PAC1921 High-Side Current/Power Sensor Evaluation Board User’s Guide
DS50002376A-page 22
2015 Microchip Technology Inc.
3.3
OPERATING MODE
3.3.1
SMBus Mode
By default, the evaluation board is configured so that the PAC1921 operates in SMBus
mode with an SMBus address of,
1001_100xb
(98h). The address can be changed to
1001_101xb
(9Ah) by moving jumper J8 to position 2-3. Cycle power to the evaluation
board in order for the change to take effect.
3.4
LED INDICATORS
LED locations are indicated in
.
FIGURE 3-1:
LED Indicator Locations.
LEDs indicate the status of the signals, as described in
:
TABLE 3-1:
LED STATUS INDICATORS
LED
Signal
OFF
Green
Red
LD1
V
DD
Power
V
DD
is not present
N/A
V
DD
is present
LD2
+5V USB Power
USB power is not present
N/A
+5V USB power is
present
LD6
READ/INT
Pin is not asserted
(Read State)
Pin is asserted
(Integrate State)
N/A
LED 1
V
DD
Power
LED 2
USB Power
LED 6
READ/INT
