Datasheet

2003 Apr 10 25
NXP Semiconductors Preliminary specification
Stereo audio codec with SPDIF interface UDA1355H
9 Data path:
• Input SPDIF to output I
2
S
• Input I
2
S to outputs DAC or SPDIF.
Features:
• Possibility to process input SPDIF, via
I
2
S-bus using an external DSP and
then to outputs DAC or SPDIF
• BCK and WS being master for both I
2
S
input and output (different clocks)
• Input I
2
S to outputs DAC and SPDIF;
BCK and WS being master; clocks
based on crystal oscillator
• Microcontroller mode:
– DAC sound features can be used
– SPDIF output channel status bits
(two times 40) setting.
10 Data path:
• Input SPDIF to output DAC or I
2
S
• Input I
2
S-bus to output SPDIF.
Features:
• Possibility to process input SPDIF, via
I
2
S-bus using an external DSP and
then to output SPDIF
• Input SPDIF to outputs I
2
S and DAC;
locking onto the SPDIF input signal;
BCK and WS being master
• Input I
2
S to output SPDIF; BCK and
WS being master; clocks are
generated by the crystal oscillator
• Microcontroller mode:
– DAC sound features can be used
– SPDIF input channel status bits
(two times 40) can be read
– SPDIF output channel status bits
(two times 40) setting.
11 Not used
12 See microcontroller mode
13 See microcontroller mode
14 See microcontroller mode
15 Not used
MODE FEATURES SCHEMATIC
MGU845
SPDIF IN
MUT
E
I
2
S OUTPUT
I
2
S master
PLL
SPDIF LOCK
DAC
I
2
S slave
EXTERNAL DSP
(e.g. Sample Rate Convertor)
(SAA7715)
I
2
S INPUT
XTAL
SPDIF OUT
MGU846
SPDIF IN
MUT
E
I
2
S OUTPUT
I
2
S master
PLL
SPDIF LOCK
DAC
I
2
S slave
EXTERNAL DSP
(e.g. Sample Rate Convertor)
(SAA7715)
I
2
S INPUT
XTAL
SPDIF OUT