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NET2890 Datasheet(PDF) 50 Page - List of Unclassifed Manufacturers |
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NET2890 Datasheet(HTML) 50 Page - List of Unclassifed Manufacturers |
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50 / 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 50 5.6 Indexed Registers 5.6.1 (Index 00h; LOCALCTL) Local Bus Control Bits Description Read Write Default Value 7:2 Reserved. Yes No 0 1:0 Local Clock Output. This field controls the frequency of the LCLK pin. 0 = 48 MHz clock derived from the internal oscillator 1 = 24 MHz clock derived from the internal oscillator 2 = 12 MHz clock derived from the internal oscillator 3 = stopped Yes Yes 0 5.6.2 (Index 01h; OURADDR) Our USB Address Register Bits Description Read Write Default Value 7 Reserved. Yes No 0 6:0 Our USB Address. After the local CPU has successfully completed the status phase of a SET Address request from the host, it writes the new device address into this register. This register is cleared when a root port reset is detected Yes Yes 0 Note: When a Set Address command is sent from the host, the local CPU must write the new device address into the OURADDR configuration register. 5.6.3 (Index 02h; IRQENB1) Interrupt Enable Register 1 Bits Description Read Write Default Value 7 SOF Interrupt Enable. When set, this bit enables a local interrupt to be generated when a start-of-frame packet is received by the NET2890. Yes Yes 0 6:5 Reserved Yes No 0 4 Endpoint D Interrupt Enable. When set, this bit enables a local interrupt to be set when an interrupt is active on this endpoint. Yes Yes 0 3 Endpoint C Interrupt Enable. When set, this bit enables a local interrupt to be set when an interrupt is active on this endpoint. Yes Yes 0 2 Endpoint B Interrupt Enable. When set, this bit enables a local interrupt to be set when an interrupt is active on this endpoint. Yes Yes 0 1 Endpoint A Interrupt Enable. When set, this bit enables a local interrupt to be set when an interrupt is active on this endpoint. Yes Yes 0 0 Endpoint 0 Interrupt Enable. When set, this bit enables a local interrupt to be set when an interrupt is active on this endpoint. Yes Yes 0 |
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