User Interfaces - Semtech SX8724SEVK User Manual

ADVANCED COMMUNICATIONS & SENSING
7

User Interfaces

The analog interface gives access to the ZoomingADC inputs. The digital interface gives access to the GPIO
pins, the PC gateway connections and the power supplies. The analog and digital connections are available
on single row 2.54mm connectors and on the bare PCB next to the prototyping area.
The connections points are available for industrial PCB terminal blocks and on the bare PCB next to the
SX8724S
Connect SX8724S
VBATT pin to supply
(or measure current)
Analog interface
ACS - Revision 1.0
© Semtech Corp.
INTERFACES Acquis ition
Analog
U1
J1 16
AC2
1 AC2
1
AC3
2 AC3
2
AC6
3 AC6
3
AC7
4 AC7
4
AC4
5 AC4
5
AC5
6 AC5
J2 12
D0
4 D0
9
MISO/READY
3 D1
SS
2
D1 S X8724S
1
Digital
Figure 4. Analog Interface Schematic
Connect SPI interface to SX8724S
(pull-ups are on gateway side)
Figure 5. SX8724S Interface on the Board
May 2011
Evaluation Kit for SX8724S Data Acquisition System
VBATT
6
VBATT
14
SCLK
SCK L
10
SS
SS
13
MOSI
MOSI
11
MISO/READY
MISO/READY
8
READY
READY
15
VPUMP
VPUMP
7
VSS
17
VSS
4
Page 10
SX8724SEVK
USER GUIDE
C13
0.1uF
AGND
C14
22nF
AGND
Connect SX8724S READY
signal to gateway
Digital interface
+ Vref,in and Vref,out
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