that5171 THAT Corporation, that5171 Datasheet - Page 16

• Manufacturer Part Number: that5171
• Description: High-performance Digital Preamplifier Controller Ic
• Manufacturer: THAT Corporation

Document 600133 Rev 02
SPI Bus Topologies
single-device and multiple-device applications and
read-back of internal registers. Figures 12 through
14 show several common configurations. Note that
the 5171 always operates as the SLAVE device on an
SPI bus.
write operations to be communicated to individual
devices by addressing them individually. In order to
send commands to multiple devices in parallel, see
the configuration in Figure 14. This configuration
supports parallel write operations to multiple 5171s
with the same chip address when their chip selects
are asserted together. Note that in this configuration,
read operations can not be performed in parallel due
to contention on DOUT.
*SPI terminology:
SPI Port
The 5171 SPI port is very flexible, supporting
The configuration of Figure 13 allows read and
Microcontroller
Host
Figure 12. Single 5171 connected to a host
MOSI*
MISO*
SCLK
GPIO
microcontroller.
Tel: [phone]; Fax: [phone]; Web: www.thatcorp.com
THAT Corporation; 45 Sumner Street; Milford, MA 01757-1656; USA
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DI
DOUT
SCLK
CS
Page 16 of 20
Figure 14. Multiple 5171 ICs connected in parallel to a host
microcontroller, with independent chip selects.
Figure 13. Multiple 5171 ICs connected in parallel to a host
SPI Port
Microcontroller
SPI Port
Microcontroller
Host
Host
MOSI
MISO
SCLK
GPIO
GPIO
GPIO
MOSI
MISO
SCLK
GPIO
microcontroller.
Digital Preamplifier Controller IC
THAT5171 High-Performance
DI
DOUT
SCLK
CS
DI
DOUT
SCLK
CS
DI
DOUT
SCLK
CS
DI
DOUT
SCLK
CS
DI
DOUT
SCLK
CS
DI
DOUT
SCLK
CS
THAT5171
THAT5171
THAT5171
THAT5171
THAT5171
THAT5171
#1
#2
#3
SPI Port
SPI Port
SPI Port
#1
#2
#3
SPI Port
SPI Port
SPI Port