uda1321 NXP Semiconductors, uda1321 Datasheet - Page 15

• Manufacturer Part Number: uda1321
• Description: Universal Serial Bus Usb Digital-to-analog Converter Dac
• Manufacturer: NXP Semiconductors

Philips Semiconductors
T
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 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 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.
Table 4 Treble control characteristics; note 1
Note
1. The 2 dB step is not supported in the UDA1321/N101; see Chapter “USB-DAC UDA1321/N101
1998 Oct 06
REBLE CONTROL
Universal Serial Bus (USB)
Digital-to-Analog Converter (DAC)
B7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
(Firmware sw 2.1.1.7)”.
B6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
B5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
B4
bTREBLE
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
1
B3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
0
1
0
1
B2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
1
1
B1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
0
0
0
1
15
B0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
1
1
1
TREBLE USB
SIDE (dB)
31.75
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
...
...
...
...
minimum
0
2
4
6
6
6
6
TREBLE USB DAC (dB)
Preliminary specification
flat
0
0
0
0
0
0
0
UDA1321
maximum
0
2
4
6
6
6
6