SCAS849G June   2007  – October 2016 CDCE913 , CDCEL913

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 EEPROM Specification
    7. 6.7 Timing Requirements: CLK_IN
    8. 6.8 Timing Requirements: SDA/SCL
    9. 6.9 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Control Terminal Configuration
      2. 8.3.2 Default Device Configuration
      3. 8.3.3 SDA/SCL Serial Interface
      4. 8.3.4 Data Protocol
    4. 8.4 Device Functional Modes
      1. 8.4.1 SDA/SCL Hardware Interface
    5. 8.5 Programming
    6. 8.6 Register Maps
      1. 8.6.1 SDA/SCL Configuration Registers
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Spread Spectrum Clock (SSC)
        2. 9.2.2.2 PLL Frequency Planning PLL settings limits: 16≤q≤63, 0≤p≤7, 0≤r≤511 to PLL Multiplier/Divider Definition Section
        3. 9.2.2.3 Crystal Oscillator Start-up
        4. 9.2.2.4 Frequency Adjustment with Crystal Oscillator Pulling
        5. 9.2.2.5 Unused Inputs/Outputs
        6. 9.2.2.6 Switching Between XO and VCXO Mode
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Related Links
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Member of Programmable Clock Generator Family
    • CDCE913/CDCEL913: 1-PLL, 3 Outputs
    • CDCE925/CDCEL925: 2-PLL, 5 Outputs
    • CDCE937/CDCEL937: 3-PLL, 7 Outputs
    • CDCE949/CDCEL949: 4-PLL, 9 Outputs
  • In-System Programmability and EEPROM
    • Serial Programmable Volatile Register
    • Nonvolatile EEPROM to Store Customer Settings
  • Flexible Input Clocking Concept
    • External Crystal: 8 MHz to 32 MHz
    • On-Chip VCXO: Pull Range ±150 ppm
    • Single-Ended LVCMOS Up to 160 MHz
  • Free Selectable Output Frequency Up to 230  MHz
  • Low-Noise PLL Core
    • PLL Loop Filter Components Integrated
    • Low Period Jitter (Typical 50 ps)
  • Separate Output Supply Pins
    • CDCE913: 3.3 V and 2.5 V
    • CDCEL913: 1.8 V
  • Flexible Clock Driver
    • Three User-Definable Control Inputs [S0/S1/S2], for Example, SSC Selection, Frequency Switching, Output Enable, or Power Down
    • Generates Highly Accurate Clocks for Video, Audio, USB, IEEE1394, RFID, Bluetooth®, WLAN, Ethernet™, and GPS
    • Generates Common Clock Frequencies Used With TI-DaVinci™, OMAP™, DSPs
    • Programmable SSC Modulation
    • Enables 0-PPM Clock Generation
  • 1.8-V Device Power Supply
  • Wide Temperature Range: –40°C to 85°C
  • Packaged in TSSOP
  • Development and Programming Kit for Easy PLL Design and Programming (TI Pro-Clock™)

2 Applications

    D-TVs, STBs, IP-STBs, DVD Players, DVD Recorders, and Printers

3 Description

The CDCE913 and CDCEL913 devices are modular PLL-based, low-cost, high-performance, programmable clock synthesizers. They generate up to three output clocks from a single input frequency. Each output can be programmed in-system for any clock frequency up to 230 MHz, using the integrated configurable PLL.

The CDCx913 has separate output supply pins, VDDOUT, which is 1.8 V for CDCEL913 and 2.5 V to 3.3 V for CDCE913.

The input accepts an external crystal or LVCMOS clock signal. A selectable on-chip VCXO allows synchronization of the output frequency to an external control signal.

The PLL supports SSC (spread-spectrum clocking) for better electromagnetic interference (EMI) performance.

The device supports nonvolatile EEPROM programming for easy customization of the device to the application. All device settings are programmable through the SDA/SCL bus, a 2-wire serial interface.

The CDCx913 operates in a 1.8-V environment. It operates in a temperature range of –40°C to 85°C.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
CDCE913
CDCEL913		 TSSOP (14) 5.00 mm × 4.40 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application Schematic

CDCE913 CDCEL913 scas849_typ_app.gif

4 Revision History

Changes from F Revision (April 2015) to G Revision

  • Changed data sheet title from: CDCEx913 Programmable 1-PLL VCXO Clock Synthesizer With 1.8-V, 2.5-V, and 3.3-V Outputs to: CDCE(L)913: Flexible Low Power LVCMOS Clock Generator With SSC Support for EMI ReductionGo

Changes from E Revision (March 2010) to F Revision

  • Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information sectionGo
  • Added in Figure 9, second S to SrGo
  • Changed 100 MHz < ƒVCO > 200 MHz; TO 80 MHz ≤ ƒVCO ≤ 230 MHz; and changed 0 ≤ p ≤ 7 TO 0 ≤ p ≤ 4Go
  • Changed under Example, fifth row, N", 2 places TO N'Go

Changes from D Revision (October 2009) to E Revision

  • Added PLL settings limits: 16≤q≤63, 0≤p≤7, 0≤r≤511, 0<N<4096 foot to PLL1 Configure Register TableGo
  • Added PLL settings limits: 16≤q≤63, 0≤p≤7, 0≤r≤511 to PLL Multiplier/Divider Definition SectionGo

Changes from C Revision (August 2007) to D Revision

  • Deleted sentence - A different default setting can be programmed upon customer request. Contact Texas Instruments sales or marketing representative for more information.Go