82801BA Datasheet, PDF (462/498 Pages) Intel Corporation – Intel 82801BA I/O Controller Hub 2 (ICH2) and Intel 82801BAM I/O Controller Hub 2 Mobile

Electrical Characteristics
Figure 16-12. Ultra ATA Mode (Terminating a DMA Burst)
DMARQ (drive)
DMACK# (host)
t88
t91
STOP (host)
DMARDY# (drive)
t87
Strobe (host)
DATA (host)
CRC
Figure 16-13. USB Rise and Fall Times
Rise Time
Fall Time
C_L
Differential
Data Lines
10%
90%
90%
10%
C_L
tR
tF
Full Speed: 4 to 20 ns a_L t=C50 pF
Low Speed: 75 ns a_Lt=C50 pF, 300 ns a_Lt =C350 pF
Figure 16-14. USB Jitter
Tperiod
Differential
Data Lines
Crossover
Points
Consecutive
Transitions
Paired
Transitions
16-22
82801BA ICH2 and 82801BAM ICH2-M Datasheet