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CP3UB26 Datasheet(PDF) 86 Page - National Semiconductor (TI) |
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CP3UB26 Datasheet(HTML) 86 Page - National Semiconductor (TI) |
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86 / 268 page  www.national.com 86 17.3.1 Main Control Register (MCNTRL) The MCNTRL register controls the main functions of the CR16 USB node. The MCNTRL register provides read/write access from the CPU bus. Reserved bits must be written with 0, and they return 0 when read. It is clear after reset. USBEN The USB Enable controls whether the USB module is enabled. If the USB module is dis- abled, the 48 MHz clock within the USB node is stopped, all USB registers are initialized to their reset state, and the USB transceiver forc- es SE0 on the bus to prevent the hub from de- tected the USB node. The USBEN bit is clear after reset. 0 – The USB module is disabled. 1 – The USB module is enabled. EPC0 FF FDC0h Endpoint Control 0 Register EPC1 FF FDD0h Endpoint Control 1 Register EPC2 FF FDD8h Endpoint Control 2 Register EPC3 FF FDE0h Endpoint Control 3 Register EPC4 FF FDDE8h Endpoint Control 4 Register EPC5 FF FDF0h Endpoint Control 5 Register EPC6 FF FDF8h Endpoint Control 6 Register TXS0 FF FDC4h Transmit Status 0 Register TXS1 FF FDD4h Transmit Status 1 Register TXS2 FF FDE4h Transmit Status 2 Register TXS3 FF FDF4h Transmit Status 3 Register TXC0 FF FDC6h Transmit Command 0 Register TXC1 FF FDD6 Transmit Command 1 Register TXC2 FF FDE6h Transmit Command 2 Register TXC3 FF FDF6h Transmit Command 3 Register TXD0 FF FDC2h Transmit Data 0 Register TXD1 FF FDD2h Transmit Data 1 Register TXD2 FF FDE2h Transmit Data 2 Register TXD3 FF FDF2h Transmit Data 3 Register RXS0 FF FDCCh Receive Status 0 Register RXS1 FF FDDCh Receive Status 1 Register RXS2 FF FDECh Receive Status 2 Register Table 37 USB Controller Registers Name Address Description RXS3 FF FDFCh Receive Status 3 Register RXC0 FF FDCEh Receive Command 0 Register RXC1 FF FDDEh Receive Command 1 Register RXC2 FF FDEEh Receive Command 2 Register RXC3 FF FDFEh Receive Command 3 Register RXD0 FF FDCAh Receive Data 0 Register RXD1 FF FDDAh Receive Data 2 Register RXD2 FF FDEAh Receive Data 2 Register RXD3 FF FDFAh Receive Data 3 Register 7 4 3 2 1 0 Reserved NAT Reserved USBEN Table 37 USB Controller Registers Name Address Description |
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