sx8724s Semtech Corporation, sx8724s Datasheet - Page 37

• Manufacturer Part Number: sx8724s
• Description: Zoomingadc For Sensing Data Acquisition
• Manufacturer: Semtech Corporation

Revision 1.0
© Semtech
9.2.3 Multiple Bytes Write/Read Protocol
The SPI protocol is designed to be able to do multiple read/write during a transaction. During one single operation, as
long as Slave Select (SS) stay asserted, the register address is automatically increased to allow sequential read/write (or
sequential retrieval of data). The register address will be auto-incremented in multiple read/write commands. Between
each different operation though the communication should be restarted.
ADVANCED COMMUNICATIONS & SENSING
SCLK
SS
MOSI
MISO
SCLK
SS
MOSI
MISO
R/W
R/W
1
1
A6
A6
Read + Register Address
2
2
Write + Register Address
A5
A5
3
3
Figure 21. SPI waveform - Multiple bytes SPI Write protocol (2 bytes example)
A4
A4
Figure 22. SPI waveform - Multiple bytes SPI Read protocol (2 bytes example)
February 2011
4
4
A3
A3
5
5
A2
A2
6
6
A1
A1
7
7
A0
A0
8
8
D7
D7
9
9
D6
D6
10
10
Register Data[address]
Page 37
D5
D5
11
11
Register Data 1
D4
D4
12
12
D3
D3
13
13
ZoomingADC for sensing data acquisition
D2
D2
14
14
D1
D1
15
15
D0
D0
16
16
D7
D7
17
17
D6
D6
18
18
Register Data[address+1]
D5
D5
19
19
Register Data + 1
D4
D4
20
20
SX8724S
D3
D3
21
21
www.semtech.com
DATASHEET
D2
D2
22
22
D1
D1
23
23
D0
D0
24
24