82575EB Datasheet, PDF (53/62 Pages) Intel Corporation – Intel® 82575EB Gigabit Ethernet Controller Datasheet

SMBus Interface — Intel^® 82575EB Gigabit Ethernet Controller
6.4.4 SMBus Interface
Table 17.
Symbol
F_SMB
T_BUF
T_HD:STA
T_SU:STA
T_SU:STO
T_HD:DAT
T_TIMEOUT
T_LOW
T_HIGH
SMBus AC Characteristics (master mode)
Parameter
SMBus Frequency
Time between STOP and START condition driven
by the device
Hold time after Start Condition. After this period,
the first clock is generated.
Start Condition setup time
Stop Condition setup time
Data hold time
Detect SMBClk low timeout
SMBClk low time
SMBClk high time
Min
26.2
Table 18.
Symbol
F_SMB
T_BUF
T_HD:STA
T_SU:STA
T_SU:STO
T_HD:DAT
T_TIMEOUT
T_LOW
T_HIGH
SMBus AC Characteristics (slave mode)
Parameter
SMBus Frequency
Time between STOP and START condition driven
by the device
Hold time after Start Condition. After this period,
the first clock is generated.
Start Condition setup time
Stop Condition setup time
Data hold time
Detect SMBClk low timeout
SMBClk low time
SMBClk high time
Min
26.2
Typ
74.4
6.56
6.72
6.88
0.48
5.76
6.56
Typ
74.4
6.56
6.72
TBD
6.88
0.48
5.76
6.56
Max
100
31.5
Units
kHz
µs
µs
µs
µs
µs
ms
µs
µs
Max
100
31.5
Units
kHz
µs
µs
µs
µs
µs
ms
µs
µs
317679-004
Revision: 2.11
January 2011
Intel^® 82575EB Gigabit Ethernet Controller
Datasheet
53