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WM8281ECS/R Scheda tecnica(PDF) 174 Page - Cirrus Logic

Il numero della parte WM8281ECS/R
Spiegazioni elettronici  Low Power Audio System with Ambient Noise Cancellation and Echo Cancellation
PDF  392 Pages
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Produttore elettronici  CIRRUS [Cirrus Logic]
Homepage  http://www.cirrus.com
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WM8281ECS/R Scheda tecnica(HTML) 174 Page - Cirrus Logic

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WM8281
174
Rev 4.0
SLIMBUS PORT NUMBER CONTROL
The WM8281 SLIMbus interface supports up to 8 input (RX) channels and up to 8 output (TX)
channels. The SLIMbus port numbers for these audio channels are configurable using the registers
described in Table 52.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R1490
(05D2h)
SLIMbus
RX Ports0
13:8
SLIMRX2_PORT
_ADDR [5:0]
1
SLIMbus RX Channel n Port number
Valid from 0..63
5:0
SLIMRX1_PORT
_ADDR [5:0]
0
R1491
(05D3h)
SLIMbus
RX Ports1
13:8
SLIMRX4_PORT
_ADDR [5:0]
3
5:0
SLIMRX3_PORT
_ADDR [5:0]
2
R1492
(05D4h)
SLIMbus
RX Ports2
13:8
SLIMRX6_PORT
_ADDR [5:0]
5
5:0
SLIMRX5_PORT
_ADDR [5:0]
4
R1493
(05D5h)
SLIMbus
RX Ports3
13:8
SLIMRX8_PORT
_ADDR [5:0]
7
5:0
SLIMRX7_PORT
_ADDR [5:0]
6
R1494
(05D6h)
SLIMbus
TX Ports0
13:8
SLIMTX2_PORT
_ADDR [5:0]
9
SLIMbus TX Channel n Port number
Valid from 0..63
5:0
SLIMTX1_PORT
_ADDR [5:0]
8
R1495
(05D7h)
SLIMbus
TX Ports1
13:8
SLIMTX4_PORT
_ADDR [5:0]
11
5:0
SLIMTX3_PORT
_ADDR [5:0]
10
R1496
(05D8h)
SLIMbus
TX Ports2
13:8
SLIMTX6_PORT
_ADDR [5:0]
13
5:0
SLIMTX5_PORT
_ADDR [5:0]
12
R1497
(05D9h)
SLIMbus
TX Ports3
13:8
SLIMTX8_PORT
_ADDR [5:0]
15
5:0
SLIMTX7_PORT
_ADDR [5:0]
14
Table 52 SLIMbus Port Number Control
SLIMBUS SAMPLE RATE CONTROL
The SLIMbus RX inputs may be selected as input to the digital mixers or signal processing functions
within the WM8281 digital core. The SLIMbus TX outputs are derived from the respective output
mixers.
The sample rate for each SLIMbus channel is configured using the SLIMRXn_RATE and
SLIMTXn_RATE registers - see Table 23
within the “Digital Core” section.
Note that the SLIMbus interface provides simultaneous support for SYSCLK-referenced and
ASYNCCLK-referenced sample rates on different channels. For example, 48kHz and 44.1kHz
SLIMbus audio paths can be simultaneously supported.
Sample rate conversion is required when routing the SLIMbus paths to any signal chain that is
asynchronous and/or configured for a different sample rate.



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