参数资料
型号: AD9887AKSZ-140
厂商: Analog Devices Inc
文件页数: 21/52页
文件大小: 0K
描述: IC INTRFACE ANALOG/DVI 160-MQFP
标准包装: 24
应用: 图形卡,VGA 接口
接口: 模拟和数字
电源电压: 3.15 V ~ 3.45 V
封装/外壳: 160-BQFP
供应商设备封装: 160-MQFP(28x28)
包装: 托盘
安装类型: 表面贴装
产品目录页面: 788 (CN2011-ZH PDF)
AD9887A
Rev. B | Page 28 of 52
SCAN FUNCTION
The scan function is intended as a pseudo JTAG function for the
manufacturing test of the board. The ordinary operation of the
AD9887A is disabled during scanning. To enable the scan function,
set Register 0x14, Bit 2, to 1. To scan data to all 48 digital outputs,
apply 48 serial bits of data and 48 clock cycles (typically 5 MHz,
maximum of 20 MHz) to the SCANIN and SCANCLK pins,
respectively. The data is shifted in upon the rising edge of SCANCLK.
The first serial bit shifted in appears at the RED A<7> output after
one clock cycle.
After the next clock cycle, the first bit is shifted to RED A<6> and
the next bit appears at RED A<7>. After 48 clock cycles, the first
bit is shifted to the BLUE B<0> output and the 48th bit appears
at the RED A<7> output. If SCANCLK continues after 48 cycles,
the data continues to be shifted from RED A<7> to BLUE B<0>
and comes out of the SCANOUT pin as serial data upon the falling
edge of SCANCLK. This is illustrated in Figure 30. A setup time (tSU)
of 3 ns should be more than adequate; no hold time (tHOLD) is
required (0 ns). This is illustrated in Figure 31.
X
BIT 1
BIT 2
X
BIT 1
BIT 2
BIT 47
BIT 48
X
BIT 46
BIT 47
BIT 48
X
SCANCLK
RED A<7>
BLUE B<0>
SCANOUT
SCANIN
BIT 1
BIT 2
BIT 3
BIT 1
BIT 2
BIT 3
XXX
X
02838-012
Figure 30. Scan Timing
SCANCLK
SCANIN
02838-013
tSU = 3ns
tHOLD = 0ns
Figure 31. Scan Set-up and Hold Times
相关PDF资料
PDF描述
AD9888KSZ-170 IC ANALOG INTRFC 170MSPS 128MQFP
AD9895KBCZRL IC CCD SIGNAL PROC/GEN 64-CSPBGA
AD9910BSVZ-REEL IC DDS 1GSPS 14BIT PAR 100TQFP
AD9911BCPZ-REEL7 IC DDS 500MSPS DAC 10BIT 56LFCSP
AD9912ABCPZ IC DDS 1GSPS DAC 14BIT 64LFCSP
相关代理商/技术参数
参数描述
AD9887AKSZ-1401 制造商:AD 制造商全称:Analog Devices 功能描述:Dual Interface for Flat Panel Display
AD9887AKSZ-170 功能描述:IC INTRFACE ANALOG/DVI 160-MQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 专用 系列:- 特色产品:NXP - I2C Interface 标准包装:1 系列:- 应用:2 通道 I²C 多路复用器 接口:I²C,SM 总线 电源电压:2.3 V ~ 5.5 V 封装/外壳:16-TSSOP(0.173",4.40mm 宽) 供应商设备封装:16-TSSOP 包装:剪切带 (CT) 安装类型:表面贴装 产品目录页面:825 (CN2011-ZH PDF) 其它名称:568-1854-1
AD9887AKSZ-170 制造商:Analog Devices 功能描述:IC DUAL DISPLAY INTERFACE
AD9887AKSZ-1701 制造商:AD 制造商全称:Analog Devices 功能描述:Dual Interface for Flat Panel Display
AD9887APCB 制造商:AD 制造商全称:Analog Devices 功能描述:Dual Interface for Flat Panel Displays