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BT8375EPF 参数 Datasheet PDF下载

BT8375EPF图片预览
型号: BT8375EPF
PDF下载: 下载PDF文件 查看货源
内容描述: 单芯片收发器T1 / E1和综合业务数字网( ISDN )基本速率接口 [single chip transceivers for T1/E1 and Integrated Service Digital Network (ISDN) primary rate interfaces]
分类和应用: 电信集成电路综合业务数字网
文件页数/大小: 323 页 / 1950 K
品牌: CONEXANT [ CONEXANT SYSTEMS, INC ]
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2.0 Circuit Description  
2.8 Transmitter  
Bt8370/8375/8376  
Fully Integrated T1/E1 Framer and Line Interface  
Figure 2-31. Interrupt Driven Transmit Data Link Processing  
Main Line Code  
Message  
Transmit Message  
0x00  
0x20  
0x40  
0x60  
Block 1  
Block 2  
Block 3  
Block 4  
Write Block/Byte to FIFO  
Return  
Interrupt Service Routine  
Interrupt Occurred  
Read Interrupt Status  
If  
Transmit Data  
Link Near Empty  
Interrupt  
No  
Yes  
Write Block/Byte to FIFO  
Process Other Interrupt  
Return  
If  
No  
End of  
Message  
Yes  
Write End of Message Register  
Return  
Return  
Bt8370/8375/8376 uses a hierarchical interrupt structure, with 1 top-level  
Interrupt Request register [IRR; addr 003] directing software to the lower levels.  
Of all the interrupt sources, the 2 most significant bandwidth requirements are  
signaling and data link interrupts. Each data link controller has a top-level  
interrupt status register that reports data link operations (see Data Link 1 and 2  
Interrupt Status registers [ISR2; addr 009, and ISR1; 00A]). The processor uses a  
2-step interrupt scheme for the data link: it reads the Interrupt Request register,  
then uses that register value to read the corresponding Data Link Interrupt Status  
register.  
2-58  
Conexant  
N8370DSE  
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