82801CA Datasheet, PDF (479/521 Pages) Intel Corporation – I/O Controller Hub 3-S (ICH3-S)

Electrical Characteristics
Figure 16-12. Ultra ATA Mode (Terminating a DMA Burst)
DMARQ
(drive)
t87
DMACK# (host)
STOP
(host)
t99c
DMARDY#
(drive)
t87
Strobe
(host)
DATA
(host)
Figure 16-13. USB Rise and Fall Times
t88
t91
t99a
t91
t92 t93
CRC
U ltra _ A TA _ Te rm
Rise Time
Fall Time
C_L
Differential
Data Lines
10%
90%
90%
10%
C_L
tR
tF
Low Speed: 75 ns at C_L = 50 pF, 300 ns at C_L = 350 pF
Full Speed: 4 to 20 ns at C_L = 50 pF
Figure 16-14. USB Jitter
T period
Differential
Data Lines
Jitter
Crossover
Points
Consecutive
Transitions
Paired
Transitions
Intel^® 82801CA ICH3-S Datasheet
USB Ti i
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