USER'S GUIDE

DS5001 CRC REGISTER

Label: CRC

Register Address: 0C1H

RNGE3

RNGE2

RNGE1

RNGE0

±±±

±±±

MDM

CRC

Bit Description:

CRC.7±4

RNGE3±0

 

Determines the range over which a power±up CRC will be performed.

 

Addresses are specified on 4K boundaries.

Initialization:

Reset to 0 on a No VLI reset.

Read Access:

Can be read at any time.

Write Access:

Cannot be written by the application software. Can only be written via the

 

Bootstrap Loader.

CRC.1

MDM

 

When set to 1, the bootstrap loader will attempt to use a modem (UART) on

 

PE4 if CRC is incorrect. This feature is no longer useful following the

 

obsoletion of the corresponding modem devices.

Initialization:

Reset to 0 on a No VLI reset.

Read Access:

Can be read at any time.

Write Access:

Cannot be written by the application software. Can only be written during

 

Program Load mode.

CRC.0

CRC

 

When set to 1, a CRC check will be performed on power±up or watchdog

 

timeout. CRC will be checked against stored values. An error will initiate

 

Program Load mode. This bit will not be present in the DS5002FP as the

 

device does not support the power±on CRC function.

Initialization:

Reset to 0 on a No VLI reset.

Read Access:

Can be read at any time.

Write Access:

Cannot be written by the application software. Can only be written during

 

Program Load mode.

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Mitsubishi DS907x SIP, DS5000TK manual DS5001 CRC Register, Label CRC Register Address 0C1H, RNGE3±0, CRC.1 MDM, CRC.0