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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 3-1. P5200 UIC Hardware Signal Definitions (Continued)  
Label  
Pin  
I/O  
I/O Type  
Signal Name/Description  
NOT USED  
Not Used. Connect to GND through 1 K.  
HC10  
94  
I
It  
Address Lines 20-10. If Flash ROM is installed, connect to Flash  
HAD[29:19]  
40-46, 49-52  
O
Ot4  
ROM A[20:10], respectively. If Flash ROM is not installed, leave open.  
Flash ROM Chip Enable. Active low output enables optional Flash  
ROM when asserted. If Flash ROM is installed, connect to Flash ROM  
CE#. If Flash ROM is not installed, leave open.  
HC00 (GPIO32)  
93  
O
O
Ot4  
Flash ROM Reset. Active low output resets optional Flash ROM  
when asserted. If Flash ROM is installed, connect to Flash ROM  
RESET#. If Flash ROM is not installed, leave open.  
FLASH_RST#  
(GPIO23)  
97  
Ot4  
Not Used. Leave open.  
HC11 (GPIO33)  
HAD31 (GPIO37)  
TREQA  
90  
I/O  
I/O  
I
It/Ot4  
Not Used. Leave open.  
69  
It/Ot4  
Reserved. This pin is connected to internal circuitry. Leave open.  
Reserved. This pin is connected to internal circuitry. Leave open.  
Reserved. This pin is connected to internal circuitry. Leave open.  
Reserved. This pin is connected to internal circuitry. Leave open.  
Reserved. These pins are connected to internal circuitry. Leave open.  
36  
Itpd  
Reserved (GPIO06)  
Reserved (GPIO17)  
Reserved (GPIO25)  
157  
I/O  
I/O  
I/O  
Itpu/Ot4  
Itpu/Ot4  
Itpu/Ot4  
175  
68  
Reserved  
13-15, 18-20, 24  
NOTES:  
I/O Types: See Table 3-2.  
Table 3-2. P5200 UIC Input/Output Type Descriptions  
I/O Type  
Description  
It  
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  
Otts4  
Digital input, +5V tolerant, 75k pull-up, C = 8 pF/Digital output, 4 mA, Z  
IN  
= 80 Ω  
INT  
Digital output, 3-State, 4 mA, Z  
=80 Ω  
INT  
Input, USB receiver/Output, USB driver  
Iu/Ou  
NOTES:  
1. See DC characteristics in Table 3-3.  
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  
3-7  
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