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參數(shù)資料
| 型號： | 935261615118 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO28 |
| 封裝： | 7.50 MM, PLASTIC, SO-28 |
| 文件頁數(shù)： | 28/48頁 |
| 文件大?。?/td> | 356K |
| 代理商： | 935261615118 |
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1998 Oct 06
34
Philips Semiconductors
Preliminary specication
Universal Serial Bus (USB)
Digital-to-Analog Converter (DAC)
UDA1321
USB-DAC UDA1321/N101 (FIRMWARE SW 2.1.1.7)
The following items are different for the UDA1321/N101 compared to the general content of this data sheet:
Volume control
Treble control
Power management.
Table 10 Volume control characteristics
The treble control is available for the master channel of the UDA1321. Treble can be regulated in three modes: minimum,
flat and maximum mode. The preferred mode is selected via the 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 (discrete steps
0, 4 and 6 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 UDA1321; 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 DAC.
wVOLUME
VOLUME USB SIDE
(dB)
VOLUME USB DAC
(dB)
B15
B14
B13
B12
B11
B10
B9
B8
00000000
0
11111111
0
11111110
1
11111101
2
11111100
3
11111011
4
11111010
5
11111001
6
11111000
7
11110111
8
11110110
9
...
11000101
58
11000100
59
11000011
60
11000010
61
∞
11000001
62
∞
...
10000000
∞
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