MFC2000 datasheet(170/426 Pages) ETC

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MFC2000 Multifunctional Peripheral Controller 2000

Hardware Description

7-22

Conexant

100723A

cycle_start

LEDCtrl[0]enb

LEDCtrl[0]enb_status

LEDCtrl[0]

(write to ScanCtrl reg)

(read fromScanCtrl Status reg)

ScanStartDelay

LED0PosEdge

LED0NegEdge

LED0PWMClkDiv[2:0]

LED0PWMDutyCycle[7:0]

write '1'

write '0'

synchronized to cycle_start

LEDCtrl[1]enb

LEDCtrl[1]enb_status

LEDCtrl[1]

(write to ScanCtrl reg)

(read fromScanCtrl Status reg)

ScanStartDelay

LED1PosEdge

LED1NegEdge

LED1PWMClkDiv[2:0]

LED1PWMDutyCycle[7:0]

write '1'

write '0'

synchronized to cycle_start

LEDCtrl[2]enb

LEDCtrl[2]enb_status

LEDCtrl[2]

(write to ScanCtrl reg)

(read fromScanCtrl Status reg)

ScanStartDelay

LED2PosEdge

LED2NegEdge

LED2PWMClkDiv[2:0]

LED2PWMDutyCycle[7:0]

write '1'

write '0'

synchronized to cycle_start

write ScanCtrl[13:11]

with 100b

vsc_irq

time

write to vsc_irq

clear register

vsc_irq comes

write ScanCtrl[13:11]

with 010b

write to vsc_irq

clear register

vsc_irq comes

write ScanCtrl[13:11]

with 001b

write to vsc_irq

clear register

vsc_irq comes

(place = 0)

[led-time.vsd]

Figure 7-6. Untitled Timing Diagram

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