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參數資料
| 型號： | UDA1331H |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | Universal Serial Bus USB Audio Playback Peripheral APP |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | 14 X 20 MM, 2.80 MM HEIGHT, PLASTIC, SOT-319-2, QFP-64 |
| 文件頁數： | 22/40頁 |
| 文件大小： | 181K |
| 代理商： | UDA1331H |
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1998 Oct 06
22
Philips Semiconductors
Preliminary specification
Universal Serial Bus (USB) Audio
Playback Peripheral (APP)
UDA1331H
Table 7
No digital I/O communication
Notes
1.
2.
3.
The input pins must have a pull-up resistor.
Connect/disconnect: holds the USB ‘disconnected’ as long as the initialization is not finished.
Alarm mute: input to switch the sound off; specially used if the USB host program does not respond to the control.
This pin acts directly on the sound and passes the mute to the USB host.
Standby is switched on (output becomes LOW) after a programmable time if the mute is active (see Byte 18 in
Table 6).
Mute is switched on (output becomes LOW) after a programmable time if the isochronous data flow is interrupted
(see Byte 17 in Table 6).
For selection between HID/LED application see configuration map byte 11 (output is active HIGH).
4.
5.
6.
Table 8
4-pins digital I/O communication
Notes
1.
2.
Connect/disconnect: holds the USB ‘disconnected’ as long as the initialization is not finished.
Alarm mute: input to switch the sound off; specially used if the USB host program does not respond to the control.
This pin acts directly on the sound and passes the mute to the USB host.
PIN
INPUT/OUTPUT
FUNCTION 1
FUNCTION 2
GP5
GP4
GP3
GP0
GP2
GP1
output; not programmable; note 2
inputs; programmable; note 1
connect/disconnect
alarm mute; note 3
HID input 2
HID input 1
standby; note 4
mute; note 5
connect/disconnect
HID input 3
HID input 2
HID input 1
HID/LED output 2; note 6
HID/LED output 1; note 6
outputs; programmable
PIN
GP5
GP4
GP3
GP2
GP1
GP0
INPUT/OUTPUT
FUNCTION 1
FUNCTION 2
output; not programmable; note 1
digital I/O-bus
connect/disconnect
BCKO
WSO
DO
DI
HID input 1
connect/disconnect
BCKO
WSO
DO
DI
alarm mute; note 2
input; programmable
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