CP2201 datasheet(10/108 Pages) SILABS

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CP2200/1

Rev. 1.0

5. Pinout and Package Definitions

Table 4. CP2200/1 Pin Definitions

Name

Pin Numbers

Type

Description

48-pin

28-pin

AV+

Power In 3.1–3.6 V Analog Power Supply Voltage Input.

AGND

Analog Ground

VDD1

Power In 3.1–3.6 V Digital Power Supply Voltage Input.

DGND1

Digital Ground

VDD2

Power In 3.1–3.6 V Digital Power Supply Voltage Input.

DGND2

Digital Ground

RST

D I/O

Device Reset. Open-drain output of internal POR and VDD monitor.

An external source can initiate a system reset by driving this pin low

for at least 15 µs.

LINK

—

D Out

Link LED. Push-pull output driven high when valid 10BASE-T link

pulses are detected (Link Good) and driven low when valid

10BASE-T link pulses are not detected (Link Fail).

ACT

—

D Out

Activity LED. Push-pull output driven high for 50 ms when any

packet is transmitted or received and driven low all other times.

—

D Out

Link or Activity LED. Push-pull output driven high when valid link

pulses are detected (Link Good) and driven low otherwise (Link

Fail). The output is toggled for each packet transmitted or received,

then returns to its original state after 50 ms.

XTAL1

A In

Crystal Input. This pin is the return for the external oscillator driver.

This pin can be overdriven by an external CMOS clock.

XTAL2

45*

27*

A Out

Crystal Output. This pin is the excitation driver for a quartz crystal.

TX+

A Out

10BASE-T Transmit, Differential Output (Positive).

TX–

A Out

10BASE-T Transmit, Differential Output (Negative).

RX+

A In

10BASE-T Receive, Differential Input (Positive).

RX–

A In

10BASE-T Receive, Differential Input (Negative).

MOTEN

D In

Motorola Bus Format Enable. This pin should be tied directly to VDD

for Motorola bus format or directly to GND for Intel bus format.

MUXEN

—

D In

Multiplexed Bus Enable. This pin should be tied directly to VDD for

multiplexed bus mode or directly to GND for non-multiplexed bus

mode.

INT

D Out

Interrupt Service Request. This pin provides notification to the host.

*Note: Pins can be left unconnected when not used.

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