数据搜索系统，热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

预览 PDF HTML

CS5535 数据表(PDF) 87 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件名 CS5535
功能描述  Geode??CS5535 I/O Companion Multi-Function South Bridge
PDF  555 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

CS5535 数据表(HTML) 87 Page - National Semiconductor (TI)

Back Button CS5535 Datasheet HTML 83Page - National Semiconductor (TI) CS5535 Datasheet HTML 84Page - National Semiconductor (TI) CS5535 Datasheet HTML 85Page - National Semiconductor (TI) CS5535 Datasheet HTML 86Page - National Semiconductor (TI) CS5535 Datasheet HTML 87Page - National Semiconductor (TI) CS5535 Datasheet HTML 88Page - National Semiconductor (TI) CS5535 Datasheet HTML 89Page - National Semiconductor (TI) CS5535 Datasheet HTML 90Page - National Semiconductor (TI) CS5535 Datasheet HTML 91Page - National Semiconductor (TI) Next Button
Zoom Inzoom in Zoom Outzoom out
 87 / 555 page
background image
ACC Functional Description (Continued)
www.national.com
87
Revision 0.8
transferred for a given PRD is 65534 bytes for mono
streams and 65532 bytes for stereo streams.
For stereo streams (bus masters 0, 1, and 6):
Memory Region Base Address and Size should be a
multiple of four (DWORD aligned). This ensures an
equal number of left and right samples.
For mono streams (bus masters 2, 3, 4, 5, and 7):
Memory Region Base Address and Size should be a
multiple of two (WORD aligned).
Descriptions of the control flags are:
• End of Transfer (EOT) - If set in a PRD, this bit indi-
cates the last entry in the PRD table. The last entry in a
PRD table must have either the EOT bit or the JMP bit
set. A PRD can not have both the JMP and EOT bits set.
When the bus master reaches an EOT, it stops and
clears its Bus Master Enable bit. If software desires an
IRQ to be generated with the EOT, it must set the EOP
bit and the EOT bit on the last PRD entry.
•End of Page (EOP) - If set in a PRD and the bus master
has completed the PRD’s transfer, the End of Page bit is
set (in the IRQ status register) and an IRQ is generated.
If a second EOP is reached due to the completion of
another PRD before the End of Page bit is cleared, the
Bus Master Error bit is set (in the IRQ status register)
and the bus master pauses. In this paused condition,
reading the IRQ status register clears both the Bus
Master Error and the End of Page bits, and the bus
master continues.
•Jump (JMP) - This PRD is special. If set, the Memory
Region Base Address is now the target address of the
JMP. The target address of the JMP must point to
another PRD. There is no audio data transfer with this
PRD. This PRD allows the creation of a looping mecha-
nism. If a PRD table is created with the JMP bit set in the
last PRD, the PRD table does not need a PRD with the
EOT bit set. A PRD can not have both the JMP and EOT
bits set.
4.3.7.3
PCM Data Format and Byte Order
Table 4-7 shows an example of the how PCM audio data is
stored in memory (byte order and channel order). Each row
represents a byte in memory, with increasing addresses as
you go down. The byte order can be configured via the Bus
Master Command Register for Intel (little endian) or Motor-
ola (big endian) byte ordering. Changing the byte order
ONLY affects how PCM data is interpreted. PRD entries
and register contents are always little endian. The two
channel format applies to the 32-bit bus masters handling
left and right input and output. The single channel format
applies to the 16-bit bus masters. The 32-bit bus masters
always operate on stereo data, and the 16-bit bus masters
always operate on mono data. Since there is no special
mode for playing monaural sound through the main chan-
nels (left and right), it is the responsibility of the software to
create stereo PCM data with identical samples for the left
and right channels to effectively output monaural sound.
Table 4-6. Physical Region Descriptor (PRD) Format
DWORD
Byte 3
Byte 2
Byte 1
Byte 0
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
0
Memory Region Base Address [31:0] (Address of Audio Data Buffer)
1E
O
T
E
O
P
J
M
P
Reserved
Size [15:0]
Table 4-7. PCM Data format (Byte and Channel Ordering)
2 Channel,
Little Endian
1 Channel,
Little Endian
2 Channel,
Big Endian
1 Channel,
Big Endian
Sample
Channel
Byte
Sample
Byte
Sample
Channel
Byte
Sample
Byte
0
Left
Low
0
Low
0
Left
High
0
High
0
Left
High
0
High
0
Left
Low
0
Low
0
Right
Low
1
Low
0
Right
High
1
High
0
Right
High
1
High
0
Right
Low
1
Low
1
Left
Low
2
Low
1
Left
High
2
High
1
Left
High
2
High
1
Left
Low
2
Low
1
Right
Low
3
Low
1
Right
High
3
High
1
Right
High
3
High
1
Right
Low
3
Low



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


数据表 下载

Go To PDF Page


链接网址



ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   数据表链接    |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com