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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 3-20. CX20441 LD Hardware Signal Definitions  
Signal Name  
Pin  
I/O  
I/O Type  
Signal Name/Description  
P5200 UIC INTERFACE  
Power Down. Active low power down control input. Connect to UIC  
PWRDWN#  
5
I
It  
AFE_RST#  
CX20431 AFE INTERFACE  
Input Driver Positive. Transmit driver input positive from the AFE.  
Connect to AFE OUTP_TX through 1 µF.  
INP_DRV  
INM_DRV  
23  
2
I
I
Ia  
Input Driver Negative. Transmit driver input negative input from the  
AFE. Connect to AFE OUTM_TX through 1 µF.  
Ia  
HYBRID INTERFACE  
Output Driver Positive. Transmit driver output positive to the hybrid  
circuit. I = 280 mA.  
OUTP_DRV  
OUTM_DRV  
18  
7
O
O
Oa  
Oa  
max  
Output Driver Negative Transmit driver output negative to the hybrid  
circuit. I = 280 mA.  
max  
MISCELLANEOUS  
Bias. Current setting external resistor. Connect to GND through  
124 kresistor (+1%).  
RBIAS  
4
REF  
REF  
POWER AND GROUND  
Analog Power. Connect to +5V through filter.  
Analog Ground. Connect to GND.  
AVDD  
AVSS  
6, 19  
8, 17  
PWR  
GND  
PWR  
GND  
NO CONNECT  
No Connect. These pins are not connected to internal circuitry.  
NC  
1, 3, 9-16, 20-22,  
24-32  
NOTES:  
I/O Types: See Table 3-21.  
Table 3-21. CX20441 LD Input/Output Type Descriptions  
I/O Type  
Description  
It  
Digital input, +5V tolerant, C = 8 pF  
IN  
Ia  
Analog input  
Oa  
Analog output  
NOTES:  
1. See analog electrical characteristics in Table 3-22.  
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.  
3-26  
Conexant  
100427B  
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