pnx1500 NXP Semiconductors, pnx1500 Datasheet - Page 536

• Manufacturer Part Number: pnx1500
• Description: Pnx15xx Series Connected Media Processor
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Volume 1 of 1
Table 5: Operating Modes and Memory Formats
Table 6: Endian Ordering of Audio Data in Main Memory
PNX15XX_SER_3
Product data sheet
NR_CHAN MODE
00
00
01
01
10
10
11
11
Operating
Modes
16-bit mono -
little endian
16-bit mono -
big endian
16-bit stereo
- little endian
Figure 6:
16 bit, stereo,
NR_CHAN=00
16 bit, stereo,
NR_CHAN=10
32 bit, mono,
NR_CHAN=00
32 bit, stereo,
NR_CHAN=10
32 bit, stereo,
NR_CHAN=00
Audio In Memory DMA Formats
mono (one channel)
stereo (one channel)
mono (two channels)
stereo (two channels)
mono (three channels)
stereo (three channels)
mono (four channels)
stereo (four channels)
m[adr]
left
left
left
n
n
n
[7:0]
[15:8]
[7:0]
SD0.left
SD0.left
SD0.left
3.5.1 Endian Control
3.5 Memory Data Formats
adr
adr
adr
SD0.left
n
n
SD0.left
n
m[adr+1]
left
left
left
adr
adr
The Audio In unit autonomously writes samples to memory in mono and stereo 16
and 32-bit per sample formats, as shown in
stored at increasing memory address locations.
The following table illustrates exactly how the Audio Inout block writes data in
memory (byte) locations precisely after the correct endian swapping done at the
adapter depending on the polarity of the big-endian bit in the Global Registers
Module.
n
n
n
SD0.right
SD0.right
SD0.right
[15:8]
[7:0]
[15:8]
adr+2
adr+2
n
n
adr+4
n
Source of Successive Samples
SD0.left
SD0.left, SD0.right
SD0.left, SD1.left
SD0.left, SD0.right, SD1.left, SD1.right
SD0.left, SD1.left, SD2.left
SD0.left, SD0.right, SD1.left, SD1.right, SD2.left, SD2.right
SD0.left, SD1.left, SD2.left, SD3.left
SD0.left, SD0.right, SD1.left, SD1.right, SD2.left, SD2.right, SD3.left, SD3.right.
n
n
m[adr+2]
left
left
]
right
n+1
n+1
SD0.left
SD1.left
SD1.left
n
adr+4
adr+4
[7:0]
[7:0]
[15:8
adr+8
SD0.left
SD0.right
Rev. 3 — 17 March 2006
n+1
adr+4
n
adr+4
n
m[adr+3]
left
]
left
right
SD0.right
n+1
n+1
SD1.right
n+1
SD1.right
n
adr+6
n
adr+6
[15:8] left
adr+12
[15:8
[7:0]
n+1
n
n
m[adr+4]
left
left
n+2
n+2
n+1
SD0.left
SD2.left
SD2.left
adr+8
adr+8
adr+16
[7:0]
[15:8]
[7:0]
SD0.left
SD0.left
n+2
adr+8
n
adr+8
n
Figure
m[adr+5]
left
left
left
SD0.right
n+2
n+1
SD2.right
SD2.right
adr+10
adr+10
n+2
n+2
n+1
adr+20
6. Successive samples are always
[15:8]
[7:0]
[15:8]
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
n+2
n
n
PNX15xx Series
SD0.left
m[adr+6]
left
left
right
SD0.left
Chapter 16: Audio Input
SD0.left
adr+12
adr+12
adr+24
n+3
n+3
SD0.left
n+1
SD0.right
[7:0]
[15:8]
adr+12
adr+12
n+1
n+3
[7:0]
n+1
SD0.right
SD0.right
n+2
SD0.right
n+1
adr+14
adr+14
adr+28
m[adr+7]
left
left
right
]
n+3
n+3
n+1
n+3
n+1
n+1
[15:8]
[7:0]
[15:8
16-10