CP2201 datasheet(43/108 Pages) SILABS

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CP2200/1

Rev. 1.0

10. Power Modes

The CP2200/1 has four power modes that can be used to minimize overall system power consumption. The power

modes vary in device functionality and recovery methods. Each of the following power modes is explained in the

following sections:

Normal Mode (Device Fully Functional)

Link Detection Mode (Transmitter Disabled)

Memory Mode (Transmitter and Receiver Disabled)

Shutdown Mode (Oscillator Output Disabled)

The power modes above are achieved by disabling specific primary functions of the CP2200/1. Figure 15 shows

how power is distributed throughout the CP2200/1. To further reduce power consumption in any of the power

modes, secondary device functions may be turned off individually. The secondary device functions that may be

turned off are:

Link/Activity LED Drivers

Weak pull-ups to VDD

VDD Monitor

Figure 15. Power and Clock Distribution Control

VDD

System

Clock

(Oscillator)

Parallel Host

Interface

TX and RX

Buffers

MAC

Flash Memory

VDD Monitor

PHY

Transmitter

Receiver

VDMCN.7

OSCPWR.0

PHYCN.7

TXEN

(PHYCN.6)

RXEN

(PHYCN.5)

IOPWR

Activity LED

Link LED

Weak

Pullups

All Digital Pins

LINK (LA) Pin

ACT Pin

CP2201 Datasheet(PDF) 43 Page - Silicon Laboratories

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