, Inc. 2002
Low Voltage PLL Clock Driver
The MPC9350 is a 2.5V and 3.3V compatible, PLL based clock
generator targeted for high performance clock distribution systems. With
output frequencies of up to 200 MHz and maximum output skews of 150
ps the MPC9350 is ideal for the most demanding clock tree designs. The
device offers 9 low skew clock outputs, each is configurable to support the
clocking needs of the various high-performance microprocessors
including the PowerQuicc II integrated communication microprocessor.
The extended temperature range of the MPC9350 supports
telecommunication and networking requirements. The devices employs a
fully differential PLL design to minimize cycle-to-cycle and long-term jitter.
Features
9 outputs LVCMOS PLL clock generator
25 – 200 MHz output frequency range
2.5V and 3.3V compatible
Compatible to various microprocessor such as PowerQuicc II
Supports networking, telecommunications and computer applications
Fully integrated PLL
Configurable outputs: divide-by-2, 4 and 8 of VCO frequency
Selectable output to input frequency ratio of 8:1, 4:1, 2:1 or 1:1
Oscillator or crystal reference inputs
Internal PLL feedback
Output disable
PLL enable/disable
Low skew characteristics: maximum 150 ps output-to-output
32 lead LQFP package
Temperature range –40°C to +85°C
Functional Description
The MPC9350 generates high frequency clock signals and provides nine exact frequency-multiplied copies of the reference
clock signal. The internal PLL allows the MPC9350 to operate in frequency locked condition and to multiply the input reference
clock. The reference clock frequency and the divider in the internal feedback path determine the VCO frequency. Two selectable
PLL feedback frequency ratios are available on the MPC9350 to provide input frequency range flexibility. The FBSEL pin selects
between divide-by-16 or divide-by-32 of the VCO frequency for PLL feedback. This feedback divider must be selected to match
the VCO frequency range. With the available feedback output dividers the internal VCO of the MPC9350 is running at either 16x
or 32x of the reference clock frequency. The frequency of the QA, QB, QC and QD outputs is either one half, one fourth or one
eighth of the selected VCO frequency and can be configured for each output bank using the FSELA, FSELB, FSELC and FSELD
pins, respectively. The available output to input frequency ratios are 16:1, 8:1, 4:1 and 2:1. The REF_SEL pin selects the crystal
oscillator inputs or the LVCMOS compatible reference input (TCLK). TCLK also provides an external test clock in static test mode
when the PLL enable pin (PLL_EN) is pulled to logic low state. In test mode, the selected input reference clock is routed directly to
the output dividers without using the PLL. The test mode is intended for system diagnostics, test and debug purpose. This test
mode is fully static and the minimum clock frequency specification does not apply. The outputs can be disabled by deasserting
the OE pin (logic high state). In PLL mode, deasserting OE maintains PLL lock due to the internal feedback path. The MPC9350 is
fully 2.5V and 3.3V compatible and requires no external loop filter components. The on-chip crystal oscillator requires no external
components beyond a series resonant crystal. All inputs except the crystal oscillator interface accept LVCMOS signals while the
outputs provide LVCMOS compatible levels with the capability to drive terminated 50
W transmission lines. For series terminated
transmission lines, each of the MPC9350 outputs can drive one or two traces giving the devices an effective fanout of 1:18. The
device is packaged in a 7x7 mm2 32-lead LQFP package.
FA SUFFIX
32 LEAD LQFP PACKAGE
CASE 873A
MPC9350
LOW VOLTAGE
3.3V AND 2.5V PLL
CLOCK GENERATOR
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com


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