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AM79C981 数据表(PDF) 24 Page - Advanced Micro Devices |
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AM79C981 数据表(HTML) 24 Page - Advanced Micro Devices |
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24 / 40 page ![]() AMD PRELIMINARY 1–94 Am79C981 APPLICATIONS A fully managed multiport repeater can be easily built by interfacing the IMR+ chip with the Hardware Imple- mented Management Information Base (HIMIB), Am79C987 device. The HIMIB device interfaces with all common Microprocessor System Busses with a minimum of external logic. Note that additional buffering of DAT and JAM are required for most applications. For more information, refer to AMD’s IEEE 802.3 Repeater Technical Manual (PID# 17314A). 17306B-14 HIMIB IMR+ CRS STR SI SO SCLK CRS STR SI SO SCLK REQ DAT JAM ACK COL RST CK Address Decode CS C/ D Data Buffer RD WR RDY Host System Bus Expansion Bus D [7–0] X1 INT Figure 8. Simplified ISA-HUB Block Diagram |
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