cs5378 Cirrus Logic, Inc., cs5378 Datasheet - Page 6

• Manufacturer Part Number: cs5378
• Description: Low-power Single-channel Decimation Filter
• Manufacturer: Cirrus Logic, Inc.

1. GENERAL DESCRIPTION
The CS5378 is a single channel digital filter with
integrated system peripherals. Figure 1 illustrates a
simplified block diagram of the CS5378.
1.1 Digital Filter Features
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DS639F1
Single channel decimation filter for CS5371 ∆Σ
modulator.
Synchronous operation for simultaneous sam-
pling in multi-sensor systems.
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Output word rates, including low bandwidth
rates.
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Internal synchronization of digital filter
phase to an external SYNC signal.
Standard output rates: 4000, 2000, 1000,
500, 333, 250 SPS.
Low bandwidth rates: 200, 125, 100, 50,
Modulator Data Interface
Decimation and
Filtering Engine
Serial Interface
Figure 1. CS5378 Block Diagram
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Flexible digital filter configuration. (See Figure
2)
Digital gain correction to normalize sensor
gain.
Digital offset correction and calibration.
Reset, Synchronization
PLL, Clock Generation
Time Break Controller
General Purpose I/O
Test Bit Stream
40, 25, 20, 10, 5, 1 SPS.
Cascaded SINC, FIR, and IIR filters with
selectable output stage.
Linear and minimum phase FIR low-pass
filter coefficients included.
3 Hz Butterworth IIR high-pass filter coef-
ficients included.
FIR and IIR coefficients programmable to
create a custom filter response.
Offset correction to remove measurement
Controller
GPIO
CLK
MCLK
RESET
SYNC
MSYNC
TIMEB
TBSDATA
GPIO7:BOOT
GPIO6:PLL2
GPIO5:PLL1
GPIO4:PLL0
GPIO3
GPIO2
GPIO1
GPIO0
CS5378
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