Toshiba Satellite Pro 400CS User manual

400 Series
1-1
1.1 Features
The 400CS/400CDT (400 Series) is one of the lightest and most advanced portable computers
available. Utilizing advanced technology and high-speed components, the 400 series offers
multimedia functions, excellent display legibility, battery operation, and IBM PC/AT compat-
ibility. The 400 series system unit has the following features:
❑Microprocessor
An Intel Pentium® processor 75 MHz with Voltage Reduction Technology (VRT)
that operates at 75 MHz and 2.9 volts.
❑Disk storage
An internal 810 million byte (770 MB) Hard Disk Drive (HDD). A 3.5-inch Floppy
Disk Drive (FDD) supports 2HD (1.44 MB) floppy disks and 2DD (720 KB) floppy
disks. The FDD can also be installed in an attachment (option with 400CS) for con-
nection as an external device.
❑CD-ROM Drive (option with 400CS)
A full-size, quadruple-speed CD-ROM drive module can be installed instead of the
FDD module. The CD-ROM drive contains an ATAPI (AT attachment packet inter-
face) interface controller, and supports the following formats: audio CD, photo CD,
and ISO 9660.
❑Memory
Standard with 8 MB of CMOS RAM. This includes 640 KB of conventional memory
and 7360 KB of extended memory, which can be utilized as expanded memory com-
patible with the Lotus/Intel/Microsoft Expanded Memory Specification (LIM-EMS).
❑Display
The 400CS has a 10.4" full color, Dual-scan Supertwist Nematic (DSTN) LCD 640 X
480 pixels. The 400CDT has a 10.4" full color, Thin Film Transistor (TFT) LCD 640
X 480 pixels. The built-in display controller supports Video Graphics Array (VGA)
for the internal LCD and Super VGA (SVGA) for the external CRT.
❑Keyboard
An-easy-to-use 82/84-key keyboard provides a numeric keypad overlay for fast nu-
meric data entry or for cursor and page control. The computer’s keyboard supports
software that uses a 101- or 102-key enhanced keyboard.

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400 Series
❑Batteries
Three different batteries: a Li-Ion main battery, a backup battery (for memory
backup), and a RTC battery (Real Time Clock).
❑Expansion memory slot
An optional 8, 16, or 32 MB memory module can be installed in the memory slot.
❑Parallel port
Can be used to connect a Centronics compatible printer or other parallel device;
supports ECP (Enhanced Capabilities Port) conforming to IEEE·1284.
❑Serial port (9-pin)
The serial controller is 16550UART compatible. This port can be used to connect such
serial devices as a serial printer, serial mouse, or external modem.
❑RGB port
The female, 15-pin, D-shell connector can be connected to an external SVGA monitor.
❑Ext. Keyboard/Mouse port
Either a PS/2 compatible keyboard or a PS/2 compatible mouse can be connected to
this port. The computer automatically recognizes which device is connected.
❑FDD port
Enables a connection of the external FDD attachment if the CD-ROM module is
installed inside the system unit.
❑PC card slot
Supports up to two Personal Computer Memory Card International Association
(PCMCIA) standard version release 2.0 cards. The upper and lower slots can each
accommodate one Type II (5.0 mm) card, or the lower slot can accommodate one
Type III (10.5 mm) card when the upper slot is empty.
❑Enhanced port replicator port
Enables connection of an enhanced port replicator. The enhanced port replicator has
two PC card slots (Type III), and expands connections to the following devices: PS/2
keyboard, PS/2 mouse, serial port, parallel port, external CRT, joystick/MIDI port,
audio line-in, audio line-out, headphone, external FDD, AC-in, and AC-out.

400 Series
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❑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.
❑Infrared port
This machine incorporates an IrDA1.0 (115.2Kbps supported) standard infrared
transmitter and receiver.
❑Sound System
A Sound BlasterTM ProTM compatible sound system provides capability to record sound
and play it back with a built-in microphone and speaker. The sound system is equipped
with a volume control dial, headphone jack, microphone jack, and audio line-in jack.

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400 Series
The 400 Series Personal Computer is shown in figure 1-1.
Figure 1-1 400 series personal computer
The 400 system configuration is shown in figure 1-2.
Figure 1-2 400 system unit configuration

400 Series
1-5
1.2 System Unit Block Diagram
Figure 1-3 is a block diagram of the 400 series system unit.
Figure 1-3 400 series system board block diagram

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400 Series
The 400 series system board is composed of the following major components:
❑One Intel Pentium processor 75 MHz with VRT 64-bit microprocessor
Intel Pentium processor operates at 75 MHz and 2.9 volts.
❑Standard RAM
8 MB, four 1Mx16-bit chips
3.3 volt operation
No parity bit
Access time 70 ns
Data transfer is 64-bit width
EDO (extended data output) supported
❑BIOS ROM (Flash EEPROM)
128 MB (one 128Kx8-bit chip) memory
64 KB in the ROM are used for system BIOS
40 KB in the ROM are used for VGA BIOS
24 KB in the ROM are reserved
Access time 150 ns
Data transfer is 8-bit width
❑Video RAM
1 MB (Two 256Kx16-bit DRAM)
5 volt operation
❑Optional memory
One expansion memory slot is available for 8, 16, and 32 MB memory modules, which
may consist of 1 MBx16-bit chips
Total maximum memory size is 40 MB (if a 32 MB memory module is installed)
3.3 volt operation
No parity bit
Access time 60 ns
Data transfer is 64-bit width
EDO (extended data output) supported
❑One super integration (SI)
The following components:
- Two DMACs 82C37 equivalent
- Two PICs 82C59 equivalent
- Two UART 16550 equivalent
- One PIT 82C54 equivalent
- One FDC TC8565 equivalent
- One VFO TC8568 equivalent
- One I/O port decode
- One SIO port control
- One printer port control supported ECP
- One FDD control
- One speaker control
- One power communication control

400 Series
1-7
❑System Controller Gate Array (SCPCNT-GA)
This gate array has the following functions:
CPU control
SMI control
CPU clock control
Memory control
64-bit bus memory control
32-bit bus memory control
Bus control
64-bit data bus <==>32-bit data bus
32-bit local bus control
Address latch control
I/O register control
Processing speed control
❑ISA Bus Controller Gate Array (SISCNT3-GA)
This gate array has the following functions:
Bus control
32-bit data bus <==> 16-bit data bus
ISA bus interface control
ISA bus access control
DMAC control
DMA address generation
I/O control
Suspend/Resume sequence
Memory control
IAS bus interface control
Refresh address generation
I/O register control
Suspend/Resume sequence
❑PCMCIA Controller Gate Array
This gate array has the following functions:
PCMCIA memory card control
PCMCIA I/O card control
❑I/O Controller Gate Array (IOCNT-GA)
This gate array has the following functions:
Internal Communication controller
KBC, main CPU communication register file
KBC interrupt controller
KBC communication controller
I2C bus control
Others Speaker volume adjust PWM control
Sound board interface
BIOS-ROM interface
SIM control
IrDA (SIR) control

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400 Series
❑Video Controller
Chips & Technologies F65546 is used
Controls internal TFT/STN color LCD and external SVGA compatible CRT
❑Keyboard Controller (KBC)
One M38802M4 chip is used
This KBC includes the keyboard scan controller and keyboard interface controller
The KBC controls the internal keyboard, external keyboard, PS/2 mouse
❑Real Time Clock (RTC)
One T9934 chip is used
The T9934 has 128 of bytes memory
Fourteen bytes of memory are used for the calendar and clock, the remaining 114
bytes are used for the system configuration data

400 Series
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1.3 3.5-inch Floppy Disk Drive
The 400 series 3.5-inch Floppy Disk Drive (FDD) is a thin, high-performance reliable drive
that supports 720-KB (formatted) 2DD and 1.44-MB (formatted) 2HD 3.5-inch floppy disks.
The 400 series FDD is shown in figure 1-4.
Figure 1-4 3.5-inch FDD
The specifications for the FDD are listed in table 1-1.
Table 1-1 3.5-inch FDD specifications
Item 2-MB mode 1-MB mode
Storage capacity (KB)
Unformatted 2,000 1,000
Formatted 1,311 737
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)

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400 Series
1.4 2.5-inch Hard Disk Drive
The 770 MB Hard Disk Drive (HDD) is a random access non-volatile storage device. It has a
non-removable 2.5-inch magnetic disk and mini-winchester type magnetic heads.
The 400 series is shown in figure 1-5.
Figure 1-5 2.5-Inch HDD
Specifications for the HDD are listed in table 1-2.
Table 1-2 2.5-inch HDD specifications
Items (MK1926FCV)
Storage capacity (MB)
Formatted 815
Number of disks 3
Data heads 6
Data surfaces 6
Bytes per sector 512
Rotation speed (rpm) 4200
Recording method 8-9 RLL