8x931HA

ADVANCE INFORMATION 8x931AA/8x931HA UNIVERSAL SERIAL BUS PERIPHERAL CONTROLLERS s 8x931AA Hubless USB Peripheral Controller s On-chip USB Transceivers s On-chip Phase-locked loop s FIFO Data Buffers — Two Pairs of 8-byte Transmit and Receive FIFOs — One Pair of 16-byte Transmit and Receive FIFOs — Supports Isochronous and Non-isochronous Data s Automatic FIFO Management s Three USB Interrupt Vectors — Endpoint Transmit/Receive Done — Start of Frame — Global Suspend/Resume/USB Reset s Regulated 3V Output for Root Port Pullup Resistor s On-chip ROM Options — 0 or 8 Kbytes s 256 bytes On-chip Data RAM s Four Input/Output Ports s MCS® 51 UART s Three 16-bit Timer/Counters s Keyboard Control Interface s Four Dedicated LED Driver Outputs s 6- or 12-MHz Crystal Operation — Low Clock Mode (3MHz) s 8x931HA Includes all 8x931AA Features s 8x931HA USB Hub has One Internal Downstream, and Four External Downstream Ports — Universal Serial Bus Specification 1.0 Compliant — Serves as both USB Hub and USB Embedded Function (Internal Port) s USB Hub — Connectivity Management — Downstream Device Connect/Disconnect Detection — Power Management, Including Suspend and Resume — Bus Fault Detection and Recovery — Full and Low Speed Downstream Device Support s Hub Endpoint Done Interrupt s Output Pin for Port Power Switching s Input Pin for Overcurrent Detection s Hub FIFO Data Buffers — One Pair of 8-byte Transmit and Receive FIFOs — One 1-byte Transmit Register s Embedded Function FIFO Data Buffe...