XE8000EV120 Semtech, XE8000EV120 Datasheet - Page 20

• 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

6. Access the SX8722
6.1. Description
The SX8722 is configured trough register sets and general control registers.
All the accesses to the SX8722 registers are done through the I2C interface using read and write commands.
The next paragraph describes two approaches to configure the SX8722
6.2. SX8722 configuration
As it will be shown in the next chapter there are two ways to write data in the SX8722 registers:
7. I2C Commands
This chapter describes the commands that are coded in the SX8722.
The SX8722 commands are summarized below, detailed timing diagrams can be found “Serial Communication” chapter.
ACS - Revision 4.2
©2008 Semtech Corp.
ADVANCED COMMUNICATIONS & SENSING
Direct write: This command writes 8 bits to a defined address. This implies knowledge of the value to be written to this
address.
Masked write: This command can write a single bit in a byte using a mask.
Type
Data access
Power modes
EEPROM
Command
write_direct
write_masked
read
sleep
shutdown
reset
save_eeprom
load_eeprom
October 2008
Description
Writes 8bit data to a given address
Writes bits to given address using a given mask
Reads 8bit data from a given address
Sets the SX8722 to sleep mode
Sets the SX8722 to sleep mode
Resets the SX8722
Saves the SX8722 registers in the external EEPROM (if present)
Loads the SX8722 registers in the external EEPROM (if present)
Table 4. SX8722 commands
Page 20
High gain acquisition for sensor interface
DATASHEET
www.semtech.com
SX8722
Byte
0x10
0x20
0x30
0x40
0x50
0x60
0x70
0x80