
Philips Semiconductors
PNX15xx Series
Volume 1 of 1
Chapter 15: Audio Output
PNX15XX_SER_3
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 3 — 17 March 2006
15-19
Offset 0x11 001C
AO_SIZE—DMA Clock Domain
31:6
SIZE
R/W
0
DMA buffer size in samples. The number of mono samples or stereo
sample pairs is read from a DMA buffer in memory before switching
to the other DMA buffer in memory. Buffer size in bytes is as follows:
16 bps, mono: 2 * SIZE
32 bps, mono: 4 * SIZE
16 bps, stereo: 4 * SIZE
32 bps, stereo: 8 * SIZE
5:0
Unused
-
To ensure software backward compatibility unused or reserved bits must
be written as zeros and ignored upon read
.
Offset 0x11 0020
AO_CC—DMA Clock Domain
31:16
CC1
R/W
0x0
The 16-bit value of CC1 is shifted into each emitted serial frame
starting at bit position CC1_POS, as long as CC1_EN is asserted.
15:0
CC2
R/W
0x0
The 16-bit value of CC2 is shifted into each emitted serial frame
starting at bit position CC2_POS, as long as CC2_EN is asserted.
Offset 0x11 0024
AO_CFC—DMA Clock Domain
31:18
Unused
-
To ensure software backward compatibility unused or reserved bits must
be written as zeros and ignored upon read
.
17:10
CC1_POS
R/W
0x0
Denes the bit position within a serial frame where the rst data bit
of CC1 is placed.
9:0
CC2_POS
R/W
0x0
Denes the bit position within a serial frame where the rst data bit
of CC2 is placed.
Offset 0x11 0028—0FF0 Reserved—DTL Clock Domain
31:0
Reserved
-
A read returns 0xDEADABBA.
Offset 0x11 0FF4
AO_PWR_DWN—DTL Clock Domain
31:1
Unused
-
To ensure software backward compatibility unused or reserved bits must
be written as zeros and ignored upon read
.
0
PWR_DWN
R/W
0
The bit is used to provide power control status for system software
block power management.
Offset 0x11 0FFC
AO_MODULE_ID—DTL Clock Domain
31:16
ID
R
0x0120
Module ID. This eld identies the block as type Audio Out.
15:12
MAJ_REV
R
0
Major Revision ID. This eld is incremented by 1 when changes
introduced in the block result in software incompatibility with the
previous version of the block. First version default = 0.
11:8
MIN_REV
R
0x2
Minor Revision ID. This eld is incremented by 1 when changes
introduced in the block result in software
compatibility with the
previous version of the block. First version default = 0.
7:0
APERTURE
R
0
Aperture size. Identies the MMIO aperture size in units of 4 KB for
the AO block. AO has an MMIO aperture size of 4 KB.
Aperture = 0: 4 KB.
Table 9: Audio Output Port Registers …Continued
Bit
Symbol
Acces
s
Value
Description