UCS1002-2 datasheet(35/114 Pages) MICROCHIP

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Programmable USB Port Power Controller with Charger Emulation

Datasheet

SMSC UCS1002

Revision 1.4 (07-16-13)

DATASHEET

Figure 5.2 shows a system configuration in which the UCS1002 provides a USB data switch, port

power switch, low power Attach Detection, and portable device Attach / Removal Detection signaling.

This configuration does not include configurable data line charger emulation, programmable current

limiting, or current monitoring and rationing.

Figure 5.3 shows a system configuration in which the UCS1002 provides a port power switch, low

power Attach Detection, and portable device attachment detected signaling. This configuration is useful

for applications that already provide USB BC1.2 and/or legacy data line handshaking on the USB data

lines, but still require port power switching and current limiting.

Figure 5.2 UCS1002 System Configuration (Charger Emulation, No SMBus, with USB Host)

UCS1002

LATCH

ALERT#

PWR_EN

3 V – 5.5 V

GND

Device

DPIN

DMIN

DPOUT

DMOUT

VDD

5 V

VBUS1

VBUS2

VS1

VS2

COMM_SEL / ILIM

3 V – 5.5 V

Auto-recovery

Upon Fault

Latch

Upon Fault

EM_EN

SEL

A_DET#

5 V Host

CBUS

USB Host

Disable

Detect State

Enable

Detect State

CIN

VDD

> 47k

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