SNC725

16-bit Voice Processor

Ver:1.2

October 23, 2002

4

5. RAM TABLE

Total RAM size is 2K words, and one bank is 512 words. If user need playing voice

(2Kbps, 3.6Kbps, 12Kbps, dual-tone melody and 4-ch wave-table melody), the system

will reserve 1.5K words RAM size.

6. System Clock

The system clock source can be selected from 16Mhz crystal or ROSC. For the ROSC,

user should connect two resistors in the pin “XIN” and “XOUT” instead of 16MHZ crystal.

Beside, the clock source select pin “CKSEL” also should be connected to VDD for ROSC.

In order to get an accurate system clock by ROSC, the real time clock source is

recommended to connect a 32768HZ crystal for system clock calibration.

Bank0

Bank1

Bank2

Bank3

Free for User

0x0000

0x01FF

0x0200

0x03FF

0x0400

0x05FF

0x0600

0x07FF

Reserved for

OS and Voice

Algorithm