uda1331h NXP Semiconductors, uda1331h Datasheet - Page 13

• Manufacturer Part Number: uda1331h
• Description: Universal Serial Bus Usb Audio Playback Peripheral App
• Manufacturer: NXP Semiconductors

Philips Semiconductors
T
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.
1998 Oct 06
Table 4 Treble control characteristics
REBLE CONTROL
Universal Serial Bus (USB) Audio
Playback Peripheral (APP)
B7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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
13
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 APP (dB)
Preliminary specification
flat
UDA1331H
0
0
0
0
0
0
0
maximum
0
2
4
6
6
6
6