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73K224BL 参数 Datasheet PDF下载

73K224BL图片预览
型号: 73K224BL
PDF下载: 下载PDF文件 查看货源
内容描述: 单芯片调制解调器瓦特/集成混合 [Single-Chip Modem w/ Integrated Hybrid]
分类和应用: 调制解调器
文件页数/大小: 33 页 / 202 K
品牌: TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
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73K224BL  
V.22bis, V.22, V.21, Bell 212A, 103  
Single-Chip Modem w/ Integrated Hybrid  
DATA SHEET  
SERIAL CONTROL INTERFACE MODE  
The serial Command mode allows access to the  
73K224BL control and status registers via a serial  
control port. In this mode the AD0, AD1, and AD2 lines  
provide register addresses for data passed through the  
AD7 (DATA) pin under control of the RD and WR lines.  
A read operation is initiated when the RD line is taken  
low. The next eight cycles of EXCLK will then transfer  
out eight bits of the selected address location LSB  
first. A write takes place by shifting in eight bits of data  
LSB first for eight consecutive cycles of EXCLK. WR is  
then pulsed low and data transfer into the selected  
register occurs on the rising edge of WR.  
DTMF GENERATOR  
The DTMF generator controls the sending of the  
sixteen standard DTMF tone pairs. The tone pair sent  
is determined by selecting transmit DTMF (bit D4) and  
the 4 DTMF bits (D0-D3) of the Tone Register.  
Transmission of DTMF tones from TXA is gated by the  
transmit enable bit of CR0 (bit D1) as with all other  
analog signals.  
Page: 4 of 33  
© 2005, 2008 TERIDIAN Semiconductor Corporation  
Rev 7.1