PNX8510HW/B1,557 NXP Semiconductors, PNX8510HW/B1,557 Datasheet - Page 32

• Manufacturer Part Number: PNX8510HW/B1,557
• Manufacturer: NXP Semiconductors

Specifications of PNX8510HW/B1,557

• Lead Free Status / RoHS Status: Compliant

Philips Semiconductors
9397 750 12612
Product data
7.3.1 Audio interface operation
secondary audio channel usually carries the audio belonging to the record
(secondary) video channel. Because they might originate from different sources, the
two interfaces are operated by independent clocks.
Mute on/off is programmable by a register setting.
audio performance.
Table 19:
The audio path has three general blocks: input, interpolation, and DAC.
The audio interfaces can be operated in either slave or master mode:
Parameter
Dynamic range
S/(N+Disto.)
•
•
•
•
•
Fig 23. Audio path block diagram
The input is, by default, a 24-bit I
accept other formats.
The interpolator scales, filters and oversamples the incoming data by 64 x its
sampling frequency. The result goes to a Noise Shaper, which shifts in-band noise
to frequencies well above the audio spectrum. This provides a very high
signal-to-noise ratio.
Finite Impulse Response DACs convert the 1-bit data stream to analog output
voltage.
In slave mode, all required clocks (System CLK, SCK and WS) must be generated
externally and must be synchronous with each other.
In master mode, the PNX8510/11 only gets the System CLK and generates SCK
and WS clocks synchronously to the applied System CLK. In this mode, System
CLK is equal to 128 x Fs where Fs is the audio sampling frequency.
Audio performance
Rev. 04 – 12 January 2004
SECONDARY
PRIMARY
I
I
2
2
S-BUS
S-BUS
INTERPOLATOR
INTERPOLATOR
LEFT/RIGHT
LEFT/RIGHT
2
S interface. However, it can be programmed to
QFP100
85dB
>85dB
SHAPER
SHAPER
NOISE
NOISE
Table 19
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
FIR-DAC-R
FIR-DAC-R
FIR-DAC-L
FIR-DAC-L
PNX8510/11
Analog companion chip
describes the expected
MDB651
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