LPC47M192 datasheet(217/228 Pages) SMSC

217 / 228 page

SMSC DS – LPC47M192

Page 217

Rev. 03/30/05

DATASHEET

Data

MIDI_Tx

Idle (No Data)

Stop Bit

Start Bit

FIGURE 40 - MIDI DATA BYTE

NAME

DESCRIPTION

MIN

TYP

MAX

UNITS

MIDI Data Bit Time

31.7

32.3

µsec

Note: The MIDI bit clock is 31.25kHz +/- 1%

FIGURE 41 - FAN OUTPUT TIMING

NAME

DESCRIPTION

MIN

TYP

MAX

UNITS

PWM Period (Note 1)

0.021

25.5

msec

PWM High Time (Note 2)

0.00033

25.1

msec

Note 1:

The period is 1/fout,where fout is programmed through the FANx and Fan Control registers. The tolerance on

fout is +/- 2%.

Note 2:

When Bit 0 of the FANx registers is 0, then the duty cycle is programmed through Bits[6:1] of these registers.

If Bits[6:1] = “000000” then the FANx pin is low. The duty cycle is programmable through Bits[6:1] to be between

1.56% and 98.44%. When Bit 0 is 1, the FANx pin is high.

FAN_TACHx

FIGURE 42 - FAN TACHOMETER INTPUT TIMING

NAME

DESCRIPTION

MIN

TYP

MAX

UNITS

Pulse Time (1/2 Revolution Time=30/RPM)

4tTACH

µsec

Pulse High Time

3tTACH

µsec

Pulse Low Time

tTACH

µsec

Note 1:

tTACH is the clock used for the tachometer counter. It is 30.52 * DVSR, where the divisor (DVSR) is

programmed in the Fan Control register.

FANx

LPC47M192 Datasheet(PDF) 217 Page - SMSC Corporation

LPC47M192 Datasheet(HTML) 217 Page - SMSC Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL