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10.2 Register description - sensor control group
10.2.1 Register address 00H – 03H (EEPROM control)
The first 4 registers are used to communicate with the EEPROM of the camera. The
read/write register address 00H contains the data for the EEPROM. The register
addresses 01H and 02H are write-only and contain the EEPROM R/W addresses as well as
the OP-code. Register address 03H is used as a command for accessing the EEPROM.
More information can be found in Appendix D.
10.2.2 Register Addresses 1, 2, 4 and 5: status registers 0, 1, 3 and 4
Status register 0 (address 01H) contains the signature byte 46H = ASCII F. Status
register 1 (address 02H) contains the hardware revision. The bits of status register 3
(address 04H) and status register 4 (address 05H) are used for internal states of the
sensor control group. Sensor module status information is available in status register 3,
while intermittent errors occurring during the operation of the camera are stored in
status register 4. The error bits in status register 4 can be reset by writing a logical '1' to
the corresponding bit.
The definitions of the individual bits of these registers are summarized in Table 11 and
Table 12. Bit 0 and bit 1 of status register 3 contain information about the state of the
EEPROM when storing camera settings. If the camera is in the AUTOLOAD state (after
power-on or reset of the camera), the settings are being copied from the EEPROM to the
internal registers. During this phase, EEPROM access is not permitted because
otherwise incorrect information will get into the internal camera register. The
PROM_BUSY state indicates an uncompleted writing cycle (active memory load) during
write access to the EEPROM. EEPROM access in this condition should always be
avoided! Bit 2 serves as a signature bit for the sensor module and is permanently set to
zero.
Table 11: Status register 3 (register address REGADDR = 4D = 04H)
Register address 4 - STATUS3_REG
bit
Description
0
= 1
AUTOLOAD, signals power-up or Reload of data (from EEPROM),
! No write operations to EEPROM allowed !
1
= 1
PROM_BUSY, ! No write operations to EEPROM allowed !
2
always 0
sensor module
3
Not used = 0
4
Not used = 0
5
Not used = 0
6
Not used = 0
7
Not used = 0
REV: 1.0
MV-D752-28 User's Manual
Page 27/61
Default
0
0
0
0
0
0
0
0
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