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**82C710   Universal Peripheral Controller                     c:Aug90
***Info:
The  82C710 Universal  Peripheral Controller  (UPC) is  a single  chip
controller offering  the complete I/P  solution for the PC-XT  & PC-AT
environments.  The chip is an  LSI implementation of the most commonly
used peripheral devices found  in an IBM PC, XT or  AT. It features 24
mA drivers  for the output  buffers, including  the host data  bus and
parallel port data bus. it incorporates one 16450 compatible UART, one
enhanced  parallel  port  (with  bi-directional  capability),  an  IDE
compatible  hard disk  interface, a  uPD72065B compatible  floppy disk
controller, PS/2 type mouse logic, and various chip selects.  Decoding
logic and support  for main, auxiliary and standby  power supplies and
software configurable  base addresses  for these  devices, operational
modes and  interrupts are also  included. Power management  aspects of
the 82C710  includes modular  power down for  each port,  and software
oscillator disable. The hardware power  management is done through the
PWRGD pin. When the chip is powered down (i.e. when PWRGD is inactive)
the  current drawn  is less  than 250  microAmps, all  the inputs  are
disabled,  and all  outputs are  tristated.  The  contents of  all the
registers are  preserved, as  long as  power supply  to the  82C710 is
maintained.

The host interface  is a PC compatible, (i.e.  D0-D7, A0,A9, IOR, IOW,
AEN,  MINTR, FINTR,  PINTR, SINTR,  and RESET),  and can  be connected
directly  to the  bus. The  data buffers  (D0-D7, PD0-PD7,  IDED7) are
capable of sinking 24 mA @ 0.5V, the parallel port control signals are
open collector with internal pull up, and are capable of sinking 24 mA
@ 0.5V.

The  UART implements  a  fully functional  serial link.   Programmable
character length, parity generation and detection, stop-bit generation
and baud  rate generation  are provided. Double  buffering is  used so
that  precise synchronization is  unnecessary.  Status  information is
accessible to  the CPU by  reading internal registers.   MODEM control
lines  are  provided, as  are  internal  diagnostic functionality  and
interrupt prioritization. Support for  an auxiliary power system (such
as that derived from a telephone  line or R8232 link) permits a UPC in
a battery-powered device to consume no battery power until an incoming
character is detected.

The  parallel  port  can   be  configured  for  output  only  (printer
application) or input and  output (scanner application). The necessary
control  signals  are  provided  for use  as  a  Centronics-compatible
(output  only)  parallel  port.   For scanner  applications,  a  Cent-
ronics-like interface is  used.  Such an interface is  utilized by the
RICOH 1830 scanner.

The  configuration   RAM  and  circuitry   support  programmable  base
addresses for all registers internal to the UPC. This permits creation
of  a  menu-driven program  for  system  configuration.  Selection  of
sources for interrupts, enabling and configuring of on-chip subsystems
(UARTs, parallel port, etc.)  and control of the configuration process
itself are  also handled with  this RAM and its  associated circuitry.
The remainder of  this data sheet will consider  each of the aforesaid
subsystems individually.  Sections containing more general design data
for  the chip as  a whole  are at  the end  along with  electrical and
physical characteristics.

***Versions:...
***Features:...
**82C711   Universal Peripheral Controller II                  c:Jan91...
**82C712   Universal Peripheral Controller II                  c:Jan91...
**82C721   Universal Peripheral Controller III                 c:May93...
**82C735   I/O Peripheral Controller With Printgine            c:Jul93...
**82C835   Single CHIP 386sx AT Cache Controller               c:Apr91...
**F87000   Multi-Mode Peripheral Chip                         11/23/93...
**Other:...
**Disk:...
**Video:...
*Contaq  . . . . . [no datasheets, some info]...
*Efar Microsystems [no datasheets, some info]...
*ETEQ...
*Faraday...
*Forex . . . . . . [List only, no datasheets found]...
*Intel...
**?????  (Profusion)    c:99
Chips:         
Memory Access Controller (MAC)  
Data Interface Buffer (DIB)
CPUs:          8x P-III Xeon Oct
DRAM Types:    SDRAM PC100 2-way Interleave dual channel
Max Mem:       32GB
ECC/Parity:    ECC
AGP speed:     N/A
Bus Speed:     100
PCI Clock/Bus: 1/3 PCI-66/64



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**82C571/572     486/Pentium                                      c:93
***Notes:...
***Info:...
***Configurations:...
***Features:...
**82C576/7/8     Viper Xpress  [no datasheet]                        ?...
**82C576/8/9     Viper XPress+ [no datasheet, some info]     <01/16/97...
**82C596/597     PTMAWB Pentium Adaptive Write-back (Cobra)       c:93...
**82C650/1/2     Discovery (Pentium Pro) [no datasheet]              ?...
**82C681/2/6/7   386/486WB EISA                                   c:92...
**82C683         386/486AWB EISA [no datasheet]                      ?...
**82C693/6/7     Pentium uP Write Back Cache EISA                 c:93...
**82C700         FireStar                                         c:97...
**82C701         FireStar Plus                                    c:97...
**82C750         Vendetta      [no datasheet]                        ?...
**82c801         SCWB2 DX Single Chip Solution                    c:92...
**82C802         SCWB2 PC/AT Single Chip [no datasheet]              ?...
**82C802G/GP     System/Power Management Controller (cached)      c:93...
**82C895         System/Power Management Controller (cached)   c:Sep94...
**82C898         System/Power Management Controller (non-cache)c:Nov94...
**
**Support Chips:
**82C601/2       Buffer Devices                                 <Nov94...
**82C822         PCIB (VLB-to-PCI bridge)                         c:94...
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