ADV7195
MODE REGISTER 4
MR4 (MR47–MR40)
(Address (SR4–SR0) = 04H)
Figure 55 shows the various operations under the control of
Mode Register 4.
MR4 BIT DESCRIPTION
Timing Reset (MR40)
Toggling MR40 from low to high and low again resets the inter-
nal horizontal and vertical timing counters.
Reserved (MR41–MR47)
A “0” must be written to these bits.
Color Output Swap (MR53)
By default DAC B is configured as the Pr output and DAC C as
the Pb output. In setting this bit to “1,” the DAC outputs can
be swapped around so that DAC B outputs Pb and DAC C out-
puts Pr. Table X demonstrates this in more detail.
Reserved (MR54–MR57)
A “0” must be written to these bits.
Table X. Relationship Between Input Pixel Port, MR53
and DAC B, DAC C Outputs
In 4:4:4 Input Mode
MODE REGISTER 5
MR5 (MR57–MR50)
(Address (SR4–SR0) = 05H)
Figure 56 shows the various operations under the control of
Mode Register 5.
Color Data
Input on Pins
Cr9–0
Cb/Cr9–0
Cr9–0
Cb/Cr9–0
MR53
0
0
1
1
Analog Output
Signal
DAC B
DAC C
DAC C
DAC B
MR5 BIT DESCRIPTION
Reserved (MR50)
In 4:2:2 Input Mode
This bit is reserved for the revision code.
Color Data
Analog Output
RGB Mode (MR51)
When RGB mode is enabled (MR51 = “1”), the ADV7195
accepts unsigned binary RGB data at its input port. This control
is also available in Async Timing Mode.
Input on Pins
Cr9–0
Cb/Cr9–0
Cb/Cr9–0
MR53
0 or 1
0
1
Signal
Not Operational
DAC C (Pb)
DAC C (Pr)
Sync on PrPb (MR52)
By default the color component output signals Pr, Pb do not con-
tain any horizontal sync pulses. If required, they can be inserted
when MR52 = “1.” This control is not available in RGB Mode.
MR47
MR46
MR45
MR44
MR43
MR42
MR41
MR40
MR47 – MR41
ZERO MUST BE
WRITTEN TO
THESE BITS
Figure 55. Mode Register 4
TIMING RESET
MR40
MR57
MR56
MR55
MR54
MR53
MR52
MR51
MR50
MR57 – MR54
COLOR OUTPUT SWAP
SYNC ON PrPb
MR50
ZERO MUST
BE WRITTEN
TO THESE BITS
MR53
0
1
DAC B = PR
DAC C = R
MR52
0 DISABLE
1 ENABLE
RESERVED FOR
REVISION CODE
RGB MODE
MR51
0 DISABLE
1 ENABLE
Figure 56. Mode Register 5
REV. A
–29 –
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