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NET2890 数据表(PDF) 11 Page - List of Unclassifed Manufacturers |
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NET2890 数据表(HTML) 11 Page - List of Unclassifed Manufacturers |
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11 / 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 11 PKTLENLSB • Moved from Index register 5 to Base register 0Bh. PKTLENMSB • Moved from Index register 6 to Base register 0Ch. FIFOBASE • Register is obsolete. FIFOSIZE • Register is obsolete. FIFOs are all fixed sizes. FIFOCTL • Moved to Endpoint paged registers address 1Ch. • “Fifo Enable” bit, “Endpoint Select”bits are obsolete. • FIFO Valid Bit removed, moved to FIFOSTAT. FIFOINTENB • Removed. Interrupt enables moved to EPIRQENB register. FIFOSTAT • Moved to Endpoint registers address 1Eh. • “FIFO Valid” bit added, changed to Yes/SET with Auto-Clear feature. • FIFO Almost Full and Almost Empty interrupts moved to EPIRQSTAT register. FIFOCNT • Moved to Endpoint paged registers address 1Ah. EPRSPSET • “Zero-Length Packet Response” bit is obsolete. • “Endpoint Stall” and “Endpoint Toggle” bits have been swapped. See the description in Section 5, Registers. EPRSPCLR • “Zero-Length Packet Response” bit is obsolete. • “Endpoint Stall” and “Endpoint Toggle” bits have been swapped. See the description in Section 5, Registers. EPIRQENB • Bits have been re-arranged to simplify software. See Section 5, Registers. EPUSBSTAT • Transmit Register Valid, Receive Register Valid bits are obsolete. • “Timeout” status bit and Short Packet Transferred added. IRQENB2 • FIFO interrupt enables moved to EPIRQENB register. INDEX2 • Removed. MINDEX1 • Removed. MINDEX2 • Removed. DIAG • Added new index register to control diagnostic features. EPnPKTSIZE • Added new maximum packet size registers (Index 10h to 19h). FIFOETHRS • Renamed Fn_AETH. The FIFO almost empty threshold registers have been moved from the Endpoint/FIFO registers to the index registers. FIFOFTHRS • Renamed Fn_AFTH. The FIFO almost full threshold registers have been moved from the Endpoint/FIFO registers to the index registers. |
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