Specifications

88 Issue Date: 2004/11/05 │ CONFIDENTIAL

CL765 │ Camera Application Processor

Datasheet

│ Doc. #: CLQP-DS-743

4.15. INTERRUPT SETUP

The CL765 supports Interrupt. Interrupt means the completion of several

operations such as Encoding and Decoding. Edge interrupt and Level interrupt

are supported. Interrupt is classified as follows.

a. Operation completion: shows the completion of operations such as

JPEG, OSD, and MJPEG.

b. Operation status: shows the status of operations such as JPEG Capture

and Decoding.

c. Interrupt related to Flow Control

d. Interrupt related to LCD

-. LCD Control Enable : used when CPU requests LCD occupancy while

performing Preview in use of LCD Control Flag. Preview is stopped

and Interrupt is generated.

-. LCD Display End : Generated after displaying each frame on LCD.

Used when CPU directly displays UI on some part of LCD between

frames displayed on LCD. Timing is very important because CPU

should update some part of LCD without skipping Preview after

Interrupt had been generated.

e. Interrupt related to DMA / SD CARD / NAND Flash / USB

4.15.1. Interrupt Mode Setup

a) In Register 0x06, set Interrupt Mode.

0x06 Bit[1] EDGE/LEVEL Interrupt setup

0x06 Bit[5:2] The length of EDGE Interrupt

0x091 Bit[5] Set Status Register Clear Mode from LEVEL interrupt Mode

Table 4-24. Interrupt Mode

b) Interrupt Mask setup

Available to control Interrupt generation. Each bit of Interrupt Status

the interrupt necessary for Status register, relevant bit should be cleared

from Interrupt mask.

Status Register Mask Register Description

0x05 0x0C Interrupt related to the CL765 Operation

0xe8 0xe7 Interrupt related to Flow Control and etc

Table 4-25. Interrupt Mask Mode