參數(shù)資料
型號(hào)： AD9958/PCBZ
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 27/44頁(yè)
文件大?。?/td> 0K
描述： BOARD EVALUATION FOR AD9958
產(chǎn)品培訓(xùn)模塊： Direct Digital Synthesis Tutorial Series (1 of 7): Introduction
Direct Digital Synthesizer Tutorial Series (7 of 7): DDS in Action
Direct Digital Synthesis Tutorial Series (3 of 7): Angle to Amplitude Converter
Direct Digital Synthesis Tutorial Series (6 of 7): SINC Envelope Correction
Direct Digital Synthesis Tutorial Series (4 of 7): Digital-to-Analog Converter
Direct Digital Synthesis Tutorial Series (2 of 7): The Accumulator
設(shè)計(jì)資源： Low Jitter Sampling Clock Generator for High Performance ADCs Using AD9958/9858 and AD9515 (CN0109)
Phase Coherent FSK Modulator (CN0186)
AD9958/59 Eval Brd Schematics
AD9958/59 Eval Brd Gerber Files
AD9958 Eval Brd BOM
標(biāo)準(zhǔn)包裝： 1
系列： AgileRF™
主要目的： 計(jì)時(shí)，直接數(shù)字合成（DDS）
嵌入式： 否
已用 IC / 零件： AD9958
主要屬性： 10 位數(shù)模轉(zhuǎn)換器，32 位調(diào)節(jié)字寬
次要屬性： 500MHz 2 通道圖形用戶界面
已供物品： 板，線纜，軟件
產(chǎn)品目錄頁(yè)面： 552 (CN2011-ZH PDF)
相關(guān)產(chǎn)品： AD9958BCPZ-REEL7-ND - IC DDS DUAL 10BIT DAC 56LFCSP
AD9958BCPZ-ND - IC DDS DUAL 500MSPS DAC 56LFCSP
Data Sheet
AD9958
Rev. B | Page 33 of 44
SERIAL I/O MODES OF OPERATION
The following are the four programmable modes of serial I/O
port operation:
Single-bit serial 2-wire mode (default mode)
Single-bit serial 3-wire mode
2-bit serial mode
4-bit serial mode (SYNC_I/O not available)
Table 26 displays the function of all six serial I/O interface pins,
depending on the mode of serial I/O operation programmed.
Table 26. Serial I/O Port Pin Function vs. Serial I/O Mode
Pin
Single-Bit
Serial 2-Wire
Mode
Single-Bit
Serial 3-Wire
Mode
2-Bit
Serial
Mode
4-Bit
Serial
Mode
SCLK
Serial clock
Serial
clock
CS
Chip select
Chip
select
SDIO_0
Serial data I/O
Serial data in
Serial data
I/O
Serial
data I/O
SDIO_1
Not used for
SDIO1
Not used for
SDIO1
Serial data
I/O
Serial
data I/O
SDIO_2
Not used for
SDIO1
Serial data
out (SDO)
Not used
for SDIO1
Serial
data I/O
SDIO_3
SYNC_I/O
Serial
data I/O
1
In serial mode, these pins (SDIO_0/SDIO_1/SDIO_2/SDIO_3) can be used for
RU/RD operation
.
The two bits in the channel select register, CSR[2:1], set the
serial I/O mode of operation and are defined in Table 27.
Table 27. Serial I/O Mode of Operation
Serial I/O Mode Select
(CSR[2:1])
Mode of Operation
00
Single-bit serial mode (2-wire mode)
01
Single-bit serial mode (3-wire mode)
10
2-bit serial mode
11
4-bit serial mode
Single-Bit Serial (2-Wire and 3-Wire) Modes
The single-bit serial mode interface allows read/write access to
all registers that configure the AD9958. MSB first or LSB first
transfer formats are supported. In addition, the single-bit serial
mode interface port can be configured either as a single pin I/O,
which allows a 2-wire interface, or as two unidirectional pins
for input/output, which enable a 3-wire interface. Single-bit
mode allows the use of the SYNC_I/O function.
In single-bit serial mode, 2-wire interface operation, the
SDIO_0 pin is the single serial data I/O pin. In single-bit serial
mode 3-wire interface operation, the SDIO_0 pin is the serial
data input pin and the SDIO_2 pin is the output data pin.
Regardless of the number of wires used in the interface, the
SDIO_3 pin is configured as an input and operates as the
SYNC_I/O pin in the single-bit serial mode and 2-bit serial
mode. The SDIO_1 pin is unused in this mode (see Table 26).
2-Bit Serial Mode
The SPI port operation in 2-bit serial mode is identical to the
SPI port operation in single-bit serial mode, except that two bits
of data are registered on each rising edge of SCLK. Therefore, it
only takes four clock cycles to transfer eight bits of information.
The SDIO_0 pin contains the even numbered data bits using
the notation D[7:0], and the SDIO_1 pin contains the odd
numbered data bits. This even and odd numbered pin/data
alignment is valid in both MSB and LSB first formats (see
4-Bit Serial Mode
The SPI port in 4-bit serial mode is identical to the SPI port in
single-bit serial mode, except that four bits of data are registered
on each rising edge of SCLK. Therefore, it takes only two clock
cycles to transfer eight bits of information. The SDIO_0 and
SDIO_2 pins contain even numbered data bits using the notation
D[7:0], and the SDIO_0 pin contains the LSB of the nibble. The
SDIO_1 and SDIO_3 pins contain the odd numbered data bits,
and the SDIO_1 pin contains the LSB of the nibble to be accessed.
Note that when programming the device for 4-bit serial mode,
it is important to keep the SDIO_3 pin at Logic 0 until the device is
programmed out of the single-bit serial mode. Failure to do so
can result in the serial I/O port controller being out of
sequence.
Figure 43 through Figure 45 represent write timing diagrams
for each of the serial I/O modes available. Both MSB and LSB
first modes are shown. LSB first bits are shown in parentheses.
The clock stall low/high feature shown is not required. It is used
to show that data (SDIO) must have the proper setup time
relative to the rising edge of SCLK.
Figure 46 through Figure 49 represent read timing diagrams for
each of the serial I/O modes available. Both MSB and LSB first
modes are shown. LSB first bits are shown in parentheses. The
clock stall low/high feature shown is not required. It is used to
show that data (SDIO) must have the proper setup time relative
to the rising edge of SCLK for the instruction byte and the read
data that follows the falling edge of SCLK.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD9959 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:4 Channel 500MSPS DDS with 10-bit DACs
AD9959/PCBZ 功能描述:BOARD EVALUATION FOR AD9959 RoHS:是 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估演示板和套件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:PSoC® 主要目的:電源管理，熱管理 嵌入式:- 已用 IC / 零件:- 主要屬性:- 次要屬性:- 已供物品:板，CD，電源
AD9959/PCBZ 制造商:Analog Devices 功能描述:AD9959, DDS, DAC, GUI, USB, EVALUATION B
AD9959/PCBZ1 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:4-Channel, 500 MSPS DDS with 10-Bit DACs
AD9959_08 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:4-Channel, 500 MSPS DDS with 10-Bit DACs
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