uda1321 NXP Semiconductors, uda1321 Datasheet - Page 22

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

Philips Semiconductors
1998 Oct 06
(HEX)
BYTE
Universal Serial Bus (USB)
Digital-to-Analog Converter (DAC)
1A
1B
1C
1D
1E
12
13
14
15
16
17
18
19
1F
20
11
GP1 and GP2 outputs
definition register
REGISTER
NAME
reserved
reserved
application GP2 function 2
application GP1 function 2
polarity GP2 function 1
polarity GP1 function 1
polarity GP2 function 2
polarity GP1 function 2
GP1 Usage Page if HID selected
GP1 Usage if HID selected
GP2 Usage Page if HID selected
GP2 Usage if HID selected
time between releasing standby and
enabling the audio output; steps of
20 ms
time between ‘no isochronous data
present’ and activating the mute
output; steps of 1 s (only applicable for
function 1, no digital I/O
communication)
time between activating the mute
output and activating the standby
output; steps of 5 s (only applicable for
function 1, no digital I/O
communication); when filled-in with
zero, standby will not be activated
default bass boost value on top of
Bass USB DAC for Dynamic Bass
Boost (DBB); see Table 5
default volume value of USB DAC
idVendor high byte
idVendor low byte
idProduct high byte
idProduct low byte
bmAttributes
maximum power steps of 2 mA with
maximum 500 mA
COMMENTS
22
BIT
7
6
5
4
3
2
1
0
0 = HID output 2
1 = LED output 2 (activated
when DBB is active)
0 = HID output 1
1 = LED output 1 (activated
when mute is active)
normal or inversed output
functionality:
0 = according Table 7
1 = inversed
bass boost = register value; if
bass boost + Bass USB DAC
is larger then the maximum
value of Table 5, the maximum
value is used (no bass boost
in flat mode)
volume = register value
Preliminary specification
VALUE
UDA1321