EP7212-CV-A View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

EP7212-CV-A

High-Performance, Low-Power System-on-Chip with LCD Controller and Digital Audio Interface (DAI)

Cirrus Logic 

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EP7212

3.15.1 Free Running Mode

3.15.2 Prescale Mode

In the free running mode, the counter will wrap

around to 0xFFFF when it under flows and it will

continue to count down. Any value written to TC1

or TC2 will be decremented on the second edge of

the selected clock.

In the prescale mode, the value written to TC1 or

TC2 is automatically re-loaded when the counter

under flows. Any value written to TC1 or TC2 will

be decremented on the second edge of the selected

clock. This mode can be used to produce a pro-

grammable frequency to drive the buzzer (i.e., with

TC1) or generate a periodic interrupt. The formula

is F=(500 kHz) / (n+1).

Pixel 1 Pixel 2 Pixel 3 Pixel 4

Gray scale

Gray scale

Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7

4 Bits per pixel

Pixel 1 Pixel 2 Pixel 3 Pixel 4

Gray scale Gray scale Gray scale Gray scale

Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7

2 Bits per pixel

Pixel 1 Pixel 2 Pixel 3 Pixel 4

Gray scale Gray scale Gray scale Gray scale

Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7

1 Bit per pixel

Figure 11. Video Buffer Mapping

48

DS474PP1

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