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Chapter 1
System Overview
T he Dell
®
Latitude
®
XPi CD is a lightweight, expandable portable computer that use the Intel
®
Pentium
®
microprocessor. This chapter provides an overview of the features and technical specifications of this computer.
S
ystem Features
In addition to the standard features found in a Dell portable computer, the Dell
Latitude XPi CD models include the following new features:
• 64-bit-wide data bus.
• 60-MHz local bus and a 30-MHz PCI bus.
• 256-KB pipelined-burst SRAM secondary cache.
• 16 MB of nonremovable, EDO-type memory built in to the system board.
Memory can be increased up to 48 MB by installing combinations of 8- and
16-MB fast-page memory modules in the two memory sockets on the system board.
• 128-bit accelerated graphics adapter with 1.1 MB of integrated video memory. The integrated video adapter is attached to the PCI bus.
• Full multimedia capability through the following standard features:
— A built-in CD-ROM drive
— MPEG software
— Hardware wavetable support
— SoundBlasterPro-compatible voice and music functions
— Jacks for connecting external speakers, headphones, or a microphone
• Two infrared ports that compatible with the Infrared Data Association
(IrDA) Standard 1.1 (Fast IR) for use with external devices.
• Keyboard with sound and Microsoft
®
Windows
®
operating system support.
• Support for two 3.3-V or 5-V PC Cards that adhere to the standards of the
Personal Computer Memory Card International Association (PCMCIA).
The computer supports type I, type II, or type III cards (in any combination).
For a complete list of system features, see “Technical Specifications” found later in this chapter.
System Overview 1-1
P
hysical Description
display assembly
LCD panel keyboard
trackball assembly display assembly latch indicator panel microphone tilt-support foot (2) infrared port main battery assembly speaker bottom case assembly diskette drive
CD-ROM drive
Figure 1-1. Front View of the Notebook Computer
1-2 Dell Latitude XPi CD Service Manual
indicator panel hard-disk drive
I/O panel infrared port
Advanced Port
Replicator connector
DC power input connector security cable slot audio jacks (3) speaker
PC Card slot power switch tilt-support foot
Figure 1-2. Back View of the Notebook Computer
Indicator Panel
LCD panel
Legend power/suspend indicator diskette-drive access indicator hard-disk/CD-ROM drive access indicator
PC Card access indicator low-battery indicator charging indicator
Figure 1-3. Indicator Panel
Num Lock indicator
Caps Lock indicator
Scroll Lock indicator
System Overview 1-3
The portable computer has nine indicators: six on the display assembly’s indicator panel and three on the keyboard assembly. Each of the six indicators on the display assembly has an identical pair of LEDs: one is visible on the indicator panel when the display is open, and the other is visible through an aperture on the outside of the display assembly when the display is fully closed. The subsections that follow describe the functions of the indicators.
Power/Suspend Indicator
The power/suspend indicator is a green LED. After the computer is turned on, the power/suspend indicator lights up constantly to indicate that the computer is receiving stable power. When the computer enters suspend mode, the indicator blinks once approximately every 8 seconds.
Diskette-Drive Access Indicator
The diskette-drive access indicator is a green LED. The indicator lights when data is being transferred to or from the diskette drive.
Hard-Disk/CD-ROM Drive Access Indicator
The hard-disk/CD-ROM drive access indicator is a green LED. The indicator lights when data is being transferred to or from the hard-disk drive or the
CD-ROM.
PC Card Access Indicator
The PC Card access indicator is a green LED. The indicator lights when data is being transferred to or from an installed PC Card (also known as a PCMCIA
card).
Low-Battery Indicator
The low-battery indicator is an amber LED. This indicator is used in conjunction with the speaker to indicate either of the following low-battery conditions:
• The first low-battery warning occurs when the main battery’s charge has been depleted to 8 percent of its fully charged condition. The low-battery indicator turns on and the speaker emits five beeps.
• The second and final low-battery warning occurs when the main battery’s charge has been depleted to 3 percent of its fully charged condition. The speaker beeps twice every 1 to 2 seconds for 15 seconds; then the system does a suspend-to-disk operation automatically before shutting down.
Charging Indicator
The charging indicator is an amber LED. The indicator turns on when the main battery begins charging and blinks to show the battery is fully charged.
1-4 Dell Latitude XPi CD Service Manual
Keyboard Indicators
The keyboard controls the operation of the numeric lock (Num Lock) indicator, the capitals lock (Caps Lock) indicator, and the Scroll Lock indicator, all of which are visible through apertures at the top of the keyboard. These indicators are associated with the <NUM LOCK> key, the <CAPS LOCK> key, and the
<SCROLL LOCK> key; when lit, the LEDs indicate the active state of these keys.
C
ontrolling Computer Power
The power button does not directly control power to the computer. Instead, when you slide the power button toward the front of the computer and then release it, the button momentarily closes the power switch on the system board.
The power switch sends a signal to the power management controller, signaling the controller to initiate a change of state of the computer’s power. The resulting power state depends on the present power state. The following subsection gives a description of the power states.
Power States
Sliding the power button toward the front of the computer initiates a change from the current power state to a different state. The protocols for the power state changes are as follows:
• If the computer is off (no indicators on) and the display is open and/or an external monitor is attached to the computer, sliding the power button initiates a boot operation.
• If the computer is off, if the display is closed, and if no external monitor is attached, sliding the power button causes the computer to run the POST and then turn off.
• If the computer is on and the SYSTEM SWITCH option in System Setup is set to ON/OFF , sliding the power button turns off the computer.
• If the computer is on and the SYSTEM SWITCH option in System Setup is set to S2D/RFD , sliding the power button causes the computer to enter suspendto-disk mode.
• If the computer is in suspend mode (the power/suspend indicator flashes every 8 seconds), if the SYSTEM SWITCH option in System Setup is set to
ON/OFF , and if the display is open or an external monitor is attached, sliding the power button turns off the computer.
• If the computer is in suspend mode (the power/suspend indicator flashes every 8 seconds), if the SYSTEM SWITCH option in System Setup is set to
S2D/RFD , and if the display is open or an external monitor is attached, sliding the power button causes the computer to enter suspend-to-disk mode.
System Overview 1-5
• If the computer is in suspend mode (the power/suspend indicator flashes every 8 seconds), if the display is closed, and if no external monitor is attached, sliding the power button has no effect on the power state. The computer remains in suspend mode.
• If the computer is in suspend-to-disk mode, sliding the power button causes the computer to initiate the resume-from-disk operation.
I
nterrupt Assignments
Table 1-1. Interrupt Assignments
IRQ Line Used/Available
IRQ0 Generated by the system timer
IRQ1
IRQ2
IRQ3
IRQ4
IRQ5
IRQ6
IRQ7
IRQ8
IRQ9
IRQ10
IRQ11
IRQ12
IRQ13
IRQ14
IRQ15
Generated by the keyboard controller to signal that the keyboard output buffer is full
Generated internally by the interrupt controller to enable IRQ8 through IRQ15
Available for use by a PC Card unless the built-in serial port or infrared port is configured for COM2 (the default)
Available for use by a PC Card unless the built-in serial port is configured for COM1 (the default)
Available for use by the audio controller
Generated by the diskette drive controller to indicate that the diskette drive requires the attention of the microprocessor
Available for use by a PC Card or audio controller if the built-in parallel port is disabled
Generated by the system I/O controller’s RTC
Available for use by the PC Card interrupt controller or the audio controller
Available for use by a PC Card or audio controller unless the
Advanced Port Replicator is attached
Available for use by a PC Card unless the Advanced Port Replicator is attached
Generated by the keyboard controller to indicate that the output buffer of the integrated trackball or external PS/2 mouse is full
Reserved for use by the internal coprocessor
Generated by the hard-disk drive to indicate that the drive requires the attention of the microprocessor
Reserved for the CD-ROM drive
1-6 Dell Latitude XPi CD Service Manual
T
echnical Specifications
Table 1-2. Technical Specifications
Microprocessor
Microprocessor type . . . . . . . . . . .
Intel Pentium microprocessor
Microprocessor speed . . . . . . . . . .
150 MHz
Bus architecture . . . . . . . . . . . . . .
PCI
Internal cache memory . . . . . . . . .
16 KB
External cache memory. . . . . . . . .
256 KB pipelined-burst SRAM
Math coprocessor . . . . . . . . . . . . .
internal to the microprocessor
Chip Set and Bus
System chip set . . . . . . . . . . . . . . .
Pico Power Vesuvius-LS Core Logic
Microprocessor data bus width . . . 64 bits
DRAM bus width . . . . . . . . . . . . .
64 bits
Address bus width. . . . . . . . . . . . .
32 bits
Security EEPROM . . . . . . . . . . . .
256 bytes
Flash EPROM . . . . . . . . . . . . . . . .
256 KB
Local bus. . . . . . . . . . . . . . . . . . . .
60 MHz
PCI bus . . . . . . . . . . . . . . . . . . . . .
30 MHz
PC Card
PC Card controller . . . . . . . . . . . .
Texas Instruments PCI1130 CardBus controller
PC Card connectors . . . . . . . . . . .
two (supports type I and type II cards in any combination; type III cards can be used only with type I or type II cards)
Cards supported . . . . . . . . . . . . . .
3.3-V and 5-V
PC Card connector size. . . . . . . . .
68 pins
Data width (maximum) . . . . . . . . .
32 bits
Memory
Architecture . . . . . . . . . . . . . . . . .
EDO memory 1
1
Memory module sockets . . . . . . . .
two
The system supports fast-page-mode memory modules for memory upgrades.
System Overview 1-7
Table 1-2. Technical Specifications (Continued)
Memory (Continued)
Memory module type and capacities . . . . . . . . . . . . . . . . . . .
8- and 16-MB fast-page mode
Standard RAM . . . . . . . . . . . . . . .
16 MB (EDO) on system board
Maximum RAM . . . . . . . . . . . . . .
48 MB
Memory access time: tRAC . . . . . . . . . . . . . . . . . . .
70 ns tCAC . . . . . . . . . . . . . . . . . . .
20 ns
BIOS address . . . . . . . . . . . . . . . .
F000:0000
Connectors
Serial (DTE) . . . . . . . . . . . . . . . . .
one 9-pin connector; 16550-compatible,
16-byte buffer
Parallel . . . . . . . . . . . . . . . . . . . . .
one 25-hole connector; unidirectional, bidirectional, EPP 1.9, or ECP
Monitor . . . . . . . . . . . . . . . . . . . . .
one 15-hole connector
PS/2 . . . . . . . . . . . . . . . . . . . . . . .
one 6-pin mini-DIN (this connector does not support more than one device at a time)
Infrared . . . . . . . . . . . . . . . . . . . . .
two ports compatible with IrDA
Standard 1.1 (Fast IR)
Audio . . . . . . . . . . . . . . . . . . . . . .
microphone-in line-in/audio-in headphones/speakers
Advanced Port Replicator . . . . . .
200-pin connector
Audio
Audio type . . . . . . . . . . . . . . . . . .
SoundBlasterPro-compatible 3.01 voice and music functions
Audio controller . . . . . . . . . . . . . .
ES1888
ES690 wavetable music synthesizer,
ES938 3D audio spatializer
Stereo conversion . . . . . . . . . . . . .
16 bit (analog-to-digital and digitalto-analog)
FM music synthesizer. . . . . . . . . .
20-voice, 72-operator
1-8 Dell Latitude XPi CD Service Manual
Table 1-2. Technical Specifications (Continued)
Audio (Continued)
Interfaces:
Internal . . . . . . . . . . . . . . . . . .
ISA bus
External . . . . . . . . . . . . . . . . . .
stereo line-in minijack microphone-in minijack headphones/speakers-out minijack
Speakers . . . . . . . . . . . . . . . . . . . .
four 8-ohm speakers
Internal speaker amplifier . . . . . . .
1 W into 8 ohms stereo
Headphones amplifier . . . . . . . . . .
150 mW into 32 ohms stereo
Controls. . . . . . . . . . . . . . . . . . . . .
volume can be controlled through key combinations, software application menus, or the Speaker window in the Dell
Control Center
Video
Video type . . . . . . . . . . . . . . . . . . .
hardware-accelerated, 128-bit PCI
Video controller . . . . . . . . . . . . . .
NeoMagic 2090
Integrated video memory . . . . . . .
1.1 MB
Display
Type. . . . . . . . . . . . . . . . . . . . . . . .
active-matrix color (TFT)
Dimensions:
Height . . . . . . . . . . . . . . . . . . .
195.0 mm (7.68 inches)
Width. . . . . . . . . . . . . . . . . . . .
272.0 mm (10.7 inches)
Diagonal . . . . . . . . . . . . . . . . .
307.5 mm (12.1 inches)
Maximum resolution. . . . . . . . . . .
800 x 600 pixels; 65,536 colors
Response time (typical) . . . . . . . .
80 ms
Operating angle. . . . . . . . . . . . . . .
0
°
(closed) to 180
°
Dot pitch . . . . . . . . . . . . . . . . . . . .
0.31 mm
Power consumption:
Panel (typical) . . . . . . . . . . . . .
0.69 W
Backlight . . . . . . . . . . . . . . . . .
2.10 W
Controls. . . . . . . . . . . . . . . . . . . . .
brightness can be controlled through a key combination, the Display window in the
Dell Control Center, or the System Setup program
System Overview 1-9
Table 1-2. Technical Specifications (Continued)
Keyboard
Number of keys . . . . . . . . . . . . . .
85 (U.S., Canada, Korea, Thailand, and locations that use traditional Chinese);
86 (Europe);
87 (Japan)
Key travel . . . . . . . . . . . . . . . . . . .
3.0
±
0.5 mm (0.12
±
0.02 inch)
Key spacing . . . . . . . . . . . . . . . . .
18.25 mm (0.72 inch)
Layout. . . . . . . . . . . . . . . . . . . . . .
QWERTY, AZERTY, Kanji
Battery
Type . . . . . . . . . . . . . . . . . . . . . . .
lithium ion
Dimensions:
Height . . . . . . . . . . . . . . . . . . .
20.5 mm (0.81 inch)
Depth . . . . . . . . . . . . . . . . . . .
152.75 mm (6.01 inches)
Width . . . . . . . . . . . . . . . . . . .
78.5 mm (3.09 inches)
Weight. . . . . . . . . . . . . . . . . . . . . .
0.41 kg (0.9 lb)
Voltage . . . . . . . . . . . . . . . . . . . . .
14.4 VDC
Capacity . . . . . . . . . . . . . . . . . . . .
36 WH
Charge time (approximate): 2
Computer on . . . . . . . . . . . . . .
2.5 hours
Computer off . . . . . . . . . . . . .
1.5 hours
Operating time (approximate, with no power management features enabled) 2 . . . . . . . . . . . . . . . . . . . .
2 to 3.5 hours (without a CD-ROM drive in use )
Life span (approximate) 2 . . . . . . .
400 discharge/charge cycles
2
Temperature range:
Charge . . . . . . . . . . . . . . . . . .
10
° to 40
°
C (50
°
to 104
°
F)
Discharge . . . . . . . . . . . . . . . .
10
°
to 40
°
C (50
°
to 104
°
F)
Storage . . . . . . . . . . . . . . . . . .
–40
° to 65
°
C (–40
°
to 149
°
F)
Battery performance features such as charge time, operating time, and life span can vary according to the conditions under which the computer and battery are used.
1-10 Dell Latitude XPi CD Service Manual
Table 1-2. Technical Specifications (Continued)
Battery (Continued)
NiCad reserve battery:
Voltage . . . . . . . . . . . . . . . . . .
7.2 V
Operating time
(approximate) . . . . . . . . . . . . .
2 minutes (if computer is in battery swap mode); 40 days (if power is turned off)
AC Adapter
Input voltage . . . . . . . . . . . . . . . . .
90 to 135 VAC and 164 to 264 VAC
Input current (maximum) . . . . . . .
1.2 A and 0.6 A
Input frequency . . . . . . . . . . . . . . .
47 to 63 Hz
Output current . . . . . . . . . . . . . . . .
4.5 A (maximum);
3.5 A (continuous)
Rated output voltage . . . . . . . . . . .
18.5 VDC
Height . . . . . . . . . . . . . . . . . . . . . .
27.94 mm (1.1 inches)
Width. . . . . . . . . . . . . . . . . . . . . . .
58.42 mm (2.3 inches)
Depth. . . . . . . . . . . . . . . . . . . . . . .
133.35 mm (5.25 inches)
Weight (with cables) . . . . . . . . . .
0.4 kg (0.89 lb)
Temperature range:
Operating . . . . . . . . . . . . . . . .
0
°
to 40
°
C (32
°
to 104
°
F)
Storage . . . . . . . . . . . . . . . . . .
-40
°
to 70
°
C (-40
°
to 158
°
F)
CD-ROM Drive
3
Disc size . . . . . . . . . . . . . . . . . . . .
8 cm and 12 cm (no adapter required)
Data transfer rate:
Sustained . . . . . . . . . . . . . . . . .
900 KB/sec (mode 2 disc)
Burst . . . . . . . . . . . . . . . . . . . .
14.4 MB/sec (PIO mode 3)
Seek time:
3
Random . . . . . . . . . . . . . . . . . .
200 m/sec
Full-stroke . . . . . . . . . . . . . . . .
500 m/sec
The CD-ROM drive in your computer may have different specifications .
System Overview 1-11
Table 1-2. Technical Specifications (Continued)
CD-ROM Drive
3
(Continued)
Access time:
Random . . . . . . . . . . . . . . . . .
250 m/sec
Full-stroke . . . . . . . . . . . . . . .
550 m/sec
Memory buffer . . . . . . . . . . . . . . .
128 KB
Physical (Computer)
Height . . . . . . . . . . . . . . . . . . . . . .
63.0 mm (2.48 inches)
Width . . . . . . . . . . . . . . . . . . . . . .
280.9 mm (11.06 inches)
Depth . . . . . . . . . . . . . . . . . . . . . .
233.5 mm (9.19 inches)
3
Weight (with battery and hard-disk drive) . . . . . . . . . . . . . .
3.29 kg (7.26 lb)
Environmental
Temperature:
Operating . . . . . . . . . . . . . . . .
10
° to 40
°
C (50
°
to 104
°
F)
Storage . . . . . . . . . . . . . . . . . .
-40
° to 65
°
C (-40
°
to 149
°
F)
Relative humidity (maximum):
Operating . . . . . . . . . . . . . . . .
90% (noncondensing)
Storage . . . . . . . . . . . . . . . . . .
95% (noncondensing)
Maximum vibration:
Operating . . . . . . . . . . . . . . . .
0.51 GRMS, using a random-vibration spectrum that simulates truck shipment
Storage . . . . . . . . . . . . . . . . . .
1.1 GRMS, using a random-vibration spectrum that simulates air/truck shipment
The CD-ROM drive in your computer may have different specifications.
1-12 Dell Latitude XPi CD Service Manual
Table 1-2. Technical Specifications (Continued)
Environmental (Continued)
Maximum shock: 4
Operating . . . . . . . . . . . . . . . .
152.4 cm/sec (60 inches/sec) (less than or equal to a pulse width of 2 ms)
Storage . . . . . . . . . . . . . . . . . .
203.2 cm/sec (80 inches/sec)
(less than or equal to a pulse width of 2 ms)
Altitude (maximum):
Operating . . . . . . . . . . . . . . . .
3048 m (10,000 ft)
Storage . . . . . . . . . . . . . . . . . .
10,600 m (35,000 ft)
4
Measured with the hard-disk drive in head-parked position.
System Overview 1-13
1-14 Dell Latitude XPi CD Service Manual
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