FDC37B78X View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

FDC37B78X

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

SMSC -> Microchip 

DISK DRIVE TIMING

nDIR

nSTEP

nDS0-3

nINDEX

nRDATA

nWDATA

nIOW

nDS0-1,

MTR0-1

t3

t4

t1

t2

t5

t6

t7

t8

t9

t9

FIGURE 20 - DISK DRIVE TIMING (AT MODE ONLY)

TABLE 99 - DISK DRIVE TIMING (AT MODE ONLY)

NAME

DESCRIPTION

MIN

TYP

t1 nDIR Set Up to STEP Low

4

t2 nSTEP Active Time Low

24

t3 nDIR Hold Time after nSTEP

96

t4 nSTEP Cycle Time

132

t5 nDS0-1 Hold Time from nSTEP Low

20

t6 nINDEX Pulse Width

2

t7 nRDATA Active Time Low

40

t8 nWDATA Write Data Width Low

.5

t9 nDS0-1, MTRO-1 from End of nIOW

25

*X specifies one MCLK period and Y specifies one WCLK period.

MCLK = 16 x Data Rate (at 500 kb/s MCLK = 8 MHz)

WCLK = 2 x Data Rate (at 500 kb/s WCLK = 1 MHz)

MAX

UNITS

X*

X*

X*

X*

X*

X*

ns

Y*

ns

238

Share Link: