DLPC4420ZPC datasheet(32/49 Pages) TI

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Figure 8-2. Typical 4K UHD LPCW Display Application

8.2.1 Design Requirements

The display controller is the digital interface between the DMD and the rest of the system. The display controller

takes digital input from front end digital receivers and drives the DMD over a high speed interface. The display

controller also generates the necessary signals (data, protocols, timings) required to display images on the

DMD. Some systems require a dual controller to format the incoming data before sending it to the DMD. Reliable

operation of the DMD is only insured when the DMD and the controller are used together in a system. In addition

to the DLP devices included in the chipset, other devices may be needed such as a flash part to store the

software and firmware.

8.2.1.1 Recommended MOSC Crystal Oscillator Configuration

Table 8-1. Crystal Port Characteristics

PARAMETER

NOMINAL

UNIT

MOSC TO GROUND Capacitance

1.5

MOSCZ TO GROUND Capacitance

1.5

Table 8-2. Recommended Crystal Configuration

PARAMETER

RECOMMENDED

UNIT

Crystal circuit configuration

Parallel resonant

Crystal type

Fundamental (1st Harmonic)

Crystal nominal frequency

MHz

Crystal frequency temperature stability

+/- 30

PPM

Overall crystal frequency tolerance (including

accuracy, stability, aging, and trim sensitivity)

+/- 100

PPM

Crystal Equivalent Series Resistor (ESR)

50 max

Crystal load

Crystal shunt load

7 max

RS drive resistor (nominal)

100

RFB feedback resistor (nominal)

MΩ

DLPC4420

DLPS222 – DECEMBER 2021

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