uda1331h NXP Semiconductors, uda1331h Datasheet - Page 22

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

Philips Semiconductors
Table 7 No digital I/O communication
Notes
1. The input pins must have a pull-up resistor.
2. Connect/disconnect: holds the USB ‘disconnected’ as long as the initialization is not finished.
3. Alarm mute: input to switch the sound off; specially used if the USB host program does not respond to the control.
4. Standby is switched on (output becomes LOW) after a programmable time if the mute is active (see Byte 18 in
5. Mute is switched on (output becomes LOW) after a programmable time if the isochronous data flow is interrupted
6. For selection between HID/LED application see configuration map byte 11 (output is active HIGH).
Table 8 4-pins digital I/O communication
Notes
1. Connect/disconnect: holds the USB ‘disconnected’ as long as the initialization is not finished.
2. Alarm mute: input to switch the sound off; specially used if the USB host program does not respond to the control.
1998 Oct 06
Universal Serial Bus (USB) Audio
Playback Peripheral (APP)
This pin acts directly on the sound and passes the mute to the USB host.
Table 6).
(see Byte 17 in Table 6).
This pin acts directly on the sound and passes the mute to the USB host.
GP5
GP4
GP3
GP0
GP2
GP1
GP5
GP4
GP3
GP2
GP1
GP0
PIN
PIN
output; not programmable; note 2
inputs; programmable; note 1
outputs; programmable
output; not programmable; note 1
digital I/O-bus
input; programmable
INPUT/OUTPUT
INPUT/OUTPUT
connect/disconnect
alarm mute; note 3
HID input 2
HID input 1
standby; note 4
mute; note 5
connect/disconnect
BCKO
WSO
DO
DI
HID input 1
22
FUNCTION 1
FUNCTION 1
connect/disconnect
HID input 3
HID input 2
HID input 1
HID/LED output 2; note 6
HID/LED output 1; note 6
connect/disconnect
BCKO
WSO
DO
DI
alarm mute; note 2
Preliminary specification
FUNCTION 2
FUNCTION 2
UDA1331H