STV9432TAP datasheet(14/25 Pages) STMICROELECTRONICS

Teilenummer	STV9432TAP

Bauteilbeschribung	100MHz OSD FOR MONITOR INCLUDING BEAM CURRENTS, VIDEO TIMING ANALYZER AND PWMs

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STV9432TAP

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10 - DIGITAL TO ANALOG PWM OUTPUTS

The five to A outputs PWM1 toc5 of the STV9432TAP are pulse width modulator type converter outputs.

The frequency of the output signal is fOSC: 256 and the duty cycle is: Value [7:0]: 256. After an external

low pass filter, the voltage value of the output is: Value [7:0] x VDD : 256.

Figure 8.

10.1 - PWM REGISTERS

Pulse Width Modulator 1

V1[7:0] : Digital value of the 1st PWM D to A converter (Pin 13)

Pulse Width Modulator 2

V2[7:0] : Digital value of the 2

nd PWM D to A converter (Pin 14)

Pulse Width Modulator 3

V3[7:0] : Digital value of the 3rd PWM D to A converter (Pin 15)

Pulse Width Modulator 4

V4[7:0] : Digital value of the 4th PWM D to A converter (Pin 16)

Pulse Width Modulator 5

V5[7:0] : Digital value of the 5th PWM D to A converter (Pin 17)

Note: Power-on reset default value of PWM register is

OOH.

4038

V17

V16

V15

V14

V13

V12

V11

V10

V1[7:0]

128

255

PWM1 Signal

OSC

256 x t

OSC

4039

V27

V26

V25

V24

V23

V22

V21

V20

403A

V37

V36

V35

V34

V33

V32

V31

V30

403B

V47

V46

V45

V44

V43

V42

V41

V40

403C

V57

V56

V55

V54

V53

V52

V51

V50

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