參數(shù)資料
型號(hào)： ADAU1445YSVZ-3A
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 74/92頁(yè)
文件大?。?/td> 0K
描述： IC SIGMADSP 175MHZ 100TQFP
標(biāo)準(zhǔn)包裝： 1
系列： SigmaDSP®
類型： 音頻處理器
應(yīng)用： 車載音頻
安裝類型： 表面貼裝
封裝/外殼： 100-TQFP 裸露焊盤
供應(yīng)商設(shè)備封裝： 100-TQFP-EP（14x14）
包裝： 托盤
ADAU1445/ADAU1446
Rev. A | Page 76 of 92
SERIAL OUTPUT FLEXIBLE TDM INTERFACE
MODES AND SETTINGS
The flexible TDM mode used on the SDATA_IN[1:0] serial
input ports can also be used on the SDATA_OUT[1:0] serial
output ports. There are 24 output channels available to the
output ports in flexible TDM mode.
For this mode to be active, the word length bits of the corre-
sponding serial ports must be set to 11 (TDM8 or flexible TDM).
In flexible TDM mode, each flexible TDM stream includes
32 bytes (slots) of information for every frame on the frame
clock. Combining the two serial output ports allows for a total
of 64 bytes in the flexible stream.
It is important to note that, unlike in the FARM, where signals
must be routed as stereo pairs, the output channels can be
individually assigned to different places on the flexible TDM
stream. Each of the 64 TDM output slots is capable of taking its
data from any of these 24 output channels, as long as data
retrieval starts with Output Channel 0 and increases
sequentially.
Because the audio data can be input in 8-, 16-, or 24-bit
formats, a single channel of audio data may occupy more than
one slot. An 8-bit audio channel occupies one slot, a 16-bit
audio channel occupies two slots, and a 24-bit audio channel
occupies three slots. To set up each slot, the supplying channel
(Input Channels[23:0]) and byte position (most significant,
middle, or least significant) must be set in the corresponding
TDM slot register. An example of the flexible TDM interface
mode on the output side is shown in Figure 58.
In this example, three monochannels of audio are sent from the
output channels to a flexible TDM stream. Output Channel 0 is
8 bits, Output Channel 1 is 16 bits, and Output Channel 2 is
24 bit. The target slots are set up accordingly. Slot 3 is set to
output the most significant (MS) byte of Output Channel 0, or
the eight MSBs. Slot 11 is set to output the most significant
(MS) byte of Output Channel 1, and Slot 12 is set to output the
middle (M) byte; therefore, together Slot 11 and Slot 12 output
the 16 MSBs of data from Output Channel 1. Slot 42, Slot 43,
and Slot 44 are set to output the most significant (MS), middle
(M), and least significant (LS) bytes, respectively, of Output
Channel 2, thus accounting for all 24 bits. The flexibility of the
system allows for any order or combination of slots to be used
for any channel, but most applications follow a sequential MS,
M, LS format. Note that any output channel can be assigned to
any slot, as long as assignment begins with Output Channel 0
and increases sequentially. This is done to ensure compatibility
with the automatic output channel assignment (see the
Two slots are contained within each register. The upper eight
bits control the higher slot, and the lower eight bits control the
lower slot. For example, in Register 0xE1C0 (SDATA_OUT0)
TDM Slot 0 and TDM Slot 1, Bits[15:8] control TDM Slot 1,
and Bits[7:0] control TDM Slot 0.
A special condition applies to Slot 31 and Slot 63. These two
slots can only be used to hold the MS byte of an 8-bit channel
and cannot be used in conjunction with other slots to hold
more than eight bits of data.
The default setting of all 16 bits high (0xFFFF) indicates that the
channel is configured in the standard serial input interface mode
and does not use the flexible TDM interface mode.
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
0123456789
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
31
0
32
63
...
FRAME
SDATA_OUT0
LRCLKx
SDATA_OUT1
07
69
6-
0
58
Figure 57. Flexible TDM Interface Mode—Output Streams
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ADAU1445YSVZ-3A-RL 功能描述:IC SIGMADSP 175MHZ 100TQFP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:SigmaDSP® 其它有關(guān)文件:STA321 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應(yīng)用:數(shù)字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應(yīng)商設(shè)備封裝:64-LQFP EP（10x10） 包裝:Digi-Reel® 其它名稱:497-11050-6
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ADAU1446YSTZ-3A 功能描述:IC SIGMADSP 175MHZ 100LQFP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:SigmaDSP® 其它有關(guān)文件:STA321 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應(yīng)用:數(shù)字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應(yīng)商設(shè)備封裝:64-LQFP EP（10x10） 包裝:Digi-Reel® 其它名稱:497-11050-6
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