Toshiba T-Series T2200sx User manual

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Chapter 1
Hardware Overview

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Contents
1.1 T2200SX Features.............................................................................................................1-5
1.2 System Unit Block Diagram .............................................................................................. 1-8
1.3 3.5-inch Floppy Disk Drive ............................................................................................. 1-11
1.4 2.5-inch Hard Disk Drive ................................................................................................ 1-12
1.5 Keyboard......................................................................................................................... 1-13
1.6 Sidelit Liquid Crystal Display ......................................................................................... 1-14
1.6.1 LCD Module..................................................................................................... 1-14
1.6.2 FL Inverter Board ............................................................................................. 1-15
Tables
Table 1-1 3.5-inch FDD specifications................................................................................. 1-11
Table 1-2 2.5-inch HDD specifications ................................................................................ 1-12
Table 1-3 Sidelit LCD specifications ................................................................................... 1-14
Table 1-4 FL inverter board specifications........................................................................... 1-15
Figures
Figure 1-1 T2200SX personal computer..................................................................................1-7
Figure 1-2 T2200SX system unit configuration.......................................................................1-7
Figure 1-3 T2200SX block diagram ........................................................................................1-8
Figure 1-4 3.5-inch FDD....................................................................................................... 1-11
Figure 1-5 2.5-inch HDD ...................................................................................................... 1-12
Figure 1-6 Keyboard ............................................................................................................. 1-13
Figure 1-7 Sidelit LCD ......................................................................................................... 1-14

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1.1 T2200SX Features
The Toshiba T2200SX is one of the lightest and most advanced portable computers available.
Utilizing advanced Large Scale Integration (LSI) and Complimentary Metal-Oxide Semiconductor
(CMOS) technology and high speed components, the T2200SX provides a minimum size, light
weight, low power usage, and high reliability machine. The T2200SX also offers excellent display
legibility, battery operation, and IBM PC/AT compatibility.
The T2200SX system unit consists of the following:
Microprocessor An 80386SX-20 32-bit microprocessor, operating at either 20MHz or 10MHz.
It is also capable of a 5MHz sleep mode.
Math co-processor A built-in socket is provided for an 80387SX-20 math co-processor (NDP).
Memory 2MB of CMOS Random Access Memory (RAM) is provided as standard
memory. This includes 640KB of conventional and 1408KB of extended
memory that can be utilized as expanded memory compatible with the Lotus/
Intel/Microsoft Expanded Memory Specification (LIM-EMS). The standard
memory is expandable by 2, 4, or 8MB increments to a maximum of 10MB.
Disk Storage An internal 2.5" 40MB, 60MB, or 80MB Hard Disk Drive (HDD) provides an
average access time of 19ms.
A 3.5" Floppy Disk Drive (FDD) supports 2HD (1.44MB) as well as 2DD
(720KB).
Display A new larger surface area, high resolution, fully adjustable Liquid Crystal
Display (LCD) composed of 640 horizontal and 480 vertical pixels displays
25 lines of standard text, 80 characters wide. The LCD displays 16 levels of
gray and supports the High Resolution Graphics Subsystem (HRGS), includ-
ing video graphics array (VGA) functions.
Keyboard An 82/84-keyboard has full-sized keys, a numeric keypad overlay, cursor and
page control. The keyboard supports software that uses the industry standard
101/102-key keyboard.
AC Adapter The universal auto-sensing AC adapter supplies power to operate the
T2200SX and recharge its batteries. It can operate from a range of 100 to 240
volts. Optional power cords support various countries’ AC outlet configura-
tions.
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Batteries There are three different batteries: a main battery, for system power; a sub-
battery, for back-up power, and an RTC battery, which keeps the date and
time and system configuration even when power is off.
Mouse Port A PS/2 mouse connector is located on the right side of the computer.
Interface Ports A parallel port, serial port, RGB port, numeric keypad port, and expansion
bus connector are provided to allow the T2200SX to interface with a variety
of optional equipment.

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The T2200SX Personal Computer is shown in Figure 1-1 and the T2200SX system configuration is
shown in Figure 1-2.
Figure 1-1 T2200SX personal computer
Figure 1-2 T2200SX system unit configuration

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1.2 System Unit Block Diagram
Figure 1-3 is a block diagram of the T2200SX system unit.
Figure 1-3 T2200SX block diagram

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The system board in the T2200SX is composed of the following major components:
❑Central Processing Unit (CPU): 80386SX-20
The CPU is a 32-bit microprocessor operating at 20MHz (high) and 10MHz (low) clock
speeds.
❑Math coprocessor (NDP) socket for the 80387SX-20 (optional)
❑Super Integration (SI): T9901
The SI stores the following components:
· Two Direct Memory Access Controllers (DMACs): 82C37A
· Two Programmable Interrupt Controllers (PICs): 82C59A
· One Programmable Interval Timer (PIT): 82C54
· One Floppy Disk Controller (FDC): TC8565
· One Serial Input/Output Controller (SIO): TC8570
· One Variable Frequency Oscillator (VFO): TC8568
· One I/O Controller
❑Real Time Clock (RTC): 146818AF
The RTC chip stores the date, time, and system configuration with power supplied from the
RTC battery.
❑Keyboard Controller (KBC): U37452
❑Power Supply Controller (PSC): U47C440
❑Memory:
Standard RAM: 2MB
Backup RAM: 32KB
BIOS ROM: 128KB (96KB are used)
BIOS ROM contains the Initial Reliability Test (IRT), the system’s
Basic Input/Output System (BIOS), and the video BIOS.
Video RAM: 256KB
Optional memory cards:
The system can have up to 10MB of RAM by installing an optional memory card.
❑System control gate array: GA-SCNT2 (208-pin)
❑VGA display controller: PVGA1F (132-pin)

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❑Oscillators (OSC):
40.0MHz OSC (X1) is used for the CPU.
44.9MHz OSC (X2), 28.322MHz OSC (X3), and 25.175MHz OSC (X4) are used for the
video.
14.7456MHz OSC (X5) is used for the COM.
14.31818MHz OSC (X6) is used for the KBC.
32.768KHz OSC (X7) is used for the RTC.
24MHz OSC (X8) is used for the FDC and VFO.
See Appendix A for the location of the oscillators.