參數(shù)資料
型號： AD6620PCB
廠商： Analog Devices, Inc.
英文描述： 65 MSPS Digital Receive Signal Processor
中文描述： 65 MSPS的數(shù)字接收信號處理器
文件頁數(shù)： 31/43頁
文件大小： 354K
代理商： AD6620PCB
AD6620
–31–
REV. 0
Read Pseudocode
int read_micro(ext_address);
main();
{
/* This code shows the reading of the NCO frequency register
using the read_micro function as defined above. The variable
address is the External Address A[2 . . 0].
Internal Address = 0x303
*/
// holding registers for NCO byte wide access data
int d3, d2, d1, d0;
// NCO frequency word (32 bits wide)
// write AMR
write_micro(7, 0x03 );
// write LAR
write_micro(6, 0x03);
/* read D[7:0] from DR0, All data is moved from the Internal
Registers to the interface registers on this access */
d0 = read_micro(0) & 0xFF;
// read D[15:8] from DR1
d1 = read_micro(1) & 0xFF;
// read D[23:16] from DR2
d2 = read_micro(2) & 0xFF;
// read D[31:24] from DR3
d3 = read_micro(3) & 0xFF;
// DR4 is not needed because NCO_FREQ is only 32 bits
// Assemble 32-bit NCO_FREQ word from the 4-byte
components
NCO_FREQ = d0 + (d1 << 8) + (d2 << 16) + (d3 << 24);
} // end of main
Auto Increment Feature
To increase throughput, an auto increment feature is provided.
This feature is controlled by Bits 6 and 7 of the AMR. If these
bits are set to 00, the address remains the same after an internal
access. If set to 01, the address is incremented after a read ac-
cess has been performed. If set to 10, the address is incremented
after a write access is performed. If set to 11, the address is incre-
mented after each access, read or write. This allows the AD6620
to be initialized in a much shorter time since the access to the
LAR and AMR must occur only once to initialize or read-back
the entire device.
MICROPORT CONTROL
External reads and writes are accomplished in one of two modes
via the Microprocessor Port. The
CS
,
RD
(
DS
), RDY
(
DTACK
),
WR
(R/W) and MODE pins are used to control the
access. The specific function of these pins depends on whether
the access is MODE 0 or MODE 1. The Mode 1 signal names
are those listed on the pinout. The access mode is controlled by
the MODE input as described in the following sections.
Table IX. Microprocessor Control Signals
MODE 0
MODE 1
A[2:0] (Address Lines)
D[7:0] (Data Lines)
CS
(Chip Select)
RD
(Read Strobe)
WR
(Write Strobe)
RDY (Ready Signal)
MODE (Mode Select)
A[2:0] (Address Lines)
D[7:0] (Data Lines)
CS
(Chip Select)
DS
(Data Strobe)
R/W (Read/Write Select)
DTACK
(Data Acknowledge)
MODE (Mode Select)
The Microport is synchronous with the master clock (CLK) of
the AD6620, but the interface isn’t required to be. If the speed
of the interface is significantly slower than CLK, synchronicity
should be no issue. If the interface is relatively fast compared to
CLK, the user may need to synchronize the Microport to CLK.
The timing diagrams show the relationship of the control signals
to clock and the user should use these as a guide to implement a
Microport interface.
相關(guān)PDF資料
PDF描述
AD6620AS 65 MSPS Digital Receive Signal Processor
AD6620S 65 MSPS Digital Receive Signal Processor
AD6620 65 MSPS Digital Receive Signal Processor(采樣速率65MSPS的數(shù)字接收信號處理器)
AD6622AS Four-Channel, 75 MSPS Digital Transmit Signal Processor TSP
AD6622PCB Four-Channel, 75 MSPS Digital Transmit Signal Processor TSP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD6620S 制造商:AD 制造商全稱:Analog Devices 功能描述:65 MSPS Digital Receive Signal Processor
AD6620S/PCB 制造商:Analog Devices 功能描述:DUAL CHANNEL DECIMATING RECEIV 制造商:Analog Devices 功能描述:SGNL PROCESSOR 169CSPBGA - Bulk
AD6622 制造商:AD 制造商全稱:Analog Devices 功能描述:Four-Channel, 75 MSPS Digital Transmit Signal Processor TSP
AD6622AS 制造商:Analog Devices 功能描述:Transmit Signal Processor 128-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:4 CHANNEL 65 MSPS DIGITAL UPCONVERTER - Bulk
AD6622PCB 制造商:AD 制造商全稱:Analog Devices 功能描述:Four-Channel, 75 MSPS Digital Transmit Signal Processor TSP
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*