Datasheet

2003 Apr 10 24
NXP Semiconductors Preliminary specification
Stereo audio codec with SPDIF interface UDA1355H
7 Data path:
• Input SPDIF to output DAC
• Input ADC to outputs SPDIF or I
2
S.
Features:
• Crystal oscillator generates the clocks
for outputs SPDIF and I
2
S
• PLL locks onto the SPDIF input signal
• WS of I
2
S output is master
• Microcontroller mode:
– Decimator features can be used
– DAC sound features can be used
– SPDIF input channel status bits
(two times 40 bits) can be read
– SPDIF output channel status bits
(two times 40 bits) setting.
8 Data path:
• Input ADC to outputs SPDIF or I
2
S
• Input I
2
S to output DAC.
Features:
• Possibility to process input ADC, via
I
2
S-bus using an external DSP and
then to output DAC
• Crystal oscillator generates the clocks
for outputs SPDIF and I
2
S
• WSI is slave
• WSO master
• Microcontroller mode:
– Decimator features can be used
– DAC sound features can be used
– SPDIF output channel status bits
(two times 40 bits) setting.
MODE FEATURES SCHEMATIC
I
2
S mast
er
SPDIF IN
PLL
SPDIF LOCK
SPDIF OUT
MGU843
MUTE
I
2
S OUTPUT
XTAL
DAC
ADC
EXTERNAL DSP
(e.g. Sample Rate Convertor)
(SAA7715)
PLL
I
2
S LOCK
SPDIF OUT
MGU844
MUT
E
I
2
S OUTPUT
I
2
S master
XTAL
DAC
ADC
I
2
S slave
I
2
S INPUT