307013-003 Datasheet, PDF (810/848 Pages) Intel Corporation – Intel I/O Controller Hub 7

Electrical Characteristics
Table 23-16. SATA Interface Timings (Desktop and Mobile Only)
Sym
Parameter
Min
Max Units Notes Figure
UI Gen I Operating Data Period
666.43 670.12 ps
UI-2 Gen II Operating Data Period (3Gb/s)
333.21 335.06 ps
t120 Rise Time
0.2
0.41
UI
1
t121 Fall Time
0.2
0.41
UI
2
t122
t123
t124
t125
TX differential skew
COMRESET
COMWAKE transmit spacing
OOB Operating Data period
—
20
ps
310.4 329.6
ns
3
103.5 109.9
ns
3
646.67 686.67 ns
4
NOTES:
1. 20% – 80% at transmitter
2. 80% – 20% at transmitter
3. As measured from 100 mV differential crosspoints of last and first edges of burst.
4. Operating data period during Out-Of-Band burst transmissions.
Table 23-17. SMBus Timing
Sym
Parameter
Min Max Units Notes Figure
t130
Bus Tree Time Between Stop and Start
Condition
4.7
—
µs
23-16
Hold Time after (repeated) Start Condition.
t131 After this period, the first clock is
4.0
—
µs
generated.
23-16
t132 Repeated Start Condition Setup Time
4.7
—
µs
23-16
t133 Stop Condition Setup Time
t134 Data Hold Time
4.0
—
µs
23-16
0
—
ns
1
23-16
t135 Data Setup Time
t136 Device Time Out
250
—
ns
25
35
ms
23-16
2
t137
Cumulative Clock Low Extend Time (slave
device)
—
25
ms
3
23-17
t138
Cumulative Clock Low Extend Time (master
device)
—
10
ms
4
23-17
NOTES:
1. t134 has a minimum timing for I²C of 0 ns, while the minimum timing for SMBus is 300 ns.
2. A device will timeout when any clock low exceeds this value.
3. t137 is the cumulative time a slave device is allowed to extend the clock cycles in one message from the initial
start to stop. If a slave device exceeds this time, it is expected to release both its clock and data lines and
reset itself.
4. t138 is the cumulative time a master device is allowed to extend its clock cycles within each byte of a message
as defined from start-to-ack, ack-to-ack or ack-to-stop.
810
Intel ^® ICH7 Family Datasheet