Microchip Technology PAC1921, User Manual

Page: 24 / 57

PAC1921 High-Side Current/Power Sensor Evaluation Board User’s Guide
DS50002376A-page 24

2015 Microchip Technology Inc.
Jumper settings are described in Table 3-2 .
3.6 TEST POINTS
The PAC1921 High-Side Current/Power Sensor Evaluation Board provides test points
for ground reference and signal access.
Table 3-3 summarizes these test points.
TABLE 3-2: JUMPER SETTINGS
Pin
Header
Label Default Position Alternate Position(s)
J1, J2 , Vsource- External power source terminals. (See Section 3.8.2 “Load Connection” .)
J3, J4 Demo Sys Select Demo mode R
SENSE+/-
.
Positions 3-2 are jumpered on both
jumpers. (See
Section 3.7 “Demo
Mode Setup and Operation” .)
Select Sys mode R
SENSE+/-
.
Positions 1-2 are jumpered on both
jumpers. (See
Section 3.8 “Sys Mode
Setup and Operation” .)
J5, J6,
J7 Reserved Reserved for future use
J8 J8 (ADDR_SEL)
(See
Section 3.3.1 “SMBus
Mode”
)
In SMBus mode, sets SMBus address to
1001_100b
at power-up.
Positions 1-2 are jumpered.
In SMBus mode, sets SMBus address to
1001_101b
at power-up.
Positions 2-3 are jumpered.
J11 GND Connect ground from external source for
Sys mode.
J13 GND, #READ/INT,
SMBus_DATA,
SMBus_CLK, VDD USB bridge generates on-board 3.3V
and provides SMBus host.
Positions 1-2, 3-4, 5-6, 7-8, 9-10 are all
jumpered. (See Section 3.2.1 “Direct SMBus
Connect Option” .)
TABLE 3-3: TEST POINTS
Test Point Marking Signal Function Monitored
1 (orange) SENSE+
2 Vsense- (yellow) SENSE-
3 OUT (white) OUT Pin
4 ADDR_SEL SMBus Address Select
5 Vdd (red) V
DD
6 GND (black) Ground
7 #READ/INT (yellow) READ/INT Pin