PC87307VUL National Semiconductor, PC87307VUL Datasheet - Page 205

• Manufacturer Part Number: PC87307VUL
• Description: PC87307/PC97307 Plug and Play Compatible and PC97 Compliant SuperI/O
• Manufacturer: National Semiconductor

13.3.14 Drive Control Timing
13.3.15 Read Data Timing
t
t
t
t
t
t
DRV
DST
IW
STD
STP
STR
Symbol
RDATA
a. Not tested. Guaranteed by design.
WR
DR1,0
MTR1,0
DIR
STEP
INDEX
DR1,0 and MTR1,0 from End of WR
DIR Setup to STEP Active
Index Pulse Width
DIR Hold from STEP Inactive
STEP Active High Pulse Width
STEP Rate Time (See Table 5-26 on page 106.)
t
RDW
Symbol
Read Data Pulse Width
Parameter
FIGURE 13-19. Drive Control Timing
TABLE 13-50. Drive Control Timing
Parameter
FIGURE 13-20. Read Data Timing
TABLE 13-51. Read Data Timing
a
Device Description
t
RDW
t
DST
t
DRV
205
t
IW
t
STP
t
STR
Min
50
t
Min
100
STR
6
8
1
Max
t
STD
t
DRV
Max
110
nsec
Unit
msec
msec
nsec
nsec
Unit
sec
sec
www.national.com