DSC2133/DSC2233

DS20006231A-page 6

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2022 Microchip Technology Inc. and its subsidiaries

4.0

OPERATIONAL DESCRIPTION

The DSC2133/DSC2233 are dual LVDS oscillators

consisting of a MEMS resonator and a support PLL IC.

The outputs are generated through independent 8-bit

programmable dividers from the output of the internal

PLL.

DSC2133/DSC2233 allow for easy programming of the

power-up, the initial output frequencies are controlled

by an internal pre-programmed memory (OTP). This

memory stores all coefficients required by the PLL for

two different default frequency pairs. The control pin

(FS) selects the initial pair. Once the device is powered

up, a new output frequency pair can be programmed.

Programming details are provided in the Programming

Guide. Standard default frequency pairs are described

in the following sections. Microchip supports customer

defined versions of the DSC2133/DSC2233.

When Enable (pin 1) is floated or connected to VDD,

the DSC2133/2233 is in operational mode. Driving

Enable to ground will tri-state both output drivers

(high-impedance mode).