L64733C datasheet(36/48 Pages) LSI

36 / 48 page

L64733/L64734 Tuner and Satellite Receiver Chipset

L64734 AC Timing

This section includes AC timing information for the L64734. During AC

testing, HIGH inputs are driven to 3.0 V, and LOW inputs are driven to

0 V. For transitions between HIGH, LOW, and invalid states, timing

measurements are made at 1.5 V, as shown in Figure 8.

Figure 8

AC Test Load and Waveform for Standard Outputs

For 3-state outputs, timing measurements are made from the point at

which the output turns ON or OFF. An output is ON when its voltage is

greater than 2.5 V or less than 0.5 V. An output is OFF when its voltage

is less than VDD − 0.5 V or greater than 0.5 V, as shown in Figure 9.

VREFP

Reference Voltage, Positive

Input/Output

VREFN

Reference Voltage, Negative

Input/Output

VMID

Reference Voltage, Middle

Input/Output

XCTR_IN

Control Input

Input

XCTR[3:0]

Control Output/Sync Status Flag

Output

XOIN

Crystal Oscillator In

Input

XOOUT

Crystal Oscillator Out

Output

Table 10

L64734 Pin Description Summary (Cont.)

Mnemonic

Description

Type

(Sheet 3 of 3)

CL = 15 pF

Test

Output

Point

1.5 V

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