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W523S20 Datasheet(PDF) 9 Page - Winbond |
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W523S20 Datasheet(HTML) 9 Page - Winbond |
9 / 14 page W523SXX (PRELIMINARY) Publication Release Date: Oct 2000 - 9 - Revision A5 TG1 TG2 (Data) (Clock) 0 1 0 0 0 1 0 0 MSB LSB <1> <2> <3> <4> DEB T CRD T <1> When TG1 is pulled low, the W523Sxx stops playing voice or executing instruction and waits for data from the external µC. <2> If TG1 is debounced OK, the W523Sxx will clear the CPU receiving buffer. <3> 8-bit data are transferred by TG1 (Data) and TG2 (Clock). LSB is sent firstly. <4> TG1 returns to high and starts the CPU interrupt service. In this case W523S15 will play the H51+voice2+T51 sections and the STPA/BUSY pin is pulled high during the playing period. The TG1 pin, which is pulled high with a 500K Ω resistor, should be kept high during non-transmission periods to reduce power consumption. The external µC should be connected to the W523Sxx by an inverted-type output port for better noise immunity. In CPU mode, the W523Sxx stops operating upon the falling edge of the TG1 pin. For the CPU interface to work normally, TG1F should be disabled. Thus, one suggestion is that TG1F, TG1R, TG2F, and TG2R should all be disabled in CPU mode. The master frequency of the external µC, and hence the clock rate of TG1 and TG2, tends to vary among different vendors and applications. Note: In CPU mode application, in case the last voice group entry point, 255, is no used, it should be typed “ END” command to avoid abnormal operating. Instruction Set List There are two types of instruction in the W523Sxx, unconditional and conditional instructions. The first types of instructions are executed immediately after they are issued. The second types of instructions are executed only when the conditions specified in the instruction are satisfied. All the instructions are listed in the following table. The cycle time for each instruction is 2/Sampling Frequency (Fs). For example, Fs = 6.0 KHz, the cycle time is 333 µS. UNCONDITIONAL CONDITIONAL JP G JP G @STS JP Rn JP Rn @STS LD EN0, value LD EN0, value @STS LD EN1, value LD EN1, value @STS LD MODEi, value LD MODEi, value @STS LD STOP, value LD STOP, value @STS LD PAGE, value LD PAGE, value @STS LD Rn, value LD Rn, value @STS END END @STS MV Rn, Rm MV Rn, Rm @STS INC INC @STS |
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