参数资料
型号: SI3015-F-FS
厂商: Silicon Laboratories Inc
文件页数: 86/94页
文件大小: 0K
描述: IC ISOMODEM LINE-SIDE DAA 16SOIC
标准包装: 48
系列: ISOmodem®
数据格式: V.90
波特率: 2.4k
电源电压: 3.3V,5V
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
供应商设备封装: 16-SOIC N
包装: 管件
Si2400
Rev. 1.3
87
10
GPIO4
General Purpose Input/Output 4.
This pin can be either a GPIO pin (analog in, digital in, digital out) or the ALERT pin.
Default is digital in. When programmed as ALERT, this pin provides five functions.
While the modem is connected, it will normally be low, but will go high if the carrier is
lost, a wake-on ring (using the “ATZ” command) event is detected, a loss of loop cur-
rent event is detected, V.23 reversal is detected, or if an intrusion event has been
detected. The ALERT pin is sticky, and will stay high until the host clears it by writing
to the correct S register. (See register SE2[7:6].)
11
C1A
Isolation Capacitor 1A.
Connects to one side of the isolation capacitor C1.
12
GND
Ground.
Connects to the system digital ground.
13
ISOB
Bias Voltage.
This pin should be connected via the C3 capacitor.
14
GPIO3
General Purpose Input/Output 3.
This pin can be either a GPIO pin (analog in, digital in, digital out) or the ESC pin.
Default is digital in. When programmed as ESC, a positive edge on this pin will cause
the modem to go from online (connected) mode to the offline (command) mode.
15
GPIO2
General Purpose Input/Output 2.
This pin can be either a GPIO pin (analog in, digital in, digital out) or the TXD2 pin.
Default is digital in. The user can program this pin to function as TXD2 if the second-
ary serial interface is enabled. This pin is also used as the active low carrier detect pin
(CD) if enabled via the CDE bit in (S0C.7).
16
GPIO1
General Purpose Input Output 1.
This pin can be either a GPIO pin (analog in, digital in, digital out) or the RXD2 pin.
Default is digital. The user can program this pin to function as RXD2 if the secondary
serial interface is enabled. This pin can also be programmed to function as the EOFR
(end of frame receive) signal for HDLC framing.
Pin #
Pin Name
Description
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