Memory - Sony VPL-CS4 Service Manual

2-6. Memory

Memory structure consists of the following five memory
blocks.
1. Set memory
2. Status memory
3. Channel memory
4. Chroma memory
5. W/B memory
CPU internal ROM : 256 kbyte Flash Memory
CPU internal ROM : 16 kbyte
External NVM memory : 8 kbyte EEPROM
Set Memory
Status
Memory
Channel
Memory
Chroma
Memory
W/B
Memory
CPU ROM
2-8
Set Memory
No.01
Status
No.02 Memory
No.03
No.04
No.05
...
No.50
Video
Channel
Memory
S-Video
Input-A
NT358/443/BW60
Chroma
Memory
PAL/PAL-M/N/
SECAM/BW50
15kRGB
Component(15k)
W/B
HIGH
Memory
LOW
HIGH
LOW
Initialize
Gamma mode functions are actualized by offsetting the
output values to the Contrast and Brightness devices.
When the power plug is connected to the power line
(Standby status), all data inside the internal ROM are
written into the NVM (Nonvolatile Memory). When the
power is turned to on, required data for the current picture,
such as status memory data, etc., are selected, and they are
written into the internal RAM.
When adjustment is carried out, adjustment data are
written into the NVM automatically (items on the user
mode) or by the trigger of memory operation (items on the
service mode and factory mode), then stored them.
Adjustable items (W/B and Device Adjust) of the service
mode and factory mode are memorized into the NVM by
the memory operation. At the same time, the factory preset
(adjusted) data are all eliminated from the memory.
Set Memory
No.01
Status Memory
No.02
No.03
No.04
No.05
...
No.50
No.71
...
No.90
Video
Channel Memory
S-Video
Input-A
NT358/443/BW60
Chroma Memory
PAL/PAL-M/N/
SECAM/BW50
15kRGB
Component(15k)
W/B
HIGH
Memory
LOW
HIGH
LOW
External NVM
Memory
Active memory copy
HIGH
LOW
CPU RAM
VPL-CS4/CX4