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DM9621 Datasheet(PDF) 13 Page - Davicom Semiconductor, Inc. |
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DM9621 Datasheet(HTML) 13 Page - Davicom Semiconductor, Inc. |
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13 / 66 page  DM9621 USB2.0 to Fast Ethernet Controller Preliminary 13 Version: DM9621 -14-DS-P02 February 23, 2011 4. Vendor Control and Status Register Set The DM9621 implements several control and status registers, which can be accessed by the USB vendor register type commands. All CRs are set to their default values by hardware or software reset unless otherwise specified. Register Description Offset Default value after reset NCR Network Control Register 00H 00H NSR Network Status Register 01H 00H TCR TX Control Register 02H 00H RCR RX Control Register 05H 00H RSR RX Status Register 06H 00H ROCR Receive Overflow Counter Register 07H 00H BPTR Back Pressure Threshold Register 08H 37H FCTR Flow Control Threshold Register 09H 38H FCR RX Flow Control Register 0AH 00H EPCR EEPROM & PHY Control Register 0BH 00H EPAR EEPROM & PHY Address Register 0CH 40H EPDRL EEPROM & PHY Low Byte Data Register 0DH Unknown EPDRH EEPROM & PHY High Byte Data Register 0EH Unknown WCR Wake Up Control Register 0FH 00H PAR Physical Address Register 10H-15H Determined by EEPROM MAR Multicast Address Register 16H-1DH 0000000000000 080 GPCR General Purpose Control Register 1EH 01H GPR General Purpose Register 1FH Unknown VID Vendor ID 28H-29H 0A46H PID Product ID 2AH-2BH 9621H CHIPR CHIP revision 2CH 01H TSCR TX Special Control Register 2DH 00H TCSCR Transmit Check Sum Control Register 31H 00H RCSCSR Receive Check Sum Control Status Register 32H 00H GPCR2 General Purpose Control Register 2 34H 00H GPR2 General Purpose Register 2 35H 00H EEP_CTRL EEPROM and PHY Control Register 3AH 00H PPCSR Pause Packet Control Status Register 3DH 04H TX_CTR Transmit Packet Counter 81H 00H UPERR USB Packet Error Counter 82H 00H CRC_CTR Ethernet Receive Packet CRC Error Counter 83H 00H EXCOL_CTR Ethernet Transmit Excessive Collision Counter 84H 00H COL_CTR Ethernet Transmit Collision Counter 85H 00H LCOL_CTR Ethernet Transmit Late Collision Counter 86H 00H MODE_CTL Mode Control 91H 00H SQUELCH USB squelch Control 95H 04H USB_ADR USB Address 96H 00H |
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