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NET2890 数据表(PDF) 53 Page - List of Unclassifed Manufacturers |
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NET2890 数据表(HTML) 53 Page - List of Unclassifed Manufacturers |
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53 / 73 page ![]() Specification NET2890 USB Interface Controller ____________________________________________________________________________________ NetChip Technology, Inc., 1999 335 Pioneer Way, Mountain View, California 94041 TEL (650) 526-1490 FAX (650) 526-1494 http://www.netchip.com Rev 2.0, Draft 9, July 16, 1999 53 5.6.12 (Index 15h; EPBPKTSIZMSB) EPB Max Packet Size (MSB) Bits Description Read Write Default Value 7:2 Reserved Yes No 0 1:0 EPB Max Packet Size MSB. This field provides the most significant bits of the Endpoint B Maximum Packet Size. Yes Yes 0 5.6.13 (Index 16h; EPCPKTSIZLSB) EPC Max Packet Size (LSB) Bits Description Read Write Default Value 7:0 EPC Max Packet Size LSB. This field provides the least significant bits of the Endpoint C Maximum Packet Size. Yes Yes 64 5.6.14 (Index 17h; EPCPKTSIZMSB) EPC Max Packet Size (MSB) Bits Description Read Write Default Value 7:2 Reserved Yes No 0 1:0 EPC Max Packet Size MSB. This field provides the most significant bits of the Endpoint C Maximum Packet Size. Yes Yes 0 5.6.15 (Index 18h; EPDPKTSIZLSB) EPD Max Packet Size (LSB) Bits Description Read Write Default Value 7:0 EPD Max Packet Size LSB. This field provides the least significant bits of the Endpoint D Maximum Packet Size. Yes Yes 64 5.6.16 (Index 19h; EPDPKTSIZMSB) EPD Max Packet Size (MSB) Bits Description Read Write Default Value 7:2 Reserved Yes No 0 1:0 EPD Max Packet Size MSB. This field provides the most significant bits of the Endpoint D Maximum Packet Size. Yes Yes 0 5.6.17 (Index 20h; F0_AETH) FIFO 0 Almost Empty Threshold Register Bits Description Read Write Default Value 7:5 Reserved Yes No 0 4:0 FIFO Almost Empty Threshold. This register determines the threshold at which the FIFO almost empty status bit is set. The threshold is in terms of bytes. For Endpoint 0, this value can range from 0 to 16. Yes Yes 0 |
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