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IXF1104 4-Port Gigabit Ethernet Media Access Controller
Datasheet 153
Document Number: 278757
Revision Number: 007
Revision Date: March 25, 2004
7.12 LED AC Timing Specification
Figure 52 and Table 58 provide the LED AC timing specifications.
Figure 52. LED AC Interface Timing
Table 58. LED Interface AC Timing Parameters
Symbol Parameter Min Max Units
Tcyc LED_CLK cycle time 1.36 1.40 ms
Thi LED_CLK High time 680 700 µs
Tlow LED_CLK low time 680 700 µs
Tdatd LED_CLK falling edge to LED_DATA valid 2 5 ns
Tlath LED_CLK rising edge to LED_LATCH rising edge 690 700 µs
Tlatl LED_CLK falling edge to LED_LATCH falling edge 690 700 µs
LED_CLK
LED_DATA
L
ED_LATCH
Tcyc
Tlow
Thi
Tdatd
Tha
tl
Tlath