PNX1311EH/G,557 NXP Semiconductors, PNX1311EH/G,557 Datasheet - Page 147
PNX1311EH/G,557
Manufacturer Part Number
PNX1311EH/G,557
Description
IC MEDIA PROC 166MHZ 292-HBGA
Manufacturer
NXP Semiconductors
Datasheet
1.PNX1300EHG557.pdf
(549 pages)
Specifications of PNX1311EH/G,557
Applications
Multimedia
Core Processor
TriMedia
Controller Series
Nexperia
Ram Size
48K x 8
Interface
I²C, 2-Wire Serial
Number Of I /o
169
Voltage - Supply
2.375 V ~ 2.625 V
Operating Temperature
0°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
292-HBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Program Memory Type
-
Other names
568-1295
935277721557
PNX1311EH/G
935277721557
PNX1311EH/G
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Philips Semiconductors
programmed to emit frequencies from approx. 1 Hz to 80
MHz with a sub Hertz resolution.
The output of the DDS is always sent to the AO_OSCLK
output pin. This output is intended to be used as the
256f
converters, such as the Philips SAA7322, or codecs
such as the AD1847, CS4218, or UAD1340.
The PNX1300 DDS frequency is set by writing to the
FREQUENCY MMIO register. The programmer is free to
change the FREQUENCY setting dynamically, in order
to adjust the outgoing audio sample rate. In ATSC trans-
port stream decoding, this is the method by which the
system software locks audio output sample rate to the
original program provider sample rate.
Depending on bit 31 (MSB), the DDS runs in one of the
two following modes:
• bit 31 = 1 (standard improved mode)
• bit 31 = 0 (TM-1000 compatibility mode)
9.4.1
This mode was first available in the TM-1100. In this
mode, a high quality, low-jitter AO_OSCLK is generated.
The setting of the FREQUENCY register to accomplish a
given AO_OSCLK frequency is given by the formula:
This mode, and the above formula, should be used for all
s
or 384f
PNX1300 Standard Improved Mode
s
system clock source for oversampling D/A
Table 9-2. Clock system setting (f
In the improved mode the DDS synthesizer maximum jit-
ter can be computed as follows:
Example of jitter values can be found in
Table 9-3. Jitter values for common DSPCPU MHz
PRELIMINARY SPECIFICATION
44.1 kHz
48.0 kHz
44.1 kHz
48.0 kHz
f
DSPCPU
(MHz)
FREQUENCY
jitter
f
143
166
s
=
OSCLK
256fs
256fs
384fs
384fs
---------------------------- -
9 f
(nSec)
0.777
0.669
jitter
D SPCPU
1
=
SCK
64fs
64fs
64fs
64fs
2
31
+
f
f
----------------------------- -
DSPCPU
9 f
(MHz)
OSCLK
FREQUENCY
180
200
2187991971
2191574340
2208246133
2213619686
DSPCPU
DSPCPU
2
Table
32
=133 MHz)
Audio Out
(nSec)
0.617
0.555
jitter
9-3.
SCKDIV
3
3
5
5
9-3
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