UDA1355H/N2,518 NXP Semiconductors, UDA1355H/N2,518 Datasheet - Page 51

• Manufacturer Part Number: UDA1355H/N2,518
• Description: IC CODEC STER/SUDIO SPDIF 44QFP
• Manufacturer: NXP Semiconductors
• Type: Stereo Audior

Specifications of UDA1355H/N2,518

• Data Interface: I²C, Serial
• Resolution (bits): 24 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: No
• S/n Ratio, Adcs / Dacs (db) Typ: 97 / 98
• Voltage - Supply, Analog: 2.7 V ~ 5.5 V
• Voltage - Supply, Digital: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 44-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935271552518

NXP Semiconductors
Table 53 Mixer signal control signals
Note
1. X = don’t care
2003 Apr 10
5 and 4 SD_VALUE[1:0]
1 and 0 OS_IN[1:0]
Stereo audio codec with SPDIF interface
BIT
7
6
3
2
MIX
0
1
1
SILENCE
SDET_ON
BASS_SEL
BYPASS
SYMBOL
MIX_POS
X
0
1
(1)
Silence detector overrule. Value to force the DAC output to silence. This will give a
plop at the output of the DAC because of mismatch in offsets and the DC offset
added to the signal in the interpolator itself. If this bit is logic 0 then there is no
overruling and the FSDAC silence switch setting depends on the silence detector
circuit and on the status of bit MTM; if this bit is logic 1 then there is overruling and
the FSDAC silence switch is activated independent of the status of the digital silence
detector circuit or the status of bit MTM.
Silence detector enable. If this bit is logic 0 then the silence detection circuit is
disabled; if this bit is logic 1 then the silence detection circuit is enabled.
Silence detector setting. Value to program the silence detector. The number of zero
samples counted before the silence detector signals whether there has been digital
silence:
Bass boost select. If this bit is logic 0 then the normal bass boost function is
selected; if this bit is logic 1 then the resonant bass boost function is selected.
Mixer bypass mode. If this bit is logic 0 then the mixer is in mixer mode; if this bit is
logic 1 then the mixer is in mixer bypass mode.
Oversampling ratio select. Value to select the oversampling input mode. This mode
is only for I
this is the default setting: no mixing, volume of channel 1 is forced to 0 dB and
volume of channel 2 is forced to −∞ dB
mixing is done before the sound processing; input signals are automatically scaled
by 6 dB in order to prevent clipping during adding; after the addition, the 6 dB scaling
is compensated
mixing is done after the sound processing; input signals are automatically scaled in
order to prevent clipping during adding
00 = 3200 samples
01 = 4800 samples
10 = 9600 samples
11 = 19200 samples
00 = single speed input; normal input; mixing possible
01 = double speed input; after first half-band filter; no mixing possible but volume
and mute still possible
10 = quad speed input; in front of noise shaper; no mixing possible; no volume
control possible
11 = reserved.
2
S-bus input:
51
DESCRIPTION
FUNCTION
Preliminary specification
UDA1355H