CS4362A Datasheet, PDF (35/47 Pages) Cirrus Logic – 114 dB, 192 kHz 6-channel D/A Converter

CS4362A
5.2.5 Soft Volume Ramp-Up after Error (RMP_UP)
Default = 0
0 - Disabled
1 - Enabled
Function:
An un-mute will be performed after a LRCK/MCLK ratio change or error, and after changing the Functional
Mode. When this feature is enabled, this un-mute is affected, similarly to attenuation changes, by the Soft
and Zero Cross bits in the Mode Control 3 register. When disabled, an immediate un-mute is performed in
these instances.
Notes: For best results, it is recommended that this feature be used in conjunction with the RMP_DN bit.
5.2.6 MUTEC Polarity (MUTEC+/-)
Default = 0
0 - Active High
1 - Active Low
Function:
The active polarity of the MUTEC pin(s) is determined by this register. When set to 0 (default) the MUTEC
pins are high when active. When set to 1 the MUTEC pin(s) are low when active.
Notes: When the on board mute circuitry is designed for active low, the MUTEC outputs will be high (un-muted)
for the period of time during reset and before this bit is enabled to 1.
5.2.7 Auto-Mute (AMUTE)
Default = 1
0 - Disabled
1 - Enabled
Function:
The Digital-to-Analog converter output will mute following the reception of 8192 consecutive audio samples
of static 0 or -1. A single sample of non-static data will release the mute. Detection and muting is done
independently for each channel. The quiescent voltage on the output will be retained and the Mute Control
pin will go active during the mute period. The muting function is affected, similar to volume control changes,
by the Soft and Zero Cross bits in the Mode Control 3 register.
5.2.8 Mute Pin Control (MUTEC1, MUTEC0)
Default = 00
00 - Six mute control signals
01, 10 - One mute control signal
11 - Three mute control signals
Function:
Selects how the internal mute control signals are routed to the MUTEC1 through MUTEC6 pins. When set
to ‘00’, there is one mute control signal for each channel: AOUT1A on MUTEC1, AOUT1B on MUTEC2,
etc. When set to ‘01’ or ‘10’, there is a single mute control signal on the MUTEC1 pin. When set to ‘11’,
there are three mute control signals, one for each stereo pair: AOUT1A and AOUT1B on MUTEC1,
AOUT2A and AOUT2B on MUTEC2, and AOUT3A and AOUT3B on MUTEC3.
DS617PP1
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