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CHRONTEL
CH7013A
201-0000-041 Rev. 1.0, 6/14/2000
25
Registers and Programming
The CH7013A is a fully programmable device, providing for full functional control through a set of registers
accessed from the serial port. The CH7013A contains a total of 37 registers, which are listed in
Table15
and
described in detail under
Register Descriptions
. Detailed descriptions of operating modes and their effects are con-
tained in the previous section,
Functional Description.
An addition (+) sign in the Bits column below signifies that
the parameter contains more than 8 bits, and the remaining bits are located in another register.
Table 15. Register Map
Register
Symbol
Address
Bits
Functional Summary
Display Mode
DMR
00H
8
Display mode selection
Flicker Filter
Video Bandwidth
FFR
VBW
01H
03H
6
7
Flicker filter mode selection
Luma and chroma filter bandwidth selection
Input Data Format
IDF
04H
7
Data format and bit-width selections
Clock Mode
CM
06H
8
Sets the clock mode to be used
Start Active Video
SAV
07H
8+
Active video delay setting
Position Overflow
PO
08H
3
MSB bits of position values
Black Level
BLR
HPR
09H
0AH
8
8+
Black level adjustment input latch clock edge select
Enables horizontal movement of displayed image on
TV
Horizontal Position
Vertical Position
VPR
0BH
8+
Enables vertical movement of displayed image on
TV
Determines the horizontal and vertical sync polarity
Sync Polarity
Power Management
SPR
0DH
4
PMR
0EH
5
Enables power saving modes
Connection Detect
Contrast Enhancement
CDR
CE
10H
11H
4
3
Detection of TV presence
Contrast enhancement setting
PLL M and N extra bits
MNE
13H
5
Contains the MSB bits for the M and N PLL values
PLL-M Value
PLL-N Value
PLLM
PLLN
14H
15H
8+
8+
Sets the PLL M value - bits (7:0)
Sets the PLL N value - bits (7:0)
Buffered Clock
BCO
17H
6
Determines the clock output at pin 41
Subcarrier Frequency
Adjust
PLL and Memory Control
FSCI
18H -1FH
4 or 8
each
6
Determines the subcarrier frequency
PLLC
20H
Controls for the PLL and memory sections
CIV Control
Calculated Fsc Increment
Value
CIVC
CIV
21H
22H - 24H
5
8 each
Control of CIV value
Readable register containing the calculated
subcarrier increment value
Version ID
Test
VID
TR
25H
26H - 29H
8
30
Device version number
Reserved for test (details not included herein)
Address
AR
3FH
6
Current register being addressed