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CX20431-21 参数 Datasheet PDF下载

CX20431-21图片预览
型号: CX20431-21
PDF下载: 下载PDF文件 查看货源
内容描述: AccessRunner ADSL -USB调制解调器设备设置 [AccessRunner ADSL-USB Modem Device Set]
分类和应用: 调制解调器
文件页数/大小: 56 页 / 363 K
品牌: CONEXANT [ CONEXANT SYSTEMS, INC ]
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AccessRunner ADSL-USB Modem Device Set Data Sheet  
Table 3-3. CX20431 AFE Hardware Signal Definitions (Continued)  
Signal Name  
Pin  
I/O  
I/O Type  
Signal Name/Description  
NOT USED  
Receive Input Positive. Not used. Leave open.  
INP_RX  
3
4
I
I
Ia  
Ia  
Receive Input Negative. Not used. Leave open.  
No Connect. These pins are not connected to internal circuitry.  
INM_RX  
NC  
12, 20, 26, 28  
NOTES:  
I/O Types: See Table 3-15.  
Table 3-14. CX20431 AFE Input/Output Type Descriptions  
I/O Type  
Description  
Ia  
It  
Analog input  
Digital input, +5V tolerant, C = 8 pF  
IN  
It/Ot4  
Ith  
Digital input, +5V tolerant, C = 8 pF/Digital output, 4 mA, Z  
IN  
Digital input, +5V tolerant, with hysteresis, C = 8 pF  
IN  
= 80 Ω  
INT  
Itpd  
Digital input, +5V tolerant, 75k pull-down, C = 8 pF  
IN  
Itpu  
Digital input, +5V tolerant, 75k pull-up, C = 8 pF  
IN  
Itpu/Ot4  
Digital input, +5V tolerant, 75k pull-up, C = 8 pF/Digital output, 4 mA, Z  
= 80 Ω  
INT  
IN  
Oa  
Analog Output  
Otts4  
Digital output, 3-State, 4 mA, Z  
=80 Ω  
INT  
NOTES:  
1. See DC characteristics in Table 3-15 and analog electrical characteristics in Table 3-16.  
2. I/O Type corresponds to the device Pad Type. The I/O column in tables refers to signal I/O direction used in the application.  
Conexant  
100427B  
3-21  
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