参数资料
型号: EVAL-ADUC7128QSPZ
厂商: Analog Devices Inc
文件页数: 41/92页
文件大小: 0K
描述: KIT DEV FOR ADUC7128
产品培训模块: ARM7 Applications & Tools
Intro to ARM7 Core & Microconverters
设计资源: ADUC7128 Dev System Schematic
ADUC7128 Gerber Files
标准包装: 1
系列: QuickStart™ PLUS 套件
类型: MCU
适用于相关产品: ADuC7128
所含物品: 评估板、电源、缆线、软件、仿真器和说明文档
产品目录页面: 739 (CN2011-ZH PDF)
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ADuC7128/ADuC7129
Rev. 0 | Page 46 of 92
DACEN Register
Name
Address
Default Value
Access
DACEN
0xFFFF06B8
0x00
R/W
Table 50. DACEN MMR Bit Designations
Bit
Description
7:1
Reserved.
0
Set to 1 by the user to enable DAC mode.
Set to 0 by the user to enable DDS mode.
DACDAT Register
Name
Address
Default Value
Access
DACDAT
0xFFFF06B4
0x0000
R/W
Table 51. DACDAT MMR Bit Designations
Bit
Description
15:10
Reserved.
9:0
10-bit data for DAC.
The DACDAT MMR controls the output of the DAC. The data
written to this register is a ±9-bit signed value. This means that
0x0000 represents midscale, 0x0200 represents zero scale, and
0x01FF represents full scale.
DACEN and DACDAT require key access. To write to these
MMRs, use the sequences shown in Table 52.
Table 52. DACEN and DACDAT Write Sequences
DACEN
DACDAT
DACKEY0 = 0x07
DACEN = user value
DACDAT = user value
DACKEY1 = 0xB9
DDS
The DDS is used to generate a digital sine wave signal for the
DAC on the ADuC7128/ADuC7129. It can be enabled into
a free running mode by the user.
Both the phase and frequency can be controlled.
Table 53. DDSCON MMR Bit Designations
Bit
Description
7:6
Reserved.
5
DDS Output Enable.
Set by user to enable the DDS output. This has an effect only if the DDS is selected in DACCON.
Cleared by user to disable the DDS output.
4
Reserved.
Binary Divide Control.
DIV
Scale Ratio
0000
0.000
0001
0.125
0010
0.250
0011
0.375
0100
0.500
0101
0.625
0110
0.750
0111
0.875
3:0
1xxx
1.000
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