UCS1002-1 datasheet(114/116 Pages) MICROCHIP

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Programmable USB Port Power Controller with Charger Emulation

Datasheet

Revision 1.4 (07-16-13)

114

SMSC UCS1002

DATASHEET

Table 9.2, "Current Limit

Mode Options"



Rearranged rows so DCE Cycle is grouped together.



Added row for DCE Cycle when a charger emulation profile is

being applied.



For Legacy charger emulation profiles 1 and 3-7 and the

Custom profile, the current limiting behavior used when the

profile is accepted is also used if the timeout is disabled when

the profile is applied during the DCE cycle.



Added text below table: As noted in the last three rows in

Table 9.2, under those specific conditions with ILIM < 1.5 A, it

is the relationship of ILIM and IBUS_R2MIN that determines the

current limiting mode. In these cases, the value of IBUS_R2MIN

is determined by CS_R2_IMIN[2:0] bits 4-2 in the Custom

Current Limiting Behavior Configuration register 51h.

Section 9.8.2, "Emulation

Cycling"

and

Section 9.11.5, "Legacy 7

Charger Emulation Profile"



Legacy 7 charger emulation profile defined and enabled by

default.

Section 10.4, "Configuration

Registers"

and

Table 10.10, "Attach /

Removal Detection

Threshold Options"



ATT_TH[1:0] default changed from 200 µA to 400 µA. 18h

Section 10.10.2, "Legacy

Emulation Enable - 21h"



Legacy 7 charger emulation profile enabled by default.

Section 10.14.2, "Custom

Current Limiting Behavior

Configuration - 51h"



Clarified description of CS_R2_IMIN[2:0].

Chapter 12, Typical

Operating Curves



Rearranged order of TOCs.



Added new TOCs:

— Figure 12.3, "Short Applied After Power Up"

— Figure 12.5, "Internal Power Switch Short Response"

— Figure 12.16, "Trip Current Limit Operation vs. Temp."

— Figure 12.17, "IBUS Measurement Accuracy"

— Figure 12.18, "Active State Current vs. Temp"

— Figure 12.19, "Detect State Current vs. Temp"

— Figure 12.20, "Sleep State Current vs. Temp"



Updated the following:

— Figure 12.6, "VBUS Discharge Behavior"

— Figure 12.11, "RDCP_RES Resistance vs.Temp"

— Figure 12.13, "VS Over-Voltage Threshold vs. Temp"

— Figure 12.14, "VS Under Voltage Threshold vs. Temp"

— Figure 12.15, "Detect State VBUS vs. IBUS"

Revision 1.1

(11-21-11)

Table 3.2, "Power

Dissipation Summary"



Missing units added.

Table 14.1 Customer Revision History (continued)

REVISION

LEVEL & DATE

SECTION/FIGURE/ENTRY

CORRECTION

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