Data Sheet

Electrical/Mechanical Specification—Ethernet Controller I210
793
11.6.2.3 I
2
C AC Specification
Table 11-10 lists the timing of the I2C_CLK and I2C_DATA pins when operating in I
2
C mode.
11.6.2.4 Flash AC Specification
The I210 is designed to support a serial Flash. Applicable over the recommended operating range from
Ta = -40 C to +85 C, VCC3P3 = 3.3V, Cload = 1 TTL Gate and 16 pF (unless otherwise noted). For
Flash I/F timing specification Table 11-11 and Figure 11-4.
Table 11-10. I
2
C Timing Parameters
Symbol Parameter Min Typ Max Units
F
SCL
I2C_CLK Frequency 100 kHz
T
BUF
Time between Stop and Start condition driven by
the I210
4.7 µs
T
HD:STA
Hold Time After Start Condition. After this period,
the first clock is generated.
4µs
T
SU:STA
Start Condition Setup Time 4.7 µs
T
SU:STO
Stop Condition Setup Time 4 µs
T
HD:DAT
Data Hold Time 50
1
1. According to Atmel's AT24C01A/02/04 definition of the 2 wires interface.
ns
T
SU:DAT
Data Setup Time 0.25 µs
T
LOW
I2C_CLK Low Time 4.7 µs
T
HIGH
I2C_CLK High Time 4 µs
Figure 11-3. I
2
C I/F Timing Diagram