FDC37B80X View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

FDC37B80X

PC98/99 compliant enhanced super I/O controller with Keyboard / Mouse Wake-Up / 5 Volt Operation

SMSC -> Microchip 

DATA 0

1

0

1

0

0

11

0 11

IRRX

t2

t1

t2 t1

n IRRX

Parameter

t1 Pulse Width at 115kbaud

t1 Pulse Width at 57.6kbaud

t1 Pulse Width at 38.4kbaud

t1 Pulse Width at 19.2kbaud

t1 Pulse Width at 9.6kbaud

t1 Pulse Width at 4.8kbaud

t1 Pulse Width at 2.4kbaud

t2 Bit Time at 115kbaud

t2 Bit Time at 57.6kbaud

t2 Bit Time at 38.4kbaud

t2 Bit Time at 19.2kbaud

t2 Bit Time at 9.6kbaud

t2 Bit Time at 4.8kbaud

t2 Bit Time at 2.4kbaud

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

Notes:

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

received pulse is a minimum of 1.41µs.

2. IRRX: L5, CRF1 Bit 0 = 1

nIRRX: L5, CRF1 Bit 0 = 0 (default)

FIGURE 19 - IrDA RECEIVE TIMING

188

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