VLSI VL82C201
The VL82C201 PC/AT-Compatible System Controller replaces an 82C284 Clock Controller and an 82C288 Bus Controller (both are used in '286-based systems), an 82C84A Clock Generator and Driver, two PAL16L8 devices (used for memory decode), and approximately 30 other less complex integrated circuits used as wait state logic. The device accepts a user supplied PROCCLK or generates its own using an internal clock modulation circuit. It also accepts a 14.318 MHz crystal to control the video clock and supplies reset and clock signals to the I/O slots.| Part No. | VL82C201 |
|---|---|
| Datasheet | VL82C201 Download |
| Manufacturer |  VLSI |
| Description | PC/AT-COMPATIBLE SYSTEM CONTROLLER |
| Buy | Stock & Price |
FEATURES
● Fully compatible with IBM PC/AT-type designs● Replaces 36 integrated circuits on the PC/AT-type board
● Supports 20 MHz system clock
● Device is available as "cores● for user-specific designs
● Sink 24 mA on slot driver outputs
● Designed in CMOS for low power consumption PC/AT-COMPATIBLE SYSTEM CONTROLLER
DESCRIPTION
The device is manufactured with VLSI's advanced high-performance CMOS process and is available in a JEDECstandard 84-pin plastic leaded chip carrier (PLCC) package. The VL82C201 is part of the PC/ATcompatible chip sets available from VLSI. Please refer to the Selector Guide in the front of this manual. BLOCK DIAGRAM EN~~ } --------~lof-MO-~'-L?~-~O,R .I---● PROCCLK POWESRWGROSOT D} XTAL1(1) XTAL1(2) PROCCLKIN -I 6284 62284 CLOCK GENERATION AND READY CONTROL {-~RESET -READY SYSCLK MHZ7 ~119 -ENAS ~ --8S1O} - AO●A1 READY 62288 BUS CONTROL r~-OENLO -OENHI ALE BUS CONTROL BUS RAMALE RAS CAS CPUHMLiD-lAO } COMMANDS I- -ERAMW -ROMCS r- { - l -Ol ORW -MEMR -MEMW -INT...
