FDC37B78X データシートの表示（PDF） - SMSC -> Microchip

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FDC37B78X

Enhanced Super I/O Controller with ACPI Support, Real Time Clock and Consumer IR

SMSC -> Microchip 

Serial Port Infrared Timing

IRDA SIR RECEIVE

DATA 0

1

0

1

0

IRRX

t2

t1

t2 t1

0

11

0 11

n IRRX

Parameter

t1 Pulse Width at

t1 Pulse Width at

t1 Pulse Width at

t1 Pulse Width at

t1 Pulse Width at

t1 Pulse Width at

t1 Pulse Width at

t2 Bit Time at

t2 Bit Time at

t2 Bit Time at

t2 Bit Time at

t2 Bit Time at

t2 Bit Time at

t2 Bit Time at

min typ max units

1.4

1.6

2.71

µs

1.4 3.22 3.69

µs

1.4

4.8

5.53

µs

1.4

9.7 11.07 µs

1.4 19.5 22.13 µs

1.4

39 44.27 µs

1.4

78 88.55 µs

8.68

µs

17.4

µs

26

µs

52

µs

104

µs

208

µs

416

µs

1. Receive Pulse Detection Criteria: A received pulse is considered

received pulse is a minimum of 1.41µs.

2. IRRX: L5, CRF1 Bit 0

nIRRX: L5, CRF1 Bit 0 = 0

FIGURE 30 - IRDA SIR RECEIVE TIMING

254

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