欢迎访问ic37.com |
会员登录 免费注册
发布采购

MX839 参数 Datasheet PDF下载

MX839图片预览
型号: MX839
PDF下载: 下载PDF文件 查看货源
内容描述: 数字控制的模拟I / O处理器 [Digitally Controlled Analog I/O Processor]
分类和应用:
文件页数/大小: 20 页 / 169 K
品牌: CMLMICRO [ CML MICROCIRCUITS ]
 浏览型号MX839的Datasheet PDF文件第7页浏览型号MX839的Datasheet PDF文件第8页浏览型号MX839的Datasheet PDF文件第9页浏览型号MX839的Datasheet PDF文件第10页浏览型号MX839的Datasheet PDF文件第12页浏览型号MX839的Datasheet PDF文件第13页浏览型号MX839的Datasheet PDF文件第14页浏览型号MX839的Datasheet PDF文件第15页  
Digitally Controlled Analog I/O Processor  
11  
MX839 PRELIMINARY INFORMATION  
4.7.3 VARIABLE ATTENUATOR Register (Hex address $D2)  
This is a 16-bit register. Byte (1) is sent first. Bits 0 - 5 of the first byte in this register are used to enable and set the  
attenuation of the Modulator 1 amplifier. Bits 0 - 5 of the second byte in this register are used to enable and set the  
attenuation of the Modulator 2 amplifier. See Table 7.  
5
0
4
3
2
1
0
Mod. 1 Attenuation  
5
0
4
3
2
1
0
Mod. 2 Attenuation  
X
X
X
X
X
Disabled (VBIAS  
)
X
X
X
X
X
Disabled (VBIAS  
)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
>40dB  
12.0dB  
11.6dB  
11.2dB  
10.8dB  
10.4dB  
10.0dB  
9.6dB  
9.2dB  
8.8dB  
8.4dB  
8.0dB  
7.6dB  
7.2dB  
6.8dB  
6.4dB  
6.0dB  
5.6dB  
5.2dB  
4.8dB  
4.4dB  
4.0dB  
3.6dB  
3.2dB  
2.8dB  
2.4dB  
2.0dB  
1.6dB  
1.2dB  
0.8dB  
0.4dB  
0dB  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
>40dB  
6.0dB  
5.8dB  
5.6dB  
5.4dB  
5.2dB  
5.0dB  
4.8dB  
4.6dB  
4.4dB  
4.2dB  
4.0dB  
3.8dB  
3.6dB  
3.4dB  
3.2dB  
3.0dB  
2.8dB  
2.6dB  
2.4dB  
2.2dB  
2.0dB  
1.8dB  
1.6dB  
1.4dB  
1.2dB  
1.0dB  
0.8dB  
0.6dB  
0.4dB  
0.2dB  
0dB  
X = don't care  
MOD1 ENABLE  
(Bit 5, first byte)  
When this bit is '1' the MOD1 attenuator is enabled.  
When this bit is '0' the MOD1 attenuator is disabled (i.e. powersaved).  
MOD2 ENABLE  
(Bit 5, second byte)  
When this bit is '1' the MOD2 attenuator is enabled.  
When this bit is '0' the MOD2 attenuator is disabled (i.e. powersaved).  
Reserved for future use. These should be set to '0'.  
(Bits 7 and 6, first  
and second bytes)  
Table 7: VARIABLE ATTENUATOR Register (Hex address $D2)  
© 1998 MXxCOM Inc.  
www.mxcom.com Tele: 800 638-5577 336 744-5050 Fax: 336 744-5054  
Doc. # 20480164.002  
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA  
All trademarks and service marks are held by their respective companies.