参数资料
型号: ADV7183BKSTZ
厂商: Analog Devices Inc
文件页数: 11/100页
文件大小: 0K
描述: IC VIDEO DECODER NTSC 80-LQFP
产品培训模块: Interfacing AV Converters to Blackfin Processors
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
产品目录页面: 788 (CN2011-ZH PDF)
ADV7183B
Rev. B | Page 18 of 100
Drive Strength Selection (Clock)
DR_STR_C[1:0] Address 0xF4[3:2]
The DR_STR_C[1:0] bits can be used to select the strength of
the clock signal output driver (LLC pin). For more information,
refer to the
157H
Drive Strength Selection (Sync) and the
158H
Drive
Strength Selection (Data) sections.
Table 12. DR_STR_C Function
DR_STR_C[1:0]
Description
00
Low drive strength (1×)
01 (default)
Medium low drive strength (2×)
10
Medium high drive strength (3×)
11
High drive strength (4×)
Drive Strength Selection (Sync)
DR_STR_S[1:0] Address 0xF4[1:0]
The DR_STR_S[1:0] bits allow the user to select the strength of
the synchronization signals with which HS, VS, and F are
driven. For more information, refer to the
159H
Drive Strength
Selection (Clock) and the
160H
Drive Strength Selection (Data)
sections.
Table 13. DR_STR_S Function
DR_STR_S[1:0]
Description
00
Low drive strength (1×)
01 (default)
Medium low drive strength (2×)
10
Medium high drive strength (3×)
11
High drive strength (4×)
Enable Subcarrier Frequency Lock Pin
EN_SFL_PIN Address 0x04[1]
The EN_SFL_PIN bit enables the output of subcarrier lock
information (also known as GenLock) from the ADV7183B to
an encoder in a decoder-encoder back-to-back arrangement.
When EN_SFL_PIN is 0 (default), the subcarrier frequency lock
output is disabled.
When EN_SFL_PIN is 1, the subcarrier frequency lock infor-
mation is presented on the SFL pin.
Polarity LLC Pin
PCLK Address 0x37[0]
The polarity of the clock that leaves the ADV7183B via the
LLC1 and LLC2 pins can be inverted using the PCLK bit.
Changing the polarity of the LLC clock output can be necessary
to meet the setup-and-hold time expectations of follow-on
chips.
This bit also inverts the polarity of the LLC2 clock.
When PCLK is 0, the LLC output polarity is inverted.
When PCLK is 1 (default), the LLC output polarity is normal
(as per the timing diagrams).
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