S2060 datasheet(21/22 Pages) AMCC

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S2060

GIGABIT ETHERNET TRANSCEIVER

March 7, 2001 / Revision H

OUTPUT LOAD

The S2060 serial outputs require a resistive load to

set the output current. The recommended resistor

value is 150

Ω to ground. This value can be varied to

adjust drive current, signal voltage swing, and power

usage on the board.

ACQUISITION TIME

With the input eye diagram shown in Figure 19, the

S2060 will recover data with a 10E-9 BER within the

time specified by TLOCK in Table 9 after an instanta-

neous phase shift of the incoming data.

80%

20%

50%

80%

20%

50%

+2.0 V

+0.8 V

+2.0 V

+0.8 V

150

Ω

150

Ω

0.01

µF

0.01

µF

100

Ω

0.01

µF

0.01

µF

Vcc - 1.3 V

Bit Time

Amplitude

24%

1.3

Normalized Time

1.0

0.0

0.2

0.3

0.5

0.7

0.8

Figure 17. High Speed Differential Inputs

Figure 14. Serial Input Rise and Fall Time

Figure 18. Receiver Input Eye Diagram Jitter Mask

Figure 15. TTL Input/Output Rise and Fall Time

Figure 16. Serial Output Load

Figure 19. Acquisition Time Eye Diagram

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