82801FB Datasheet, PDF (752/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

Electrical Characteristics
Table 22-16. SATA Interface Timings
Sym
Parameter
UI Operating Data Period
Rise Time
Fall Time
TX differential skew
COMRESET
COMWAKE transmit spacing
OOB Operating Data period
Min
Max
666.43
0.2
0.2
–
670.12
0.41
0.41
20
310.4
103.5
646.67
329.6
109.9
686.67
Units
ps
UI
UI
ps
ns
ns
ns
Figure
Notes
1
2
3
3
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 22-17. SMBus Timing
Sym
Parameter
Min Max
t130 Bus Tree Time Between Stop and Start Condition
4.7
–
t131
Hold Time after (repeated) Start Condition. After this
period, the first clock is generated.
4.0
–
t132 Repeated Start Condition Setup Time
4.7
–
t133 Stop Condition Setup Time
4.0
–
t134 Data Hold Time
0
–
t135 Data Setup Time
250
–
t136 Device Time Out
25
35
t137 Cumulative Clock Low Extend Time (slave device)
–
25
t138 Cumulative Clock Low Extend Time (master device)
–
10
Units
µs
µs
µs
µs
ns
ns
ms
ms
ms
Fig Notes
22-16
22-16
22-16
22-16
22-16 1
22-16
2
22-17 3
22-17 4
NOTE:
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.
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Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet