Data Sheet

Ethernet Controller I210 —Electrical/Mechanical Specification
792
Table 11-9 lists the timing requirements of the I210 when it is the receiver of the indicated signal.
T
TIMEOUT
Detect SMB_CLK Low Timeout3535353535ms
T
LOW
SMB_CLK Low Time 0.5 4.7 1.3 0.5 µs
T
HIGH
SMB_CLK High Time 0.26 4 0.6 0.26 µs
Table 11-9. SMBus Timing Parameters (Slave Mode)
Symbol Parameter
Min 100
KHz
1
1. Specifications based on SMBus specification.
Min 400
KHz
2
2. Specifications based on I2C specification for Fast-mode (400 KHz).
Min 1
MHz
3
3. Specifications based on I2C specification rev 03 for Fast-mode Plus (1 MHz).
Max Units
F
SMB
SMBus Frequency 10 10 10 1000 kHz
T
BUF
Time between Stop and Start condition
driven by partner.
4.7 1.3 0.5 µs
T
HD:STA
Hold Time After Start Condition. After this
period, the first clock is generated.
4 0.6 0.26 µs
T
SU:STA
Start Condition Setup Time 4.7 0.6 0.26 µs
T
SU:STO
Stop Condition Setup Time 4 0.6 0.26 µs
T
HD:DAT
Data Hold Time 300 100 0 ns
T
SU:DAT
Data Setup Time 250 100 50 ns
T
LOW
SMB_CLK Low Time 4.7 1.3 0.5 µs
T
HIGH
SMB_CLK High Time 4 0.6 0.26 µs
Figure 11-2. SMBus I/F Timing Diagram
Table 11-8. SMBus Timing Parameters (Master Mode) (Continued)
Symbol Parameter Min
Typ 100
Khz
Typ 400
Khz
Typ 1
MHz
Max Units
P
t
BUF
t
R
t
HD;STA
S
t
HD;STA
t
LOW
t
HD;DAT
t
HIGH
t
F
t
SU;DAT
t
SU;STA
t
SU;STO
SMB_CLK
P
S
SMB_DATA