���������������������������������������������������������������� Maxim Integrated Products 13

MAX14600–MAX14605

USB Host Charger Identification/Adapter Emulators

in USB Battery Charger Specification 1.2 when the

charging host supports the CDP mode. This is a useful

feature since most host USB transceivers do not have

the CDP function. Table 3 shows the different power

states of S0–S5.

Bus Voltage Discharge

The MAX14601/MAX14604 auto current-limit switch-

be discharged slowly depending upon the load. If fast

Data Contact Detect Support

The MAX14600–MAX14605 family support USB devices

that require detecting the USB data lines prior to charging.

When a USB Revision 1.2-compliant device is attached,

the USB data lines DP and DM are shorted together.

The short remains until it is detected by the USB device.

This feature guarantees appropriate charger detection

if a USB Revision 1.2-compliant device is attached. The

autodetection charger mode is activated after the data

contact detect is established. CB0 and CB1 must be set

low to activate data contact detect support.

Figure 5. MAX14601/MAX14604 Peripheral Reset Applications Diagram

Table 3. Different Power States

STATE

DESCRIPTION

S0

System on.

S1

Power to the CPU(s) and RAM is maintained;

devices that do not indicate they must remain on

can be powered down.

S2

CPU is powered off.

S3

Standby (suspend to RAM). System memory con-

text is maintained, and all other system context

is lost.

S4

Hibernate. Platform context is maintained.

S5

Soft off.

MAX14601

MAX14604

USB

TRANSCEIVER

CURRENT-LIMIT

SWITCH

PM/AM

SYSTEM CONTROL

CM/FM

CB1

CB0

+5V POWER

SUPPLY

TDM

TDP

TDM

TDP

0.1µF

150µF

GND

USB

CONNECTION

D+

DP

GND

D-

DM

EN

PS EN

CEN

1kΩ

33kΩ