EVB-UCS1002 Evaluation Board User Manual
Revision 1.1 (09-30-11)
32
SMSC EVB-UCS1002
PRELIMINARY - SMSC CONFIDENTIAL
Chapter 9 Custom Charging Tab
The Custom Charging Tab, shown in
, provides the means for users to create custom
charger emulator configurations. Custom charger configurations include signaling on the USB data
lines, as well as what method of current limiting to employ (constant current or trip). For more
information, please refer to the UCS1002 Datasheet and Custom Emulation application note.
9.1
Custom Emulation Configuration
Creating a custom emulation profile is a two part process of entering the appropriate stimulus-response
pairs in the fields provided as well as the desired current limiting behavior (after emulation is applied,
and the portable device starts to draw current).
9.1.1
Example
will apply the Legacy 1 stimulus pair. This includes a voltage divider
on DP and on DM with the values shown under STEP 5.
If the portable device draws bus current greater than the charging threshold being used, it will always
operate in “trip” mode current limiting (with trip point based on the current limit setting).
To modify
Figure 9.1 Custom Charging Tab
