TXB045 NEC Chip PCI to 5 USB2.0 Adapter Card for Desktop PC TXIC USB2.0 Expansion Card
Compliant with Universal Serial Bus Specification Revision 2.0 (data rates 1.5/12/480 Mbps)
Compliant with Open Host Controller Interface Specification USB Rev 1.0 a
Compliant with USB Rev 1.0 Enhanced Host Controller Interface Specification
The PCi Multifunction Device consists of two OHC! host controller cores for full/low speed signaling and one EHCl host controller core for high speed signaling.
The root hub has 5 (maximum) downstream facing ports, shared by the OHCl and EHCi host controller cores
All downstream facing ports can handle high speed (480 Mbps), full speed (12 Mbps), and low speed (1.5 Mbps) transactions
Configurable number of downstream interfaces (2 ~ 5)
32-bit 33 MHz host interface, compliant with PCI specification version 2.2
Supports PCI mobile design guide revision 1.1
Supports PCI-Bus power management interface specification version 1.1
PCI bus master bus access
System clock is generated by 30 MHz X or 48 MHz clock input
System clock frequency should be set from system software (BlOS) or EEPROM
Operation registers are directly mapped to PCI memory space, supporting all downstream facing ports. Legacy support function allows easy migration of motherboard implementations
3.3 V power supply, PCl signal pins have 5V tolerance circuit
Compatible with USB2.0, backward compatible with USB1.1