LC83010N View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LC83010N

Audio Digital Signal Processor

SANYO -> Panasonic 

LC83010N, 83010NE

Program Load to The LC83010N

- Boot procedure -

Programs must be loaded (boot strap) into the LC83010N (D2SP) from an external control unit (microcomputer) because

its internal program memory consists of RAMs. The capacity of the program memory is 320 words × 32 bits.

The procedural flow to load a 320-word program into the D2SP from a controlling microcomputer is shown in Figure A-

1.

(1) Reset the entire system (microcomputer and D2SP) or reset the D2SP from the controlling microcomputer.

After the D2SP is reset, it then enters the Boot mode.

(2) Transfer the program to the D2SP from the microcomputer. The program is transferred to the D2SP in 8-bit synchro-

nous serial communication mode.

The program data of 8 bits × 16 data (equal to 4 instructions) is transferred to the D2SP continuously from the

microcomputer, and followed by the SRDY signal. The D2SP stores that program data of 4 instructions to the internal

mail box. The program data is then moved to the program RAM at the moment when the SRDY signal reaches the

D2SP.

(3) The operations discussed in (2) are repeated 80 times until the program data transfer of 320 instructions from the

microcomputer to the D2SP is complete.

(4) The D2SP automatically starts the program execution when the program loading of 320 instructions is complete.

The program is transferred to the D2SP from the microcomputer in that manner.

Figure A-1. Example Program Boot Flow (D2SP ← Microcomputer)

No.3945–10/18

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