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IXF1104 4-Port Gigabit Ethernet Media Access Controller
Datasheet 138
Document Number: 278757
Revision Number: 009
Revision Date: 27-Oct-2005
Table 46. SPI3 Receive Interface Signal Parameters
Symbol Parameter Min Max Units
– RFCLK frequency 90 133 MHz
– RFCLK duty cycle 45 55 %
Tsrenb RENB setup time to RFCLK 1.8 – ns
Threnb RENB hold time to RFCLK 0.5 – ns
TPrdat RFCLK High to RDAT valid 1.5 3.7 ns
TPrprty RFCLK High to RPRTY valid 1.5 3.7 ns
TPrsop RFCLK High to RSOP valid 1.5 3.7 ns
TPreop RFCLK High to REOP valid 1.5 3.7 ns
TPrmod RFCLK High to RMOD valid 1.5 3.7 ns
TPrerr RFCLK High to RERR valid 1.5 3.7 ns
TPrval RFCLK High to RVAL valid 1.5 3.7 ns
TPrsx RFCLK High to RSX valid 1.5 3.7 ns
NOTES: Receive I/O Timing
1. When a setup time is specified between an input and a clock, the setup time is the time in nanoseconds
from the 1.4-volt point of the input to the 1.4-volt point of the clock.
2. When a hold time is specified between an input and a clock, the hold time is the time in nanoseconds from
the 1.4-volt point of the clock to the 1.4-volt point of the input.
3. Output propagation time is the time in nanoseconds from the 1.4-volt point of the reference signal to the
1.4-volt point of the output.
4. Maximum propagation delays are measured with a 30 pF load when operating OIF-SPI3 standard 104
MHz. Over-clocked rates of 125 MHz or higher are measured using a load of 20 pF.