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參數(shù)資料
| 型號： | STA323WTR |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 2.1 HIGH EFFICIENCY DIGITAL AUDIO SYSTEM |
| 中文描述： | 2.1高效率數(shù)字音頻系統(tǒng) |
| 文件頁數(shù)： | 19/41頁 |
| 文件大?。?/td> | 749K |
| 代理商： | STA323WTR |
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STA323W
7.6 CONFIGURATION REGISTER E (ADDRESS 04H)
7.6.1 Max Power Correction Variable
By enabling MPC and setting MPCV = 1, the max power correction becomes variable. By adjusting the
MPCC registers (address 0x27-0x28) it becomes possible to adjust the THD at maximum unclipped power
to a lower value for a particular application.
7.6.2 Max Power Correction
Setting the MPC bit corrects the DDX-2060/2100/2160 power device at high power. This mode will lower
the THD+N of a full DDX-2060 DDX
system at maximum power output and slightly below.
7.6.3 AM Mode Enable
The STA323W features a DDX
processing mode that minimizes the amount of noise generated in the
frequency range of AM radio. This mode is intended for use when DDX
is operating in a device with an
active AM tuner. The SNR of the DDX
processing is reduced to ~83dB in this mode, which is still greater
than the SNR of AM radio.
7.6.4 PWM Speed Mode
Table 14. PWM Output Speed Selections
D7
D6
D5
D4
D3
D2
D1
D0
SVE
ZCE
RES
PWMS
AME
RES
MPC
MPCV
0
0
0
0
0
0
0
0
BIT
R/W
RST
NAME
DESCRIPTION
0
R/W
0
MPCV
Max Power Correction Variable:
0 – Use Standard MPC Coefficient
1 – Use MPCC bits for MPC Coefficient
BIT
R/W
RST
NAME
DESCRIPTION
7
R/W
1
MPC
Max Power Correction:
0 – MPC Disabled
1 – MPC Enabled
BIT
R/W
RST
NAME
DESCRIPTION
3
R/W
0
AME
AM Mode Enable:
0 – Normal DDX
operation.
1 – AM reduction mode DDX
operation.
BIT
R/W
RST
NAME
DESCRIPTION
4
R/W
0
PWMS
PWM Speed Selection: Normal or Odd
PWMS (1...0)
PWM Output Speed
0
Normal Speed (384kHz) All Channels
1
Odd Speed (341.3kHz) All Channels
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