AM8530 Datasheet PDF | Advanced Micro Devices

Advanced Micro Devices AM8530

the Am8530H and are familiar with the previous editions of this Technical Manual, you will find that some chapters are virtually unchanged. The Am8030’s functionality, however, has been omitted from this revision since a CMOS Am8030 was not developed. These enhancements improve the Am85C30’s functionality and allow it to be used more effectively in high-speed applications.

Part No.	AM8530
Datasheet	AM8530 Download
Manufacturer	Advanced Micro Devices
Description	Serial Communications Controller
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APPLICATIONS

Section in Chapter 7. Application notes covering the interfacing of the Am8530H (pre Hstep and CMOS versions only) to the 8086/80186, 68000 processors and Am7960 Data Coded Transceiver have been included. As was the case with the NMOS SCC, some points to look out for when using the Am85C30 are: s Follow the worksheet for initialization (Chapter 7). Unexplainable operations may occur if this procedure is not followed. s Watch out for the Write Recovery time violation. The specification for this (Trc) was changed on both the H-step and CMOS version. It is now referenced from falling edge to falling edge of the Read/Write pulse. Trc is spec’d at 4 PCLKs for the NMOS H-step and 3 PCLKs (best case)/3.5 PCLKs for the Am85C30. s Ensure Mode bits are not changed when writing commands. Each Mode bit affects only one function and a Command bit entry requires a rewrite of the entire register; therefore, care must be taken to insure the integrity of the Mode bits whenever a new command is issued. s Any unused input pins should be tied high.