CS89712 datasheet(42/170 Pages) CIRRUS

tên linh kiện	CS89712

Giải thích chi tiết về linh kiện	HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH 10BASE-T ETHERNET CONTROLLER

PDF	170 Pages

Scroll/Zoom	100%

nhà sản xuất	CIRRUS [Cirrus Logic]

Trang chủ	http://www.cirrus.com

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CS89712

DS502PP2

2.19.1

Free Running 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.

2.19.2

Prescale Mode

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).

2.20 Real-Time Clock

The CS89712 contains a 32-bit Real-Time Clock

(RTC). This can be written to and read from in the

Pixel 1 Pixel 2 Pixel 3 Pixel 4

Bit 0 Bit 1

Bit 2 Bit 3 Bit 4

Bit 5 Bit 6 Bit 7

Gray scale

4 Bits per pixel

Pixel 1 Pixel 2 Pixel 3 Pixel 4

Bit 0

Bit 1 Bit 2 Bit 3 Bit 4

Bit 5 Bit 6 Bit 7

Gray scale Gray scale

2 Bits per pixel

Gray scale

Pixel 1 Pixel 2 Pixel 3 Pixel 4

Bit 0 Bit 1

Bit 2 Bit 3 Bit 4

Bit 5 Bit 6 Bit 7

Gray scale

1 Bit per pixel

Gray scale Gray scale

Gray scale

Figure 11. Video Buffer Mapping

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