66
PRELIMINARY
1M28, 1M75, and 1M150 User’s Manual
03-32-00525-04
DALSA
Command
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Read
1
0
A10
A9
A8
Write
0
1
A10
A9
A8
Write disable
0
0
0
0
X
Write enable
0
0
1
1
X
Abbreviations
0:
Logical state 0
1:
Logical state 1
X:
arbitrary state
Example of EEPROM Access
Table 32 summarizes the sequence of commands for data transmission to the EEPROM of the
camera. Depending on the access function, some steps may not be necessary. To write to the
EEPROM, steps 1-5 are necessary. To read from the EEPROM, skip step 1, but use steps 2-7.
Special cases are the EEPROM commands write enable/disable. In these cases only the steps 3-5
have to be used. The transmission protocol of the RS232 interface is defined in Appendix B.
Table 32: Access Steps for the EEPROM
Step
Action
1
Write data byte (D7-D0) in register address 00H, if required for function
2
Write LSB address byte (A7-A0) in register address 01H, if required for function
3
Write OP-Code und MSB address byte (xxx,OP1, OP2,A10-A8) in register address 02H
4
Read status register address 04H, wait for state „not (PROM_BUSY or AUTOLOAD)“
5
Write in register address 03H
Î
command SEND_PROM
6
Read status register address 04H, wait for state „not (PROM_BUSY or AUTOLOAD)“
7
Read databyte (D7-D0) in register address 00H, when data are read out from the EEPROM
The following example shows in detail the sequence of commands for the EEPROM command
write enable.