ASX340AT_16 Datasheet, PDF(24/54 Page) ON Semiconductor – 1/4‐inch Color CMOS NTSC/PAL Digital Image SOC

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ASX340AT_16 Datasheet, PDF (24/54 Pages) ON Semiconductor – 1/4‐inch Color CMOS NTSC/PAL Digital Image SOC

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ASX340AT

Issue the SYSMGR_SET_STATE Command

All DevWare presets supplied by ON Semiconductor poll

and test the doorbell bit after issuing the command.

Therefore there is no need to check if the doorbell bit is clear

before issuing the next command.

# Set the desired next state in the parameters pool(SYS_STATE_ENTER_CONFIG_CHANGE)

REG= 0xFC00, 0x2800 // CMD_HANDLER_PARAMS_POOL_0

# Issue the HC_SYSMGR_SET_STATE command

REG= 0x0040, 0x8100 // COMMAND_REGISTER

# Wait for the FW to complete the command (clear the Doorbell bit)

POLL_FIELD= COMMAND_REGISTER, DOORBELL,!=0, DELAY=10, TIMEOUT=100

# Check the command was successful

ERROR_IF= COMMAND_REGISTER, HOST_COMMAND,!=0, âSet State command failedâ,

Summary of Host Commands

Table13 through Table 21 show summaries of the host

commands. The commands are divided into the following

sections:

â¢ System Manager

â¢ Overlay

â¢ GPIO

â¢ Flash Manager

â¢ Sequencer

â¢ Patch Loader

â¢ Miscellaneous

â¢ Calibration Stats

Following is a summary of the Host Interface commands.

The description gives a quick orientation. The âTypeâ

column shows if it is an asynchronous or synchronous

command. For a complete list of all commands including

parameters, consult the Host Command Interface

Specification document.

TABLE 16. SYSTEM MANAGER COMMANDS

System Manager

Host Command

Value

Set State

0x8100

Get State

0x8101

Type

Synchronous

Description

Request the system enter a new state

Get the current state of the system

TABLE 17. OVERLAY HOST COMMANDS

Overlay Host

Command

Value

Enable Overlay

0x8200

Get Overlay State

0x8201

Set Calibration

0x8202

Set Bitmap Property

0x8203

Get Bitmap Property

0x8204

Set String Property

0x8205

Load Buffer

0x8206

Load Status

0x8207

Write Buffer

0x8208

Read Buffer

0x8209

Enable Layer

0x820A

Get Layer Status

0x820B

Set String

0x820C

Type

Synchronous

Asynchronous

Synchronous

Description

Enable or disable the overlay subsystem

Retrieve the state of the overlay subsystem

Set the calibration offset

Set a property of a bitmap

Get a property of a bitmap

Set a property of a character string

Load an overlay buffer with a bitmap (from Flash)

Retrieve status of an active load buffer operation

Write directly to an overlay buffer

Read directly from an overlay buffer

Enable or disable an overlay layer

Retrieve the status of an overlay layer

Set the character string

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