mpc9855 Integrated Device Technology, mpc9855 Datasheet

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mpc9855

Manufacturer Part Number
mpc9855
Description
Xtal-input, Lvcmos Input, 8 Lvcmos Output Clock Generator
Manufacturer
Integrated Device Technology
Datasheet

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IDT™ Clock Generator for PowerQUICC III
Freescale Timing Solutions Organization has been acquired by Integrated Device Technology, Inc
Clock Generator for PowerQUICC III
Freescale Semiconductor
Technical Data
© Freescale Semiconductor, Inc., 2005. All rights reserved.
Clock Generator for PowerQUICC III
Freescale Microprocessor and Microcontroller applications including the
PowerPC and PowerQUICC. This device generates a microprocessor input
clock. The microprocessor clock is selectable in output frequency to any of the
commonly used microprocessor input and bus frequencies. The device offers
eight low skew clock outputs in two banks, each configurable to support different
clock frequencies. The extended temperature range of the MPC9855 supports
telecommunication and networking requirements.
Features
Functional Description
is selectable from 16 MHz to 200 MHz. The reference is applied to the input of a PLL and multiplied to 2 GHz. Output dividers,
divide this frequency by 10, 12, 15, 16, 18, 20, 24, 30, 40, 60, or 120 to produce output frequencies of 200, 166, 133, 125, 111,
100, 83, 66, 50, 33, or 16 MHz. The single-ended LVCMOS outputs provide 8 low skew outputs for use in driving a microprocessor
or microcontroller clock input as well as other system components. The input reference, either crystal or external input is also
buffered to a separate dual outputs that my be used as the clock source for a Ethernet PHY if desired.
25 MHz crystal for frequency control may also be used. The external clock source my be applied to either of two clock inputs and
selected via the CLK_SEL control input. Both single ended LVCMOS and differential LVPECL inputs are available. The crystal
oscillator or external clock input is selected via the input pin of XTAL_SEL. Other than the crystal, no external components are
required for crystal oscillator operation. The REF_33 MHz configuration pin is used to select between a 33 and 25 MHz input
frequency.
The MPC9855 is a PLL based clock generator specifically designed for
The MPC9855 uses either a 25 or 33 MHz reference frequency to generate 8 LVCMOS output clocks, of which, the frequency
The reference clock may be provided by either an external clock input of 25 or 33 MHz. An internal oscillator requiring a
The MPC9855 is packaged in a 100 lead MAPBGA package to optimize both performance and board density.
8 LVCMOS outputs for processor and other circuitry
Crystal oscillator or external reference input
25 or 33 MHz Input reference frequency
Selectable output frequencies include = 200, 166, 133,125, 111, 100, 83, 66,
50, 33, or 16 MHz
Buffered reference clock output (2 copies)
Low cycle-to-cycle and period jitter
100-lead PBGA package
100-lead Pb-free Package Available
3.3 V supply with 3.3 V or 2.5 V LVCMOS output supplies
Supports computing, networking, telecommunications applications
Ambient temperature range –40°C to +85°C
1
100 MAPBGA PACKAGE
CLOCK GENERATOR
MICROPROCESSOR
VM SUFFIX (PB-FREE)
CASE 1462-01
VF SUFFIX
SCALE 2 1
Rev 4, 09/2005
DATA SHEET
MPC9855
MPC9855
MPC9855

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mpc9855 Summary of contents

Page 1

... Ambient temperature range –40°C to +85°C Functional Description The MPC9855 uses either MHz reference frequency to generate 8 LVCMOS output clocks, of which, the frequency is selectable from 16 MHz to 200 MHz. The reference is applied to the input of a PLL and multiplied to 2 GHz. Output dividers, divide this frequency by 10, 12, 15, 16, 18, 20, 24, 30, 40, 60, or 120 to produce output frequencies of 200, 166, 133, 125, 111, 100, 83, 66, 50, 33 MHz ...

Page 2

... REF_OUT1_E MPC9855 IDT™ Clock Generator for PowerQUICC III Freescale Timing Solutions Organization has been acquired by Integrated Device Technology, Inc Ref 0 1 PLL 2000 MHz Figure 1. MPC9855 Logic Diagram 2 NETCOM ÷N QA0 QA1 QA2 QA3 ÷N QB0 QB1 QB2 QB3 ...

Page 3

... DD V — — High DD V High DD V High DD V High DD V Low DD V High DD V — — DD — — — — — — — — — — 1 PCLK XTAL Bypass Enables REF_OUT1 Selects 33 MHz Reference Normal MPC9855 MPC9855 3 ...

Page 4

... CLK_x[5] Frequency N (lsb) (MHz 126 15. 120 16. 25. 33. 50. 66. 83. 100. 111. 125. 133. 166. 200. (2) 8 Advanced Clock Drivers Devices Freescale Semiconductor NETCOM 250 MPC9855 ...

Page 5

... Power-Up and MR Operation Figure 2 length for MR pin. The MR release time is based upon the power supply being stable and within V Table 9 for actual parameter values. The MPC9855 may be configured after release of reset and the outputs will be stable for use after lock is obtained. t reset_rel Figure 2 ...

Page 6

... Typ Max Unit Condition ÷ Inputs 8 pF Per Output °C/W 54.5 Air flow = 0 °C 85 Typ Max Unit Condition 135 170 pins, outputs unloaded pins DDIN Advanced Clock Drivers Devices Freescale Semiconductor NETCOM DDA MPC9855 ...

Page 7

... PD CMR (AC (AC) impacts the device propagation delay, PP Typ Max Unit Condition V + 0.3 V LVCMOS DD 0.8 V LVCMOS µA ± 200 GND IN DDL – 0 Ω – 0 Ω MPC9855 NETCOM (AC) MPC9855 7 ...

Page 8

... AC characteristics are design targets and pending characterization characteristics apply for parallel output termination of 50Ω bypass mode, the MPC9855 divides the input reference clock. 4. The input reference frequency must match the VCO lock range divided by the total feedback divider ratio: f ...

Page 9

... MPC9855 Clock Generator for PowerQUICC III Table 10. MPC9855 Pin Diagram (Top View DDOA DDOA DDOA DDOA RSVD RSVD DDA DDA XTAL_SEL CLK E PCLK PCLK F CLK_SEL REF_33MHz G XTAL_IN XTAL_OUT DDOB DDOB DDOB DDOB Table 11. MPC9855 Pin List ...

Page 10

... MPC9855 IDT™ Clock Generator for PowerQUICC III Freescale Timing Solutions Organization has been acquired by Integrated Device Technology, Inc 10 PACKAGE DIMENSIONS VA SUFFIX VM SUFFIX (PB-FREE) 100 MAPBGA PACKAGE CASE 1462-01 ISSUE A 10 NETCOM PAGE MPC9855 Advanced Clock Drivers Devices Freescale Semiconductor ...

Page 11

... IDT™ Clock Generator for PowerQUICC III Advanced Clock Drivers Devices Freescale Timing Solutions Organization has been acquired by Integrated Device Technology, Inc Freescale Semiconductor PACKAGE DIMENSIONS VA SUFFIX VM SUFFIX (PB-FREE) 100 MAPBGA PACKAGE CASE 1462-01 ISSUE A 11 NETCOM PAGE MPC9855 MPC9855 11 ...

Page 12

... MPC92459 MPC9855 PART NUMBERS 900 MHz Low Voltage LVDS Clock Synthesizer Clock Generator for PowerQUICC III INSERT PRODUCT NAME AND DOCUMENT TITLE Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales 800-345-7015 408-284-8200 Fax: 408-284-2775 Corporate Headquarters Integrated Device Technology, Inc. ...

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