FS401LF ETC2 [List of Unclassifed Manufacturers], FS401LF Datasheet - Page 66

• Manufacturer Part Number: FS401LF
• Description: PC to TV Video Scan Converters
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

FS401, FS403
4.5.38 CCR – Configuration Command Register
Configuration Command Register Low (78)
Configuration Command Register High (79)
Reg
78
79
The CCR and CDR registers are used to access constants and variables inside the internal micro-
controller. The definitions of these parameters are found in section 4.5.40.
To read from a configuration parameter, write 0001 to the command field and the configuration parameter
address in the address field of the CCR. These values must be written with one operation. Next, poll the
CCR until it becomes zero. Be sure to include a delay between polling reads to prevent stopping the
internal CPU from having access to the SIO registers. Then read the CDR to retrieve the value of the
specified configuration parameter.
To write to a configuration parameter, write the data to the CDR. Next, write 0010 to the command field
and the configuration parameter address in the address field of the CCR. When the CCR because zero,
the write operation is complete. Be sure to include a delay between polling reads to prevent stopping the
internal CPU from having access to the SIO registers.
Reset Value:
JANUARY 24, 2007
ADDR
7
7
0
7
Bit#
7-0
3-0
ADDR
0x0000
6
6
Bit Name
ADDR
CMD
0
6
3-0
7-0
ADDR
5
5
0
Description
Parameter Address
This field contains the address of the configuration parameter to be
accessed.
Command
0000
0001
0010
5
Command complete. The internal controller writes this.
Read from the configuration parameter.
After the command is complete CDR contains the data.
Write to the configuration parameter.
The CDR must contain the data to write before CCR is written.
ADDR
4
4
0
4
66
ADDR
CMD
3
3
3
COPYRIGHT © 1999 FOCUS ENHANCEMENTS, INC.
3
ADDR
CMD
2
2
2
2
PRODUCT SPECIFICATION
ADDR
CMD
1
1
1
1
REV. NO. 1.7
ADDR
CMD
0
0
0
0