Texas Instruments CDCM7005 - Manuals

Page 5 - Preface; Read This First; About This Manual

Related Documentation From Texas Instruments iii Preface Read This First About This Manual This manual explains how to use the CDCM7005 evaluation module (EVM)and provides guidelines to build the customer’s own systems. The manualincludes schematics, layout, bill of materials, and a software descrip...

Page 6 - Contents; External Active Loop Filter Using OPA341

Contents v Contents 1 Introduction 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 CDCM7005 Functional Block Diagram 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Page 7 - Figures; CDCM7005 With a Passive Loop Filter Configuration; Tables

Contents vi Figures 3 − 1 Board View 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 − 1 Screen View 4-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Page 8 - Introduction; Topic; Chapter 1

1-1 Introduction Introduction The CDCM7005 is a high-performance, low phase noise and low skew clocksynchronizer that synchronizes an on-board voltage controlled crystaloscillator (VC(X)O) frequency to an external reference clock. The deviceoperates up to 2.2 GHz. The PLL loop bandwidth and damping ...

Page 10 - Quick Start; Chapter 2

2-1 Quick Start Quick Start In order to setup the EVM quickly and to take some measurements at defaultsettings, the following actions are required: - Supply 3.3 V to P1, LED D4 will be on. - Apply a single-ended reference clock to the reference clock inputPRI_REF (pin A1) or SEC_REF (pin B1). For de...

Page 11 - EVM Hardware; Chapter 3

3-1 EVM Hardware EVM Hardware This chapter discusses the EVM hardware. Topic Page 3.1 Board View and Connector Location 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2 Hardware Configuration 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Chapter 3

Page 12 - Board View and Connector Location; Figure 3; Hardware Configuration

Board View and Connector Location 3-2 3.1 Board View and Connector Location Figure 3 − 1. Board View 3.2 Hardware Configuration This section describes the board configuration using on-board jumpers andsolder bridges. 3.2.1 Power Supply (P1, P2) - Supply 3.3 V ± 10% on P1 and P2 using a stabilized ex...

Page 13 - Table 3

Hardware Configuration 3-3 EVM Hardware 3.2.3 Programming Interfaces (J30, J31) The SPI of the device is used for writing to the control register of the device.It consists of three control lines CTRL_CLK, CTRL_DATA, and CTRL_LE.There are four 30-bit wide RAM registers, which can be addressed by the ...

Page 15 - Serial Peripheral Interface (SPI) Software; Chapter 4

4-1 Serial Peripheral Interface (SPI) Software Serial Peripheral Interface (SPI) Software This chapter discusses the serial peripheral interface software. Topic Page 4.1 Functional Description 4-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2 Software Installati...

Page 16 - Functional Description; Figure 4; Software Installation

Functional Description 4-2 4.1 Functional Description Programming software here as described is intended for programming the in-ternal control register of the CDCM7005. The software runs under Win-dows98, NT, 2000, and XP. A quick installation is required prior to use. See the Software Installation ...

Page 17 - Application Circuit Diagram; Chapter 5

5-1 Application Circuit Diagram Application Circuit Diagram This chapter discusses the application circuit diagram. Topic Page 5.1 Application Circuit Diagram 5-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Chapter 5

Page 18 - Application Circuit Diagram; Figure 5

Application Circuit Diagram 5-2 5.1 Application Circuit Diagram The following applications sections the two loop filter configurations arediscussed. 5.1.1 Passive Loop Filter The passive loop filter is a second order filter (two poles, one zero). The zerois required for the overall loop stability. R...

Page 19 - External Active Loop Filter Using OPA341

Application Circuit Diagram 5-3 Application Circuit Diagram 5.1.2 External Active Loop Filter Using OPA341 Figure 5 − 2. CDCM7005 With a External Active Loop Filter Using OPA341 SPI PECL_OUT_B PECL_OUT V_CTRL VC(X)O CP_OUT CTRL_LECTRL_DATACTRL_CLK CDCM7005 PLL_LOCK STATUS_VC(X)O STATUS_REF Vcc Low-P...

Page 20 - Chapter 6

6-1 Parts List, Board Layout, and Schematics Parts List, Board Layout, and Schematics This chapter contains the parts list, board layout, and schematics for theCDCM7005 EVM. Topic Page 6.1 Parts List 6-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 24 - Figure 6

Parts List 6-5 Parts List, Board Layout, and Schematics 6.2 Board Layout Figure 6 − 1. Component View and Silkscreen (Top View)