Microchip Technology UCS1003-1, Руководство пользователя

Страница: 16 / 53

UCS1003-1 Evaluation Board User’s Guide
DS50002510A-page 16

2016 Microchip Technology Inc.
TABLE 2-3: JUMPER DESCRIPTION ( Note 1 )
Designator Function
Jumper
Position
Description
J4 V
DD
source selection The jumper populated on this header selects the V
DD
supply
source for the digital circuits on the board.
1-2 V
DD
is connected to V
BUS
pin of the J2 USB connector
2-3 V
DD
is connected to V
S
. This is the recommended configuration
when evaluating the Attach Detection feature of the UCS1003-1.
If the board is evaluated with a PC running the GUI, then the V
S
must be supplied after the USB cable is plugged into the J2
connector.
J5 V
S
source selection The jumper populated on this header selects the voltage input
source for the power switch inside the UCS1003-1.
1-2 V
S
source is the J1 power connector (external 5V power supply).
2-3 V
S
is connected to V
BUS
of the J3 USB connector. Use this
configuration only if the USB host can deliver the necessary
current for charging.
J6 LATCH, S0
Logic Inputs settings
The jumpers must be left off for SMBus communication to be
enabled. If the UCS1003-1 is in Stand-Alone mode (as selected
by using J18 instead of J16), then the header pins have the
following functions:
1-2 Jumper placed S0 = Logic Low – Detect Power state disabled
No jumper S0 = Logic High – Detect Power state enabled
3-4 Jumper placed LATCH = Logic Low – “Auto-retry” fault handler
enabled
No jumper LATCH = Logic High – “Latch” fault handler enabled
J7 SMBus data and clock
lines
If the UCS1003-1 is in SMBus mode (as selected by using J16
instead of J18), then two jumpers must be populated in 1-2 and
3-4 positions to connect the clock and data lines to the MCP2221
USB bridge.
The jumpers must be left off if UCS1003-1 is in Stand-Alone
mode.
J8 V
BUS
output connection This jumper connects the 5V pin of connector J10 to the
UCS1003-1 V
BUS
power output pins. A current probe or a
multimeter can be connected to this header for measuring the
charging current and the voltage, close to the USB connector.
J9 PWR_EN, EM_EN, M1,
M2
Logic Inputs settings
When a jumper is installed, the corresponding UCS1003-1 input
pin will be in Logic Low state. Otherwise, the corresponding pin
will be in Logic High state.
1-2 PWR_EN
3-4 EM_EN
5-6 M1
7-8 M2
J16 Current Limit
SMBus mode
Placing one jumper on this header selects the current limit and
sets the UCS1003-1 in SMBus mode. In this case, no jumper
must be populated on J18 header.
Note 1:
The following headers must be populated with one jumper for the UCS1003-1 Evaluation Board to be
functional:
• J4, J5, J8
• J16 or J18
• J17 or J19
• If the UCS1003-1 is configured in SMBus mode (as selected by using J16 instead of J18, two
jumpers must be populated on J7; J6 must be left unpopulated. If the UCS1003-1 is configured in
Stand-Alone mode, the jumpers on J7 must be left off.)