Datasheet

MAX4950

Quad PCI Express Equalizer/Redriver

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Pin Description (continued)

PIN NAME FUNCTION

32 OUT1N Inverting Output 1

33 OUT1P Noninverting Output 1

35 OUT0N Inverting Output 0

36 OUT0P Noninverting Output 0

39 EN

Enable Input. Drive EN low for standby mode. Drive EN high for normal mode. EN is internally

pulled down by 60kΩ (typ) resistor.

40 RX_DET

Receiver Detection Control Bit. Drive RX_DET high to initiate receiver detection. Drive RX_DET low

for normal mode. RX_DET is internally pulled down by 60kΩ (typ) resistor.

41 O_AMP Output Redrive Selection Input. O_AMP is internally pulled down by 60kΩ (typ) resistor.

42 P_SAV Power-Save Mode Input. P_SAV is internally pulled down by 60kΩ (typ) resistor. See Table 6.

—EP

Exposed Pad. Internally connected to GND. Connect EP to a large ground plane to maximize

thermal performance. EP is not intended as an electrical connection point.

MAX4950

EQUALIZER

GLOBAL

POWER SAVE

ELECTRICAL IDLE

DETECTOR

RECEIVER DETECT

MANAGER

OUTPUT

ENABLE

RX_DET

P_SAV O_AMP

OEQ0

OEQ1

OUT_P

OUT_N

IN_P

INEQ1

INEQ0

IN_N

Functional Diagram