Accessing The Eeprom - Dalsa 1M28-SA User Manual

1M28, 1M75, and 1M150 User's Manual

Accessing the EEPROM

Accessing the EEPROM Accessing the EEPROM Accessing the EEPROM
The first four registers are used to communicate with the configuration EEPROM of the camera.
Register address 0 contains the data, which is written to or read from the EEPROM. Register 1
contains the LSB of the storage address. Register 2 contains the MSB of the storage address as
well as the accessing code (OP code) for the EEPROM. The configuration EEPROM has a storage
capacity of 2 kB. Therefore, the valid storage addresses are 11 bits (A0 – A10) and range from
000H to 7FFH. After entering the data, the address, and the OP code, the information is transferred
to the EEPROM with the command SEND_PROM (write register address 3). To read bytes from
the EEPROM, the address and the OP code have to be transferred with the command
SEND_PROM to the EEPROM. The result can then be read from register address 0. An overview
of the registers that are used for the EEPROM programming is shown in Table 31: .
In order to be able to write to the EEPROM, the write protection must be disabled. The
PROM_BUSY and the AUTOLOAD flag in the EEPROM register address 4 Bit 1 or Bit 0 must
also be checked before writing to the EEPROM. Writing during the BUSY phase leads to
malfunctions of the camera. After writing, the write protection should be enabled again. This
happens automatically when the camera is switched off or loses power.
Table 31: Overview of Registers Used for the EEPROM Programming
Register address 0 - DATA_EEPROM
Bit
0 -7
Register address 1 – ADDR_LSB_EEPROM
Bit
0 - 7
Register address 2 – ADDR_MSB_EEPROM
Bit
0
1
2
3
4
5
6
7
DALSA
PRELIMINARY
Name
DATA_EEPROM
Name
ADDR_LSB_EEPROM
Name
ADDR_MSB_EEPROM
ADDR_MSB_EEPROM
ADDR_LSB_EEPROM
ADDR_LSB_EEPROM
ADDR_LSB_EEPROM
Not used
Not used
Not used
Appendix C Appendix C Appendix C Appendix C
Description
Data bit 0 – 7
Description
Address bit 0 – 7
Description
Address bit 8
Address bit 9 / OP-Code bit 0
Address bit 10 / OP-Code bit 1
OP-Code bit 2
OP-Code bit 3
-
-
-
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03-32-00525-04