SNC202
Direct Drive Speech Controller
5.6. Event Mark
This is a new function for SNC202, it allows user to add a special mark in wave data by
the voice edit tool “CoolEdit”. User can insert event tags in anywhere of his wave file
and can easy to get this special code to do his special action during voice playing. That
means, it should be easily to control the I/O (such as LED or motor) and other actions
to synchronize with voice.
5.7. I/O Ports
P3 is a 4-bit I/O ports. Any bit of P3 can be programmed as either input or output port
individually. Any valid data transition (HꢁL or LꢁH) of P3 can reactivate the chip
when the chip is in power-down mode.
Port Data
PAD
Port Status
Weak
To Internal Data Bus
Read Control
I/O Port Configuration (P30~P33)
Note:
(1) Weak N-MOS’s can serve as pull-low resistors.
(2) The driving and sink current of P3.2 and P3.3 are enhance to be 8mA/16mA.
So user can direct to drive the LED through those two I/O pins.
5
Ver: 1.1
June 8, 2005
SONIX [ SONIX TECHNOLOGY COMPANY ]
