cs4341a Cirrus Logic, Inc., cs4341a Datasheet - Page 7

• Manufacturer Part Number: cs4341a
• Description: 24-bit, 192 Khz Stereo Dac With Volume Control
• Manufacturer: Cirrus Logic, Inc.

3. APPLICATIONS
3.1
The CS4341A is pin and functionally compatible with all CS4341 designs, operating at the standard audio
sample rates, that use pin 3 as a serial clock input. In addition to the features of the CS4341, the CS4341A
supports standard sample rates up to 192 kHz, as well as automatic mode detection for sample rates be-
tween 4 and 200 kHz. The automatic speed mode detection feature allows sample rate changes between
single, double and quad-speed modes without external intervention.
The CS4341A does not support an internal serial clock mode, sample rates between 50 kHz and 84 kHz
(unless otherwise stated), or 2.7 V operation as does the CS4341.
3.2
The device operates in one of three operational modes. The allowed sample rate range in each mode will
depend on whether the Auto-Detect Defeat bit is enabled/disabled.
DS582F2
4 kHz - 50 kHz
84 kHz - 100 kHz
170 kHz - 200 kHz
Upgrading from the CS4341 to the CS4341A
Sample Rate Range/Operational Mode Detect
The Auto-Detect feature is enabled by default in the control port register 5.1. In this state, the
CS4341A will auto-detect the correct mode when the input sample rate (F
frequency, falls within one of the ranges illustrated in Table 1. Sample rates outside the specified
range for each mode are not supported.
The Auto-Detect feature can be defeated via the control port register 5.1. In this state, the CS4341A
will not auto-detect the correct mode based on the input sample rate (F
must be set appropriately if F
section 5.1.1 for implementation details. Sample rates outside the specified range for each mode
are not supported.
3.2.1
3.2.2
MC1
0
0
1
Auto-Detect Enabled
Auto-Detect Disabled
Input Sample Rate (F
MC0
0
1
0
4 kHz - 50 kHz
50 kHz - 100 kHz
100 kHz - 200 kHz
s
Table 1. CS4341A Auto-Detect
falls within one of the ranges illustrated in Table 2. Please refer to
Table 2. CS4341A Mode Select
S
)
Input Sample Rate (F
Single Speed Mode
Double Speed Mode
Quad Speed Mode
S
)
Single Speed Mode
Double Speed Mode
Quad Speed Mode
MODE
s
). The operational mode
s
MODE
), defined by the LRCK
CS4341A
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