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參數(shù)資料
| 型號(hào)： | UDA1331H |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類(lèi)： | 消費(fèi)家電 |
| 英文描述： | Universal Serial Bus USB Audio Playback Peripheral APP |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | 14 X 20 MM, 2.80 MM HEIGHT, PLASTIC, SOT-319-2, QFP-64 |
| 文件頁(yè)數(shù)： | 13/40頁(yè) |
| 文件大?。?/td> | 181K |
| 代理商： | UDA1331H |
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1998 Oct 06
13
Philips Semiconductors
Preliminary specification
Universal Serial Bus (USB) Audio
Playback Peripheral (APP)
UDA1331H
T
REBLE CONTROL
The treble control is available for the master channel of the UDA1331H. Treble can be regulated in three modes:
minimum, flat and maximum mode. The preferred mode is selected at start-up of the device (configuration map).
The corner frequency is 3000 Hz for the minimum mode and 1500 Hz for the maximum mode. The treble range is from
0 to 6 dB in steps of 2 dB. It should be noted that the negative treble values as defined in the “USB Device Class
Definition for Audio Devices”are not supported by the UDA1331H; the 0 dB value is returned as 0 dB. Table 4 gives the
mapping of the
bTreble
value upon the actual treble setting of the USB APP.
Table 4
Treble control characteristics
bTREBLE
TREBLE USB
SIDE (dB)
TREBLE USB APP (dB)
B7
B6
B5
B4
B3
B2
B1
B0
minimum
flat
maximum
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0.00
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.75
3.00
3.25
...
5.25
...
7.25
...
9.25
...
31.75
0
0
0
2
0
2
4
0
4
0
0
0
1
0
1
0
1
6
0
6
0
0
0
1
1
1
0
1
6
0
6
0
0
1
0
0
1
0
1
6
0
6
0
1
1
1
1
1
1
1
6
0
6
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