- 6 -

overwrite, or non-overwrite. The 8-bit structure of this register and the rising or falling edge of the

triggers corresponding to each bit are shown above. “ X” indicates a “ don’ t care” bit.

The TG1, 2, 5, 6 represents triggers 1, 2, 5 and 6 respectively; the “R” represents the rising edge; and

“F” represents the falling edge. When any one of the eight bits is set to “1”, the rising or falling edge of

the corresponding trigger pin can be enabled, interrupting the current state.

5.

STOP Register

BIT

7

6

5

4

3

2

1

0

STOP

X

X

X

STE

STD

STC

STB

STA

The STOP register stores stop output status information to determine the voltage level of each stop

output pin. The 8-bit structure of this register and the stop output pin corresponding to each bit are

show as above table. The “X” indicates a “don’ t care” bit. When a particular STOP bit is set to “1”, the

corresponding stop signal will be an active high output.

6.

R0-R3 Registers

These four registers are 8-bit register that stores the entry values of from 0 to 255 voice groups. R0 is

a special register that can be incremented by "INC" instruction.

Option Control Function

There are four types of option control in W523Sxx. They can be determined by a declaration in the

user

′s program file, but cannot be controlled by register.

FUNCTION

MASK OPTION

DECLARATION

DEFINITION

DEFPAGE 1

256 interrupt vector/label for 1 page, 1 page in total (1-page mode)

DEFPAGE 8

256 interrupt vector/label for 1 page, 8 pages in total (8-page mode)

DEFPAGE 16

128 interrupt vector/label for 1 page, 16 pages in total (16-page mode)

Page mode

configuration

DEFPAGE 32

64 interrupt vector/label for 1 page, 32 pages in total (32-page mode)

NORMAL

Normal mode operation

Operation

mode

CPU

CPU mode operation

OSC_3MHz

3 MHz oscillator

Oscillator

frequency

OSC_1.5MHz

1.5 MHz oscillator

VOUT_DAC

DAC (AUD) output

Voice

output type

VOUT_PWM

PWM output

"DEFPAGE" determines the page operation mode in W523Sxx. The default setting of the page mode

is 1-page mode. The 8-page, 16-page or 32-page mode can be declared to extend the voice group

entry from 256 to 2047 in PowerSpeech

™ program.

The W523Sxx can communicate with an external microprocessor through the simple serial CPU

interface, which is the same as the W583xx series. The CPU interface consists of the TG1, TG2, and

STPA/BUSY pins. "NORMAL" and "CPU" decide whether the operation mode of W523Sxx will be

normal mode or CPU mode.

"OSC_3MHz" and "OSC_1.5MHz" select the frequency of the system clock. "VOUT_DAC" and

"VOUT_PWM" select the voice output type.