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LC83010NE

Audio Digital Signal Processor

SANYO -> Panasonic 

LC83010N, 83010NE

(3) ICE outline

The In-Circuit Emulator (ICE) provides an operating environment where the application program already checked by

the simulation debugger is executed and then outputs audio signals. The ICE functions can be divided into two: One is

the program evaluation by outputting audio signals only on the ICE. In this evaluation method, delay can be produced

by the DRAM in the ICE system. The other is the final program evaluation by connecting a user application board to

the ICE system. In this test method, the interfaces to the controlling microcomputer and other various peripheral ICs

on the application board can be evaluated. Figure A-8 shows the ICE system configuration for the entire evaluation

using a user application board.

Figure A-8. Final Evaluation System Configuration with an Application Board and ICE

ICE functions

· The ICE has debugging functions.

· The ICE consists of unique hardware functions specifically designed as the ICE for audio DSP.

(a) ICE debugging functions

(1) Execution command : Allows the program execution to continue until a break point is detected. It also enables

the program execution in the step mode or in the trace mode.

(2) Break function : Enables the user to set a desired break point.

(3) The edit dump command is useful in displaying the conditions of a specified memory area after the break of

program execution. The register edit command is used to convert the contents of a present specified register.

(4) The memory dump command is useful in displaying the contents of a specified memory area when the program

execution breaks. On the other hand, the edit command is used to edit the contents of a specified memory area

when the program execution breaks.

(5) Program modification and confirmation : Enables the user to modify part of the program and to check how it

works.

(6) Other functions : Memory management facility and so on. For details, refer the sections following section 8-3.

(b) Unique ICE hardware configuration

(1) Audio data input/output : Digital Interface Receiver (DIR).

This function allows direct input of audio digital data. Digital Interface Transmitter (DIT). This function allows

direct output of 3-channel digital audio data.

(2) DRAM : Delay DRAM for audio signal. 256k (64k × 4 bits) × 2. 1M (256k × 4 bits) × 2

(3) Evaluation function of serial input/output : Z80 microcomputer for evaluating serial input/output. This control

unit makes an access to the D2SP instead of any controlling microcomputer to adjust the serial input/output

operations.

No.3945–15/18

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