参数资料
型号: ADV7184BSTZ
厂商: Analog Devices Inc
文件页数: 33/112页
文件大小: 0K
描述: IC DECODER VID SDTV MULTI 80LQFP
标准包装: 1
类型: 视频解码器
应用: 投影仪,录音机,安全
电压 - 电源,模拟: 3.15 V ~ 3.45 V
电压 - 电源,数字: 1.65 V ~ 2 V
安装类型: 表面贴装
封装/外壳: 80-LQFP
供应商设备封装: 80-LQFP(14x14)
包装: 托盘
ADV7184
Rev. A | Page 27 of 112
Lock-Related Controls
Lock information is presented to the user through Bits [1:0] of
Status Register 1. See the Status Register 1 [7:0], Address 0x10
[7:0] section. Figure 13 outlines the signal flow and the controls
that are available to influence how the lock status information is
generated.
SRLS, Select Raw Lock Signal, Address 0x51 [6]
Using the SRLS bit, the user can choose between two sources for
determining the lock status, which is indicated via Status Register 1,
Bits [1:0].
The TIME_WIN signal is based on a line-to-line evaluation of
the horizontal synchronization pulse of the incoming video. It
reacts quickly.
The FREE_RUN signal evaluates the properties of the incoming
video over several fields, taking vertical synchronization
information into account.
0 (default)—Selects the FREE_RUN signal.
1—Selects the TIME_WIN signal.
054
79
-0
13
1
0
TIME_WIN
FREE_RUN
IN_LOCK
SELECT THE RAW LOCK SIGNAL
SRLS
FILTER THE RAW LOCK SIGNAL
CIL[2:0], COL[2:0]
TAKE Fsc LOCK INTO ACCOUNT
FSCLE
LOST_LOCK
Fsc LOCK
1
0
COUNTER INTO LOCK
COUNTER OUT OF LOCK
MEMORY
Figure 13. Lock-Related Signal Path
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