1 Features
1• Member of Programmable Clock Generator
Family
– CDCEx913: 1-PLL, 3 Outputs
– CDCEx925: 2-PLL, 5 Outputs
– CDCEx925: 3-PLL, 7 Outputs
– CDCEx949: 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 60 ps)
• Separate Output Supply Pins
– CDCE925: 3.3 V and 2.5 V
– CDCEL925: 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 CDCE925 and CDCEL925 are modular PLLbased
low-cost, high-performance, programmable
clock synthesizers, multipliers, and dividers. They
generate up to five output clocks from a single input
frequency. Each output can be programmed insystem
for any clock frequency up to 230 MHz, using
up to two independent configurable PLLs.
The CDCEx925 has a separate output supply pin,
VDDOUT, which is 1.8 V for CDCEL925 and 2.5 V to
3.3 V for CDCE925.
The input accepts an external crystal or LVCMOS
clock signal. In case of a crystal input, an on-chip
load capacitor is adequate for most applications. The
value of the load capacitor is programmable from 0 to
20 pF. Additionally, an on-chip VCXO is selectable
which allows synchronization of the output frequency
to an external control signal, that is, PWM signal.