adv7314 Analog Devices, Inc., adv7314 Datasheet - Page 52

• Manufacturer Part Number: adv7314
• Description: Multiformat 216 Mhz Video Encoder With Six Nsv 14-bit Dacs
• Manufacturer: Analog Devices, Inc.

ADV7314
Adaptive Filter Control Application
Figures 44 and 45 show a typical signal to be processed by the
adaptive filter control block.
The following register settings were used to obtain the results
shown in Figure 45, i.e., to remove the ringing on the Y signal.
Input data was generated by an external signal source.
Figure 45. Output Signal after Adaptive Filter Control
Figure 44. Input Signal to Adaptive Filter Control
*All other registers at normal settings.
Address
00h
01h
02h
10h
11h
15h
20h
38h
39h
3Ah
3Bh
3Ch
3Dh
Table XIV.
Register Setting
FCh
38h
20h
00h
81h
80h
00h
ACh
9Ah
88h
28h
3Fh
64h
@: 446mV
@: 12.8ms
@: 446mV
@: 12.8ms
: 692mV
: 332ns
: 692mV
: 332ns
–52–
When changing the adaptive filter mode to Mode B, [Address
15h, Bit 6], the following output can be obtained:
The adaptive filter control can also be demonstrated using the
internally generated cross hatch test pattern and toggling the
adaptive filter control bit [Address 15h, Bit 7].
Figure 46. Output Signal from Adaptive Filter Control
Address
00h
01h
02h
10h
11h
15h
20h
38h
39h
3Ah
3Bh
3Ch
3Dh
Table XV.
Register Setting
FCh
38h
20h
00h
85h
80h
00h
ACh
9Ah
88h
28h
3Fh
64h
@: 446mV
@: 12.8ms
: 674mV
: 332ns
REV. 0