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**440 series:
***440FX (Natoma) 05/06/96...
***440LX (Balboa) 08/27/97...
***440BX (Seattle) c:Apr'98...
***440DX (?) c:?...
***440EX (?) c:Apr'98...
***440GX (Marlinespike) 06/29/98...
***440ZX & 440ZX-66 (?) 01/04/99...
***440ZX-M (?) 05/17/99...
***440MX (Banister) 05/17/99...
**450NX (?) 06/29/98:...
**????? (Profusion) c:99...
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*Western Digital...
**WD76C20x Floppy, RTC, IDE and Support Logic Device <11/25/91
***Info:...
***Versions:...
***Features:
o 84-pin PLCC and PQFP packages
o 5V supply requirement (WD76C20)
3.3V supply requirement (WD76C20LV)
o 3.0V battery backup supply for the RTC and 114 byte SRAM (WD76C20)
2.4V battery backup supply for the RTC and 114 byte SRAM
(WD76C20LV)
o Implemented in a low-power, high-performance, 1.25 micron CMOS
technology process
o Floppy Disk Controller (FDC) software transparent power-down mode
with low standby ICC current. FOC features:
- 256 tracks support
- 100% software compatible with NEC 765A
- Integrated high-performance DPLL data separator:
- 125, 250, 300, 500 Kb/sec and 1 Mb/sec data rates
- Option to select 150 Kb/sec FM and 300 Kb/sec MFM data
rates only
- Automatic Write Precompensation:
- Defeat option
- Inner track value of 125 or 187 ns pin selectable
- On chip clock generation:
- 2 TTL clock inputs, or
- Single 16 or 32 MHz crystal circuit and one TTL clock input
- Power Qualified Reset
- Enable PQR in W076C20
- Disable PQR in W076C20LV
- Host interface read/write accesses compatible with 80286
microprocessors at speeds up to 12 MHz with 0 wait states
- Direct floppy disk drive interface - no buffers needed
- 48 mA sink output drivers
- Schmitt Trigger input line receivers
- FDC direct PC XT/AT interface compatibility
- Floppy Control and Operations Registers on chip
- In PC/AT mode, provides required signal qualification to DMA
channel
- IBM BIOS compatible
- Dual-speed spindle drive support
- PS/2 type drive support
o Real Time Clock (RTC) features:
- Software compatible with Motorola MC146818A.
- Internal time base and oscillator circuitry
- Counts seconds, minutes, and hours
- Counts days of the week, date, month, and year
- Time base input for 32.768 KHz square wave
- Time base oscillator for parallel resonant crystals
- Binary or BCD representation of time, calendar, and alarm
- 12- or 24-hour clock with AM and PM in 12-hour mode
- Daylight savings time option
- Automatic leap year compensation
- Interfaced with software as 128 RAM locations
- 114 bytes at general purpose RAM
- Status bit indicates data integrity
- Bus compatible interrupt signals (IRQ)
- Three interrupts are separately software maskable and testable:
- Time-at-day alarm - once-per-second to once-per-day
- Periodic interrupt rates tram 122 us to 500 ms
- End-at-clock update cycle
**WD76C30x Perip. Ctrl, Interrupt Multiplex, and Clock Gen <11/18/91...
**WD7615 Desktop Buffer Manager <04/15/92...
**WD7625 Desktop Buffer Manager <10/01/92...
**WD8120LV Super I/O [no datasheet] ?
**Other Chips:
SYSTEMS LOGIC/PERIPHERAL DEVICES
WD16C451, WD16C551 - Enhanced Asynchronous Communications Element (ACE) with Parallel Port
WD16C452, WD16C552 - Dual Enhanced Asynchronous Communications Element (ACE)
WD16C550 Enhanced Asynchronous Communications Element (ACE) with FIFOs
WD76C10AlLP/LV ISA-Based System Controller for 80386SX and 80286 Desktop and Portable Compatibles
WD76C20/LV Floppy Disk Controller, Real Time Clock, IDE Interface, and Support Logic Device
WD76C30/LV Peripheral Controller, Interrupt Multiplexer, and Clock Generator Device
WD7710/LP ISA-Based System Controller with Cache for 80386SX and 80286 Desktop and Portable Compatibles
WD7910/LP ISA-Based System Controller with Cache for 80386SX and 80286 Desktop and Portable Compatibles
IMAGING DEVICES
ICS90C61A Dual Video/Memory Clock Generator
ICS90C63 Dual Video/Memory Clock Generator
ICS90C64 Dual Video/Memory Clock Generator
WD90C00 VGA Controller (8514/A clone, max 1MB, 1024x768x16, 800x600x256)
WD90C01 8514/A for laptops
WD90C10 VGA, 256KB
WD90C11, WD90C11A Enhanced VGA Controller (max 512KB, 1024x768x16, 800x600x256)
WD90C20, WD90C20A VGA Flat Panel Display Controller (800x600x16, 640x460x256, 32 shades gray)
WD90C22 VGA Flat Panel Display Controller (800x600x16, 640x460x256, 64 shades gray)
WD90C24/A/A2 SVGA, max 1MB, 1280x1024x16, 1024x768x16, LCD, VESA-LB, 3.3 or 5V
WD90C26 VGA Flat Panel Display Controller
WD90C30 High Performance Video Controller (max 1MB, 1024x768x256, 1024x768x16)
WD90C31 Accelerator Video Controller (max 1MB, 1024x768x256, 1280x1024x16)
WD90C33 Same as WD90C31 but with, max 2MB, VESA-LB, 1280x1024x256, 1280x1024x16)
WD90C55 VGA LCD Interface
WD90C56 VLBI (Video Local Bus Interface), for WD90C30/31, VESA not mentioned.
WD9710 Pipelined, 32bit core, 64bit RAM, 24bit RAMDAC, PCI/VLB
WD9712 similar to WD9710
STORAGE DEVICES
WD10C01A Winchester Disk Controller
WD10C27 Data Separator
WD33C92A Enhanced SCSI Bus Interface Controller
WD33C93B Enhanced SCSI Bus Interface Controller
WD33C95A, WD33C96A Enhanced Single-ended and Differential SCSI Bus Interface Controller
WD37C65C Floppy Disk Subsystem Controller Device
WD42C22C Winchester Disk Subsystem Controller Device
WD60C318 Optical Disk Drive Encoder/Decoder
WD60C40A Peripheral Cache Manager Device
WD60C80 Error Detection and Correction Chip (EDAC)
WD61C23A High Performance Hard Disk Controller
WD61C40A Peripheral Cache Manager Device
WD7000 ESDI Controller (16-bit ISA)
WD7193 Fast SCSI-II PCI adapter, 33C296A-ZX chip
WD7197 Fast Wide version of WD7193
WD7296A Fast Wide SCSI-II (PCI?), possibly WD34C296 chip
*Winbond...
*ZyMOS...
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