ADV7175AKS Analog Devices Inc, ADV7175AKS Datasheet - Page 14

• Manufacturer Part Number: ADV7175AKS
• Manufacturer: Analog Devices Inc

Specifications of ADV7175AKS

• Adc/dac Resolution: 10b
• Screening Level: Commercial
• Package Type: MQFP
• Pin Count: 44
• Lead Free Status / RoHS Status: Not Compliant

ADV7175A/ADV7176A
Vertical Blanking Data Insertion
It is possible to allow encoding of incoming YCbCr data on those lines of VBI that do not bear line sync or pre/post-equalization
pulses (see Figures 15 to 26). This mode of operation is called “Partial Blanking” and is selected by setting MR31 to 1. It allows the
insertion of any VBI data (Opened VBI) into the encoded output waveform. This data is present in digitized incoming YCbCr data
stream (e.g., WSS data, CGMS, VPS, etc.). Alternatively, the entire VBI may be blanked (no VBI data inserted) on these lines by
setting MR31 to 0.
Mode 0 (CCIR-656): Slave Option
(Timing Register 0 TR0 = X X X X X 0 0 0)
The ADV7175A/ADV7176A is controlled by the SAV (Start Active Video) and EAV (End Active Video) time codes in the pixel
data. All timing information is transmitted using a 4-byte synchronization pattern. A synchronization pattern is sent immediately
before and after each line during active picture and retrace. Mode 0 is illustrated in Figure 14. The HSYNC, FIELD/VSYNC and
BLANK (if not used) pins should be tied high during this mode.
RTC
NOTES:
1
2
3
F
SEQUENCE BIT
RESET BIT
F
PAL: 0 = LINE NORMAL, 1 = LINE INVERTED
NTSC: 0 = NO CHANGE.
RESET ADV7175A/ADV7176A’s DDS.
BE WRITTEN TO THE SUB CARRIER FREQUENCY REGISTERS OF THE ADV7175A/ADV7176A.
SC
SC
PLL INCREMENT IS 22 BITS LONG, VALUED LOADED INTO ADV7175A/ADV7176A FSC DDS REGISTER IS
PLL INCREMENTS BITS 21:0 PLUS BITS 0:9 OF SUB CARRIER FREQUENCY REGISTERS. ALL ZEROS SHOULD
H/LTRANSITION
COUNT START
COMPOSITE
TIME SLOT: 01
OR CABLE
128
e.g., VCR
VIDEO
LOW
13
ADV7175A/ADV7176A
DECODER
ADV7185
RESERVED
VIDEO
14 BITS
NOT USED IN
LLC1
P19–P12
0
14
GLL
RESERVED
4 BITS
19
21
CLOCK
SCRESET/RTC
HSYNC
VSYNC/FIELD
P7–P0
ADV7175A/ADV7176A
SAMPLE
FSCPLL INCREMENT
VALID
BLUE/COMPOSITE/U
RED/CHROMA/V
GREEN/LUMA/Y
SAMPLE
INVALID
COMPOSITE
1
RESERVED
5 BITS
8/LLC
0
SEQUENCE
BIT
2
67 68
RESET
BIT
3
RESERVED