10.6.2LED driver signals
Fault and Active LED signals are located in the
Table 30: LED drive signal
State | Current drive available | Output voltage |
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LED off, high | 0 < IOH < 100µA |
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LED on, low | IOL < | 0 < VOL < 0.8V |
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10.6.3FC Differential output
The serial output signal voltage characteristics are provided in Table 31. The outputs are not AC coupled in order to deliver maximum signal without rise and fall time degradation. You must AC couple the receiver to iso- late potentially different DC characteristics of the outputs and the receiver.
Table 31: | FC Differential output characteristics |
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Description | Parameter | Notes | |
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Serial output voltage swing | 600 < Vout < 1300 mV | Centered at 1.32V | |
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Figure 15 provides the data output valid eye diagram relative to the bit cell time.
Bit Time
Vout (mv)
XMIT Eye
Figure 15. Transmit eye diagram
10.6.4FC Differential input
The serial input signal voltage characteristics are provided in Table 32.
Table 32: | FC Differential input characteristics |
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Description | Parameter | Notes | |
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Serial input voltage swing | 200 < Vin < 1.300 mV | AC coupled | |
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Cheetah 15K.7 FC Product Manual, Rev. A | 71 |
