STV9432TAP View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

STV9432TAP

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

STMicroelectronics 

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STV9432TAP

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.

PWM1 Signal

V1[7:0]

0

tOSC

256 x tOSC

1

128

255

10.1 - PWM REGISTERS

Pulse Width Modulator 1

4038

V17

V16

V15

V14

V13

V12

V11

V10

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

Pulse Width Modulator 2

4039

V27

V26

V25

V24

V23

V22

V21

V20

V2[7:0] : Digital value of the 2nd PWM D to A converter (Pin 14)

Pulse Width Modulator 3

403A

V37

V36

V35

V34

V33

V32

V31

V30

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

Pulse Width Modulator 4

403B

V47

V46

V45

V44

V43

V42

V41

V40

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

Pulse Width Modulator 5

403C

V57

V56

V55

V54

V53

V52

V51

V50

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.

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