Description
The 5P49EE802 is a programmable clock generator intended
for low power, battery operated consumer applications. There
are four internal PLLs, each individually programmable,
allowing for up to eight different output frequencies. The
frequencies are generated from a single reference clock. The
reference clock can come from either a TCXO or fundamental
mode crystal. An additional 32kHz crystal oscillator is
available to provide a real time clock or non-critical
performance MHz processor clock.
The 5P49EE802 can be programmed through the use of the
I
2C interfaces. The programming interface enables the device
to be programmed when it is in normal operation or what is
commonly known as in system programmable. An internal
EEPROM allows the user to save and restore the
configuration of the device without having to reprogram it on
power-up.
Each of the four PLLs has an 8-bit reference divider and a
11-bit feedback divider. This allows the user to generate four
unique non-integer-related frequencies. The PLL loop
bandwidth is programmable to allow the user to tailor the PLL
response to the application. For instance, the user can tune
the PLL parameters to minimize jitter generation or to
maximize jitter attenuation. Spread spectrum generation is
supported on one of the PLLs.
Spread spectrum generation is supported on one of the PLLs.
The device is specifically designed to work with display
applications to ensure that the spread profile remains
consistent for each HSYNC in order to reduce ROW noise. It
also may operate in standard spread spectrum mode.
There are total seven 8-bit output dividers. Outputs are
LVCMOS. The outputs are connected to the PLLs via the
switch matrix. The switch matrix allows the user to route the
PLL outputs to any output bank. This feature can be used to
simplify and optimize the board layout. In addition, each
output's slew rate and enable/disable function can be
programmed.

Features
• Four internal PLLs
• Internal non-volatile EEPROM
• Internal I2C EEPROM master interface
• FAST (400kHz) mode I2C serial interfaces
• Input Frequencies
– TCXO: 10 MHz to 40 MHz
– Crystal: 8 MHz to 30 MHz
– RTC Crystal: 32.768 kHz
• Output Frequency Ranges: kHz to 120 MHz
• Each PLL has an 8-bit reference divider and a 11-bit
feedback-divider
• 8-bit output-divider blocks
• One of the PLLs support Spread Spectrum generation
capable of configuration to pixel rate, with adjustable
modulation rate and amplitude to support video clock with
no visible artifacts
• I/O Standards:
– Outputs - 1.8V/2.5V/3.3 V LVTTL/ LVCMOS
– 3 independent adjustable VDDO groups
• Programmable Slew Rate Control
• Programmable Loop Bandwidth Settings
• Programmable output inversion to reduce bimodal jitter
• Individual output enable/disable
• Power-down/Sleep mode
– 10A max in power down mode
– 32kHz clock output active sleep mode
– 100A max in sleep mode
• 1.8V VDD Core Voltage
• Available in 28 pin 4x4mm QFN packages
• -40 to +85°C Industrial Temp operation