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參數資料
| 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： | 15/48頁 |
| 文件大小： | 356K |
| 代理商： | 935261615118 |
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1998 Oct 06
22
Philips Semiconductors
Preliminary specication
Universal Serial Bus (USB)
Digital-to-Analog Converter (DAC)
UDA1321
11
GP1 and GP2 outputs
denition register
reserved
7
reserved
6
application GP2 function 2
5
0 = HID output 2
1 = LED output 2 (activated
when DBB is active)
application GP1 function 2
4
0 = HID output 1
1 = LED output 1 (activated
when mute is active)
polarity GP2 function 1
3
normal or inversed output
functionality:
0 = according Table 7
1 = inversed
polarity GP1 function 1
2
polarity GP2 function 2
1
polarity GP1 function 2
0
12
GP1 Usage Page if HID selected
13
GP1 Usage if HID selected
14
GP2 Usage Page if HID selected
15
GP2 Usage if HID selected
16
time between releasing standby and
enabling the audio output; steps of
20 ms
17
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)
18
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 lled-in with
zero, standby will not be activated
19
default bass boost value on top of
Bass USB DAC for Dynamic Bass
Boost (DBB); see Table 5
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 at mode)
1A
default volume value of USB DAC
volume =
register value
1B
idVendor high byte
1C
idVendor low byte
1D
idProduct high byte
1E
idProduct low byte
1F
bmAttributes
20
maximum power steps of 2 mA with
maximum 500 mA
BYTE
(HEX)
REGISTER
NAME
COMMENTS
BIT
VALUE
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