参数资料
型号: ADAU1401AWBSTZ-RL
厂商: Analog Devices Inc
文件页数: 32/52页
文件大小: 0K
描述: IC AUDIO PROC 28/56BIT 48LQFP
标准包装: 2,000
系列: SigmaDSP®
类型: 音频处理器
应用: 监控器,电视
安装类型: 表面贴装
封装/外壳: 48-LQFP
供应商设备封装: 48-LQFP(7x7)
包装: 带卷 (TR)
ADAU1401A
Rev. A | Page 38 of 52
ADDRESS 2074 AND ADDRESS 2075 (0x081A AND
0x081B)—DATA CAPTURE REGISTERS
The ADAU1401A data capture feature allows the data at any
node in the signal processing flow to be sent to one of two
readable registers. This feature is useful for monitoring and
displaying information about internal signal levels or
compressor/limiter activity.
For each of the data capture registers, a capture count and a register
select must be set. The capture count is an integer between 0 and
1023 that corresponds to the program step number where the
capture is to occur. The register select field programs one of four
registers in the DSP core, which transfers this information to the
data capture register when the program counter reaches this step.
The captured data is in 5.19, twos complement data format,
which comes from the internal 5.23 data-word with the four
LSBs truncated.
The data that must be written to set up the data capture is a
concatenation of the 10-bit program count index with the 2-bit
register select field. The capture count and register select values
that correspond to the desired point to be monitored in the
signal processing flow can be found in a file output from the
program compiler. The capture registers can be accessed by
reading from Location 2074 and Location 2075. The format for
writing and reading to the data capture registers is shown in
Table 44. Data Capture Registers Bit Map
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Default
0
PC09
PC08
PC07
PC06
PC05
PC04
PC03
PC02
PC01
PC00
RS01
RS00
0x0000
Table 45. Data Capture Registers Bit Descriptions
Bit Name
Description
PC[9:0]
10-bit program counter address
RS[1:0]
Select the register to be transferred to the data capture output
Settings
Function
00
Select the Multiplier X input (MULT_X_INPUT) register
01
Select the Multiplier Y input (MULT_Y_INPUT) register
10
Select the multiplier-accumulator output (MAC_OUT) register
11
Select the accumulator feedback (ACCUM_FBACK) register
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