XE8000EV120 Semtech, XE8000EV120 Datasheet - Page 40

• Manufacturer Part Number: XE8000EV120
• Description: BOARD EVAL FOR SX8722I070TRLF
• Manufacturer: Semtech
• Series: ZoomingADC™r

Specifications of XE8000EV120

• Number Of Adc's: 1
• Number Of Bits: 16
• Data Interface: I²C
• Inputs Per Adc: 7 Single or 4 Differential
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 125°C
• Utilized Ic / Part: SX8722
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: XM8000EV120; XM8000EV120

11.2. Measurement engine
11.2.1. Overview
The measurement engine is the interface between the configuration register sets and the ZoomingADC™.
11.2.2. Functional flowchart
The flowchart above shows the measurement engine function. It performs successively the measurements for each enabled
configuration.
If in one or more configurations the bit CONT is set to 1, the measurements are performed again until the CONT bit is set to
0 through the I2C interface.
The engine goes out from the Idle mode every time an event occurs on the I2C interface.
ACS - Revision 4.2
©2008 Semtech Corp.
ADVANCED COMMUNICATIONS & SENSING
RESET / Power on reset
EEPROM Load
Read Enabled
Configurations
Initialization,
[SXCtrlEn]
CONT bit ?
Idle mode
Conf 2 ?
Conf 1 ?
Conf 3 ?
Conf 4 ?
October 2008
Figure 23. Measurement engine flowchart
YES
YES
YES
YES
YES
Measure conf 1
Measure conf 2
Measure conf 3
Measure conf 4
Page 40
Store intermediate
High gain acquisition for sensor interface
values
Update [SXUpdated n]
START conversion
using configuration
Compute average
Clear SINGLE bit
conversion to finish
Measure conf n
Set READY bit
Measure conf n
configuration n
OUT registers
ZoomingADC
Store result in
n parameters
(Idle mode)
NAverage ?
Mcounter + 1
Configure
Mcounter
START
Wait for
END
=
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SX8722