NH82801DB S L8DE Intel, NH82801DB S L8DE Datasheet - Page 535

• Manufacturer Part Number: NH82801DB S L8DE
• Manufacturer: Intel

Specifications of NH82801DB S L8DE

• Lead Free Status / RoHS Status: Compliant

Intel
®
Table 17-14. IOAPIC Bus Timing
Table 17-15. SMBus Timing
Table 17-16. AC ’97 Timing
82801DB ICH4 Datasheet
NOTE: The Min AC column indicates the minimum times required by the SMBus and/or I
NOTES:
1. A device will timeout when any clock low exceeds this value.
2. t137 is the cumulative time a slave device is allowed to extend the clock cycles in one message from the
3. t138 is the cumulative time a master device is allowed to extend its clock cycles within each byte of a
4. t134 has a minimum timing for I
Sym
t130
t131
t132
t133
t134
t135
t136
t137
t138
Sym
t140
t141
t142
Sym
t120
t121
t122
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.
message as defined from start-to-ack, ack-to-ack or ack-to-stop.
Bus Tree Time Between Stop and Start Condition
Hold Time after (repeated) Start Condition. After this
period, the first clock is generated.
Repeated Start Condition Setup Time
Stop Condition Setup Time
Data Hold Time
Data Setup Time
Device Time Out
Cumulative Clock Low Extend Time (slave device)
Cumulative Clock Low Extend Time (master device)
ICH4 tolerates these timings on both its SMBus and SMLink interfaces.
ACSDIN[2:0] Setup to Falling Edge of BITCLK
ACSDIN[2:0] Hold from Falling Edge of BITCLK
ACSYNC, ACSDOUT valid delay from rising edge of
BITCLK
APICCD[1:0]# Valid Delay from APICCLK Rising
APICCD[1:0]# Setup Time to APICCLK Rising
APICCD[1:0]# Hold Time from APICCLK Rising
Parameter
Parameter
Parameter
2
C of 0 ns, while the minimum timing for SMBus is 300 ns.
Min
Min
8.5
3.0
Min
3.0
250
10
10
4.7
4.0
4.7
4.0
25
0
Max
Max
12.0
15
Max
35
25
10
Electrical Characteristics
Units
Units
ns
ns
ns
Units
ns
ns
ns
ms
ms
ms
µs
µs
µs
µs
ns
ns
2
C specifications. The
Notes
4
1
2
3
Notes
Notes
17-23
17-23
17-23
17-17
17-17
17-17
17-17
17-17
17-17
17-17
17-17
17-3
17-4
17-4
Fig
Fig
Fig
535