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Toshiba T1900 Series User manual

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1.1
Features
The Toshiba T1900 Series
of
computers are among the highest and most advanced notebook
computers available. Utilizing advanced technology and high-speed components, the T1900
and T1900C offer excellent display legibility, battery operation
and
mM
PC/AT compatibility.
The T1900 Series
of
computers consist
of
the following features:
o Microprocessor
The i486SX-20 microprocessor operates
at
20
MHz, 3.3 Volts.
o Cache memory
8
KB
of
cache memory is stored in the i486SX microprocessor.
o Disk storage
The
internal 80, 120,
or
200
Megabyte (MB)
Hard
DiskDrive (HOD) has an
average access time
of
19 milliseconds. A 3.5-inch Floppy DiskDrive (FDD)
supports
2HD
floppy disks (1.44 Mbytes) and
2DD
floppy disks (720 Kbytes).
o Memory
The
T1900ff1900C
comes standard with 4
MB
of
CMOS Random Access
Memory (RAM) 3.3 Volts. This includes 640
KB
of
conventional memory and
3,456
KB
of
extended memory which can
be
utilized as expanded memory
compatible with the LotuslIntellMicrosoft Expanded Memory Specifications
(LIM-EMS).
o Monochrome
LCD
(TI900)
The high-resolution, Liquid Crystal Display (LCD) displays 64Ox480 pixels with
a 64-level gray scale.
The T1900 internal display controller supports Video Graphics Array (VGA)
functions
on
the internal display device.
o
STN
color
LCD
(TI900C)
The high-resolution, Ultra Supertwist Nematic (Ultra STN) colorLiquid Crystal
Display (LCD) displays 64Ox480 pixels with 226,981 colors for
both
graphics
and characters.
The T1900C internal display controller supports Video Graphics Array (VGA)
functions
on
the internal display devices.
1-1
1-2
o Keyboard
An easy-to-use
82184-key
enhanced keyboard with full-size
keys
and
standard
spacing
is
compatible with
mM
standard software.
o Batteries
The computer uses three different batteries: a
main
battery, a backup battery,
and
a
Real
Time
Clock (RTC) battery.
o Personal Computer Memory Card International Association (pCMCIA) card
slot
A PCMCIA slot enables you to install
an
MiNC
Toshiba card modem or other
industry-standard PCMCIA Release 2.0 card.
o Parallel port
The Centronics-compatible parallel interface port serves two purposes: the port
can
be used to connect a Centronics-compatible printer oran external 5
114"
floppy
disk
drive.
o RS-232-C port
A 9-pin serial interface port.
o Mouseport
The 6-pin mouse port on the back can accommodate
an
mM
PS/2 mouse.
o Keyboard port
The 6-pin keyboard port on the back
can
accommodate an
mM
PS/2 keyboard.
o Microsoft
Ball
Point mouse with Quick Port (BPQP) connection
The BPQP port
is
located on the right
side
of
the TI9001TI900C.
o RGBport
The IS-pin
RGB
port on the back can accommodate
an
external video
display.
o Memory card slot
The memory card slot enables you to install a Toshiba optional memory card.
The T1900ff1900C Personal Computer is shown
in
Figure 1-1, and its system configuration
is shown in Figure 1-2.
Figure 1-1
T19001T190OC
Personal Computer
r---------------------------------------,
PJ11
PJ3
PJ6
PJ7
PJ4
PJ9
PJ2
FATSUe
System
Board
PJ1
PJ5
PJ10
PJ502
I
,
,
,
,
,
1-
________
_
Power
Supply
PJ206
PJ205
FATSLe
System
Board
PJ204
PJ203
PJ202
PJ201
Figure
J-2
TJ900ITJ90OC
System
Unit
Configuration
1-3
1.2 System Unit Block Diagram
Figure 1-3 is a block diagram
of
the T1900fI'1900C system unit.
<
I<
I<
I(
en
::J
II)
I<.
c
en
-<
C
<
""-
1-4
BIOS
ROM
12V
1281(x
8bII
CPU3V
CPU
1488SXA
(CACHE
8KB)
(J
)
B3V
System
ConboBer·
GA
vee
VCC
:
+5V
(
+5V
)
B5V
: Badwp
5V
(
+5V
)
ATC
3V:
RTC
Backup
(+3V)
MeV
:
Pawer
supply
mlcrapracas80r
(
+3.3V
)
CPU3V
:
+3.3V
(+3.3V)
83V: Baclwp3.3V (+3.3V)
<;;>
B3V
·'4
System
I
Mernary
12
L._._._._
....•.
J
512K
x
8bI1
x8
K-
MBS1andard
OMB
Maxlnum
J
Serial
Pon
9P1
n
vee
TII01-SI
~
DMAx2.
PIC
x2.
PIT
x
1,
SIOx2
Prlnt.rlEld.
FDD
25
Pin
FDCx1,YFOx1
~
InLFDD
3.5
~
HOD
2.5
:>I
ATC3V
RTC
1
IB5V
_IBSV
I Monoctuom.
/I
VGA
Controller
GA
---...::t
VRAM
LCD
or
STN
ColDr
LCD
~
~MCIA
Conl.-GA
1
PCMCIACard
..
vee
lint.
Keyboard
I
r-
Ball
PoInt
Mouse
KBC
.h
S
-.
_.9Uk!.~!!..._
~PS/2
Keyboardl
PS/2
Mouse
Pan
MCV
Figure 1-3
T19001T190OC
System BoardBlockDiagram
The T19001T1900C system board is composed
of
the following major components:
o An i486SX-20
CPU
o Super Integration (SI) T9901, which stores
the
following components:
•
Two
Direct Memory Access Controllers (DMAC): 82C37
•
Two
Programmable Interrupt Controllers (PIC): 82C59
• One Programmable Interval Timer (pIT): 82C54
• One Floppy Disk Controller (FOC): TC8565
• One Serial Input/Output Controller (SID): TC8570
• One Variable Frequency Oscillator (VFO): TC8568
• One I/O Controller
• One Printer
Port
Controller
• One Speaker Controller
o A Real Time Clock (RTC)
A T9934 chip with 128 bytes
of
memory is used. Fourteen bytes are used for the
calendar and clock, and the remaining 114 bytes are used for system configura-
tion data.
OSC
(X3) generates 32.768
KHz
for RTC.
o A Keyboard Controller (KBC)
AnM37452M4 chip is used.
The KBC, which includes the keyboard scan controller and keyboard interface
controller, controls the internal keyboard, external keyboard port, PS/2 mouse
port, and Ball Point Quick Port.
o Memory
Standard RAM:
Cache memory:
BIOS ROM:
Video RAM:
4MB
8 KB (inside CPU)
128 KB (96 KB are used)
This
ROM
contains Initial Reliability Test (IRT), Basic
Input/Output System (BIOS), and video BIOS.
256KB
Optional memory cards expand memory
to
a maximum
of
20 MB.
o
VGA
display controller
The controller controls the internal and external VGA-compatible display.
1-5
1-6
o Clock Generator receives 14.31818
MHz
(Xl)
and
generates the
following
frequencies:
•
20
MHz
for the CPU
• 14.7456
MHz
for the COM
•
24
MHz
for the
FOC
and
VFO
•
16
MHz
is
used for
GA
• 14.31818
MHz
is
used for
T9901
(SI)
o Gate Array
System Controller Gate Array
This gate array
has
the following
functions:
• Memory Controller
-DRAM Controller
-CPU Controller
-Compatible Bus Interface Controller
• Bus Controller
-Compatible Bus Interface Controller
-Compatible Access Controller
-
DMAC
Controller
-
110
Controller
• Address Latch Controller
-32-Bit to 16-Bit Controller
-Address Latch
-DMA Address Generator
-Refresh Address Generator
•
110
Register
-Compatible
110
Port
-Saving the data
of
the Register (in resume) Controller
-Toshiba Special Register
• 20 MHz/10
MHz
Controller
• Data Bus Change Controller
• DataLatch
PCMCIA Gate Array
This gate array
has
the following functions:
• Memory Card Controller
-PCMCIA
IC
Card Controller
-Toshiba Modem Card Controller
1.3 3.5-inch
Floppy
Disk Drive
The T1900ff1900C 3.S-inch Floppy Disk Drive (FDD) is a thin, high-perfonnance reliable
drive that supports 720 KB (formatted) 2DD and 1.44 MB (formatted) 2HD 3.S-inch floppy
disks.
The T1900ff1900C FDD is shown in Figure 1-4, and its specifications are described in Table
1-1.
Figure 1-4 3.5-inch
FDD
Table
1-1 3.5-inch
FDD
Specifications
Item
2MBMode
1 MBMode
Storage capacity
(KB)
Unformatted 2,000 1,000
Formatted
1,311
737
Number of
heads
2 2
Number
of
cylinders
80 80
Access
time
(rna)
Trackto 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)
1-7
1.4 2.5-inch Hard Disk Drive
The Hard DiskDrive (HOD) is a random access, non-volatile storage device.
It
has a non-
removable 2.5-inch magnetic disk and mini-winchester type magnetic heads.
T1900ff1900C supports 80, 120, and 200 MB hard disk drives.
The T1900ff1900C
HDD
is shown in Figure 1-5, and its specifications are described in Table
1-2.
Figure 1-5 2.5-inch HDD
Table 1-2 2.5-inch HDD Specifications
SOMB
120MB
200MB
Item (CP2084) (MK1422FCV) (CP2124) (MK2124FC) (MK2224FC)
Stora~
capac:!}, (MB)
ormatte 85.2 86.0 121.6 130.1 213.0
Number
of
disks 2 1 2 2 2
Data heads 4 2 4 4 4
Data surfaces 4 2 4 4 4
Tracks
per
surface 1,096 1,501 1,123 1,155 1,560
Sectors per track
38(+1)
56(+1)
53 (+1)
55(+1)
-
Bytes
per
sector 512 512 512 512 512
Access time (ms)
Track
to
track
10
3
10
5 3
Average
19
15
17
17
12
Maximum
40
25
35
36
25
Rotation speed (rpm) 3,486 3,600 3,743 3,200 4,000
Data transfer rate (bps)
ToIfrom media
12M
17.6M
IBM
15.3M
18.9
to
31.6 M
Interleave 1
:1
1
:1
1
:1
1
:1
1
:1
Recording method
2-7RLU
1-7
RLL
2-7
RLU
1-7
RLL 1-7 RLL
1-7
RLL
1-7
RLL
1-8
1.5
Keyboard
The 82-(USA)
or
84-(European) keyboard is mounted
on
the TI900/T1900C's system unit,
and is connected
to
the keyboard controller
on
the system board through a 19-pin flat cable.
The keyboard is shown in Figure 1-6.
See Appendix F for optional keyboard configurations.
Figure 1-6 Keyboard
1-9
1.6 Sidelit Liquid Crystal Display (T1900)
The sidellt Liquid Crystal Display (LCD)
is
composed
of
an
LCD
module, aFluorescent
Lamp
(FL), and
an
FL
inverter board.
1.6.1
LCD Module (T1900)
The T
1900
sidellt
LCD
supports
64Ox480
pixels with a High Resolution Graphics Subsystem
(HRGS)
and
64
levels
of
gray. The HRGS includes the functions
of
the Video Graphics
Array
(VGA).
The
LCD
receives vertical
and
horizontal synchronizing
signals,
8-bit data signals (4-bit upper
block data
signal
and
4-bit lower block data signal),
and
shift
clock for data transmission.
All
signals are CMOS-level compatible.
The sidellt
LCD
is
shown
in
Figure
1-7,
and its specifications are described
in
Table
1-3.
Figure 1-7 Sidelit LCD
Table 1-3 Sidelit LCDSpecifications
Item Specifications
Number
of
Dots
(clots)
640 x 480
Dot
pitch
(mm)
0.30
(W)
x 0.30 (H)
Display
area
(mm)
198
(W)
x 150 (H)
Contrast 17:1 (typically)
FL
current
(rnA)
5.0
FL
frequency (KHz) 42
1-10