Toshiba Tecra 710CDT User manual

710CDT/720CDT

1-1

1.1 Features

The Toshiba 710CDT/720CDT uses extensive Large Scale Integration (LSI) and Complemen-

tary Metal-Oxide Semiconductor (CMOS) technology to provide minimum size and weight,

low power usage and a high degree of reliability. The computer is fully optimized for Win-

dows®95 and supports plug and play technology. The computer incorporates the following

features and benefits:

❑Microprocessor

This computer uses an Intel®Pentium®133 MHz processor with Voltage Reduction

Technology (VRT) operating at 2.9/3.3 volts.

❑Cachememory

The CPU contains a 16 KB cache and a 256 KB level-2 cache with pipe-line burst

SRAM.

❑Disk storage

This computer has a 1.2 billion byte (1.13 GB) removable HDD pack.

❑Selectable Bay

The Selectable Bay allows connection to either a Floppy Disk Drive (FDD) or a CD-

ROM drive.

The FDD supports 3.5-inch 2HD (1.44 MB) disks and 2DD (720 KB) disks. The FDD

drive can be connected to an external FDD port with an attachment when the CD-ROM

drive is installed in the Selectable Bay.

A full-size, six-speed CD-ROM drive contains an AT Attachment Packet Interface

(ATAPI) controller, and supports the following formats: Red-Book, Yellow-Book,

CD-ROM XA, Photo CD, CD-Bridge, CD-I, and CD Plus.

❑Memory

This computer comes standard with 16 MB of Extend Data Out (EDO) DRAM. This

includes 640 KB of conventional memory and 15488 KB of extended memory.

❑Display

The 710CDT has a 12.1-inch, Thin Film Transistor (TFT) color LCD displaying 800 x

600 pixels.

1-2

710CDT/720CDT

The 720CDT has a 12.1-inch TFT color LCD displaying 1024 x 768 pixels. The built-

in display controller supports full color capability up to 1280 x 1024 resolution on an

externalmonitor.

❑Keyboard

An-easy-to-use 82/84-key keyboard includes a numeric keypad overlay for fast nu-

meric data entry or for cursor and page control. The keyboard supports software that

uses a 101-key or 102-key enhanced keyboard.

❑Batteries

Three different batteries are used in this computer: a Lithium-Ion main battery, a

backup battery (for memory backup), and a Real Time Clock (RTC) battery.

❑Expansion memory slot

An optional 8, 16, 32, 64, or 128 MB memory module can be installed in the memory

slot.

❑Parallel port

This port can be used to connect a Centronicscompatible printer or other parallel

device. The port supports Extended Capabilities Port (ECP) conforming to IEEE·1284.

❑Serial port

The serial controller is 16550UART compatible. This standard, 9-pin, serial port can

be used to connect serial devices such as a serial printer, serial mouse, or external

modem.

❑Externalmonitorport

The female, 15-pin, D-shell connector can be connected to an external SVGA monitor.

This computer supports Video Electronics Standards Association (VESA) Display

Data Channel (DDC) 2B compatible functions.

❑PS/2mouse/keyboard port

Either a PS/2 compatible keyboard or a PS/2 compatible mouse can be connected to

thisport.

❑PC card slot

The PC card slot accommodates two Personal Computer Memory Card International

Association (PCMCIA) 5 mm cards (Type II), or one 10.5 mm (Type III) card which

supports PCMCIA Release 2.01. These slots can also support advanced PC cards, such

as PC Card 16’s multifunction card, CardBus 32-bit card, or a Zoomed Video (ZV)

710CDT/720CDT

1-3

port, which is dedicated to high-performance video data transfer such as MPEG video

playback. The optional Desk Station V Plus and Enhanced Port Replictor II support

two additional 10.5 mm cards.

❑Docking interface port

This 240-pin port allows connection to an Enhanced Port Replicator II or a Desk

StationV Plus.

The Enhanced Port Replicator II duplicates the following ports on the computer: PS/2

keyboard, PS/2 mouse, serial, parallel, external monitor, audio line-in, audio line-out,

headphone, and microphone. It also provides a joystick port and two additional PC

card slots (Type III).

The Desk Station V Plus expands the features of the Enhanced Port Replicator II by

adding two PCI/ISA and one PCI bus expansion slots, a 5.25-inch disk drive bay, a

Selectable Bay, and an on-board SCSI-2 (small computer system interface) controller.

❑External FDD port

The external FDD port lets you connect an external FDD device when a CD-ROM

drive is installed.

❑AccuPoint

A pointer control stick, located in the center of the keyboard, provides convenient

control of the cursor without requiring desk space for a mouse.

❑Serial infrared port

This computer incorporates an IrDA1.0 (infrared data association) standard infrared

transmitter and receiver. It allows cableless data transfer at 115.2 Kbps.

❑SoundSystem

The sound system is compatible with Sound BlasterTM ProTM and Windows Sound

System. This computer is equipped with a microphone, stereo speakers, and the fol-

lowing jacks: audio line-in, audio line-out, headphone, and microphone.

❑Internal Modem (optional in some markets)

The modem supports V.34 data communication at 28.8 Kbps, V.17 class-1 facsimile

transmissions at 14.4 Kbps, and can be used as a speaker phone and Telephone An-

swering Machine (TAM). The computer is equipped with an RJ11 modem jack to

connect directly to a telephone line.

1-4

710CDT/720CDT

The 710CDT/720CDT Personal Computer is shown in Figure 1-1 and their system configura-

tion in Figure 1-2.

Figure 1-1 710CDT/720CDT personal computer

Figure 1-2 710CDT/720CDT system unit configuration

710CDT/720CDT

1-5

1.2 System Unit Block Diagram

The following figure shows a block diagram of the system unit.

Figure 1-3 System board block diagram

The system board is composed of the following major components:

❑Intel Pentium processor operating at 133 MHz and 2.9/3.3 volts. A math co-processor

and 16 KB cache memory are integrated into the processor.

❑Level-2 cache memory

DataRAM:

- 256 KB

- Two 32K x 32-bit pipe-line burst synchronous SRAM chips

- 3.3 volt operation

- 8 ns access time

1-6

710CDT/720CDT

TagRAM:

- 32 KB (only 8 KB is used)

- One 32K x 8-bit asynchronous SRAM chip

- 3.3 volt operation

- 15 ns access time

The level-2 cache uses direct mapping, utilizing a write-through policy.

❑StandardRAM

16 MB, eight 1M x 16-bit EDO DRAM chips

3.3 volt operation

No parity bit

60 ns access time

64-bit width data transfer

❑BIOS ROM (Flash EEPROM)

256 KB, one 256K x 8-bit chip

- 128 KB are used for system BIOS

- 64 KB are used for VGA-BIOS

- 8 KB are used for plug and play data area

- 8 KB are used for password security

- 16 KB are used for boot strap

- 32 KB are reserved

5 volt operation

120 ns access time

8-bit width data transfer

❑Optionalmemory

One expansion memory slot for 8, 16, 32, 64, and 128MB memory modules, which

consist of 1M x 16-bit chips (8, 16, 32MB) and 4M x 16-bit chips (64, 128MB).

EDO DRAM is used

3.3 volt operation

No parity bit

60 ns access time

64-bit width data transfer

❑Video RAM

2 MB, four 256K x 16-bit EDO DRAM chips

5 volt operation

60 ns access time

❑System controller Gate Array

This gate array has the following functions:

- CPU interface/control

- Level-2 cache memory control

- DRAM control

- PCI master/slave interface

-Write buffer(CPU-DRAM, CPU-PCI,PCI-DRAM)

710CDT/720CDT

1-7

- Prefetch buffer (PCI-DRAM)

- Two DMACs: 82C37 equivalent

- Two PICs: 82C59 equivalent

- One PIT: 82C54 equivalent

- Serial interrupt function

-Power managementcontrol

- Suspend/resume control

- CPU stop clock function

❑I/O controller Gate Array

This gate array has the following functions:

- Two UARTs 16550A equivalent (one SIO is used for SIR)

- One FDC µPD765A equivalent

- One ECP supported parallel port control

- ISA bus control

- PCI bus front end control

❑Multiplex Gate Array

This gate array is a multiplexer for a ZV port.

❑LCD interface Gate Array

This gate array controls data transfer between a VGA controller and LVDS.

❑PC Card Controller Gate Array

This gate array has the following functions:

- PC card control

- CardBus control

- ZV port support (multiplex gate array control)

❑Miscellaneous Gate Array

This gate array has the following functions:

-Communicationcontrol

Communication with KBC

I2C bus interface

Communication with power supply

Communication with Desk Station V Plus

CommunicationwithEEPROM

Communication register set

- PWM control

Beep volume

- Speaker control

- Universal I/O port

- Q-SW control

❑Modem interface Gate Array

This gate array controls modem interface LSIs.

1-8

710CDT/720CDT

❑Video Controller

Chips & Technology F65550 is used.

The video controller controls the internal LCD and an external CRT.

❑Keyboard Controller (KBC)

One M38802M4 chip is used.

The KBC includes the keyboard scan controller and keyboard interface controller.

The KBC controls the internal keyboard, external keyboard, AccuPoint, or PS/2

mouse.

❑AccuPoint Controller (IPSC)

One KPAAC0062A chip is used.

The controller provides simultaneous control of both the AccuPoint and a PS/2 mouse.

❑Real Time Clock (RTC)

One T9934 chip is used.

The T9934 has 128 bytes of memory. Fourteen (14) bytes are used for the calendar and

clock, and the remaining 114 bytes are used for system configuration data.

710CDT/720CDT

1-9

1.3 3.5-inch Floppy Disk Drive

The removable 3.5-inch FDD is a thin, high-performance, reliable drive that supports 720-KB

(formatted) 2DD and 1.44-MB (formatted) 2HD disks. When a CD-ROM is installed in the

Selectable Bay, an FDD attachment can be used to connect the FDD to the external FDD port.

The FDD is shown in Figure 1-4, and its specifications are listed in Table 1-1.

Figure 1-4 3.5-inch FDD

Table 1-1 3.5-inch FDD specifications

Item 2-MB mode 1-MB mode

Storage capacity (KB)

Unformatted 2,000 1,000

Formatted 1,440 720

Number of heads 2 2

Number of cylinders 80 80

Access time (ms)

Track to track 3 3

Average 181 181

Head settling time 15 15

Recording track density (tpi) 135 135

Data transfer rate (Kbps) 500 250

Rotation speed (rpm) 300 300

Recording method Modified Frequency Modulation (MFM)

1-10

710CDT/720CDT

1.4 2.5-inch Hard Disk Drive

The removable HDD is a random access, nonvolatile storage device. It has a non-removable

2.5-inch magnetic disk and mini-winchester type magnetic heads.

710CDT/720CDT supports a 1.13 GB HDD.

The HDD is shown in Figure 1-5, and its specifications are listed in Table 1-2.

Figure 1-5 2.5-inch HDD

Table 1-2 2.5-inch HDD specifications

Items (MK2720FC)

Storage capacity (GB) 1,216,954,368

Cylinders 2,358

Heads 16

Sectors 63

Bytes per sector 512

Rotation speed (rpm) 4,200

Recording method 8-9 RLL

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