CDCEL937
- Member of Programmable Clock Generator Family
- CDCEx913: 1PLL, 3 Outputs
- CDCEx925: 2PLL, 5 Outputs
- CDCEx937: 3PLL, 7 Outputs
- CDCEx949: 4LL, 9 Outputs
- In-System Programmability and EEPROM
- Serial Programmable Volatile Register
- Nonvolatile EEPROM to Store Customer Setting
- Flexible Input Clocking Concept
- External Crystal: 8MHz to 32MHz
- On-Chip VCXO: Pull Range ±150ppm
- Single-Ended LVCMOS up to 160MHz
- Free Selectable Output Frequency up to 230MHz
- Low-Noise PLL Core
- PLL Loop Filter Components Integrated
- Low Period Jitter (Typical 60ps)
- Separate Output Supply Pins
- CDCE937: 3.3V and 2.5V
- CDCEL937: 1.8V
- 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 0PPM Clock Generation
- 1.8V 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™)
The CDCE937 and CDCEL937 devices are modular PLL-based low cost, high-performance, programmable clock synthesizers, multipliers and dividers. The devices generate up to 7 output clocks from a single input frequency. Each output can be programmed in-system for any clock frequency up to 230MHz, using up to three independent configurable PLLs.
The CDCEx937 has separate output supply pins, VDDOUT, which is 1.8V for CDCEL937 and to 2.5V to 3.3V for CDCE937.
The input accepts an external crystal or LVCMOS clock signal. If an external crystal is used, an on-chip load capacitor is adequate for most applications. The value of the load capacitor is programmable from 0 to 20pF. Additionally, an on-chip VCXO is selectable which allows synchronization of the output frequency to an external control signal, that is, PWM signal.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | CDCEx937 Flexible Low Power LVCMOS Clock Generator With SSC Support For EMI Reduction datasheet (Rev. I) | PDF | HTML | 2024/12/11 | ||
| 使用指南 | CDCE(L)9XX & CDCEx06 Programming Evaluation Module Manual (Rev. A) | 2010/11/22 | ||||
| 應用說明 | Troubleshooting I2C Bus Protocol | 2009/10/19 | ||||
| 應用說明 | Usage of I2C for CDCE(L)949, CDCE(L)937, CDCE(L)925, CDCE(L)913 | 2009/9/23 | ||||
| 應用說明 | Generating Low Phase-Noise Clocks for Audio Data Converters from Low Frequency | 2008/3/31 | ||||
| 應用說明 | Practical consideration on choosing a crystal for CDCE(L)9xx family | 2008/3/24 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
CDCEL9XXPROGEVM — CDCE(L)949 系列 EEPROM 程式設計基板
The clock generator CDCE(L)949 family has integrated EEPROM that allows the default frequency settings to be saved upon start up. CDCEL9XXPROGEVM is a programming board that allows a fast programming of prototyping samples or small production quantities. It applies to all 8 devices in the family: (...)
SCAC131 — Drivers for the CDCEL9xx programmer EVM
CLOCKPRO — ClockPro Software
TI's ClockPro software allows users to program/configure the following devices in a friendly GUI interface:
- CDCE949
- CDCE937
- CDCE925
- CDCE913
- CDCE906
- CDCE706
- CDCEL949
- CDCEL937
- CDCEL925
- CDCEL913
It is intended to be used with the evaluation modules of the above devices.
SCAC073 — TI-Pro-Clock Programming Software
CLOCK-TREE-ARCHITECT — 時鐘樹架構程式設計軟體
時鐘樹架構是一款時鐘樹合成工具，可根據您的系統需求產生時鐘樹解決方案，進而簡化您的設計流程。此工具可從廣泛的計時產品資料庫中汲取資料，產生系統級多晶片計時解決方案。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| TSSOP (PW) | 20 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。