Texas Instruments Extensa 660 Series Maintenance Manual page 56

Controller (206) into a single 208 QFP package.
Major features of the System Logic Controller include:
System:
Integration:
Memory Controller:
Power Management:
4-4 Theory of Operation
— Fully compatible with IBM PC/AT
— Supports PCI Bus-Master mode
— System Operation Voltage from 3V to 5.5V
— Three programmable non cacheable regions
— Flash ROM Boot block erase protection
— Supports general purpose I/O
— Hybrid Voltage
— Built-in 206
— Built-in 146818A
— Built-in Memory Controller
— Supports ROM DOS up to 64 MB by XIP, 16 MB by EMS
— Supports Shadow RAM from C0000-FFFFF
— Supports SLOW and SELF Refresh DRAM
— Supports Stagger Refresh
— On-board memory up to 48 MB
— Supports Three Memory Banks
— Supports Page Mode/Burst mode operation
— Supports 512 KB x 8, 1M x 4, 1M x 16, 2M x 8 and 4M x 4 type DRAM
— Supports 8- or 16-bit ROM configuration
— Programmable DRAM timing for each bank
— Supports up to Ten Programmable PMC Outputs
— Supports Multiple Power Saving Mode
— Full On Mode