CS9211 datasheet(51/62 Pages) NSC

No. de pieza	CS9211

Descripción Electrónicos	Geode CS9211 Graphics Companion Flat Panel Display Controller

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Fabricante Electrónico	NSC [National Semiconductor (TI)]

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Electrical Specifications (Continued)

5.5

AC CHARACTERISTICS

The following tables list the AC characteristics including

output delays, input setup requirements, input hold require-

ments and output float delays. The rising-clock-edge refer-

ence level VREF and other reference levels are shown in

Table 5-6. Input or output signals must cross these levels dur-

ing testing.

Input setup and hold times, illustrated in Figure 5-1, are

specified minimums that define the smallest acceptable

sampling window for which a synchronous input signal must

be stable for correct operation. The output delay time has a

minimum and a maximum, also illustrated in Figure 5-1.

Figure 5-1. Drive Level and Measurement Points for Switching Characteristics

Table 5-6. Drive Level and Measurement Points

for Switching Characteristics

Symbol

Voltage (V)

VREF

1.5

VIHD

3.0

VILD

0.0

CLK

OUTPUTS

INPUTS

VIHD

VILD

VREF

Valid Input

Valid Output n+1

Valid Output n

VREF

VILD

VIHD

Min

Max

Legend: A = Maximum Output Delay Specification

B = Minimum Output Delay Specification

C = Minimum Input Setup Specification

D = Minimum Input Hold Specification

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