FIC a440 Service Manual
Hardware Functional Overview
FIC A440 Series Service Manual
4-11
4.9
4.9
4.9
4.9 System
BIOS
System BIOS
System BIOS
System BIOS
The notebook utilizes the Phoenix BIOS 4.0 Release 6.0 (Basic I/O System) that contains
both the main system BIOS and the VGA BIOS with Shadow BIOS capability. It utilizes
Flash EPROM BIOS that allows instant erasing and programming without replacing the
EPROM chip.
The BIOS is stored in a 32-pin PLCC package FLASH ROM 29EE020 120ns with 4Mbit size
and is mounted into the motherboard. While posting the system, the Shadow RAM will be
enabled and the ROM will be disabled.
both the main system BIOS and the VGA BIOS with Shadow BIOS capability. It utilizes
Flash EPROM BIOS that allows instant erasing and programming without replacing the
EPROM chip.
The BIOS is stored in a 32-pin PLCC package FLASH ROM 29EE020 120ns with 4Mbit size
and is mounted into the motherboard. While posting the system, the Shadow RAM will be
enabled and the ROM will be disabled.
4.10
4.10
4.10
4.10 Video Subsystem
Video Subsystem
Video Subsystem
Video Subsystem
The video subsystem, integrated inside the North Bridge chip and the LCD panel, controls the
display output to both the LCD Panel screen and to the external VGA port.
display output to both the LCD Panel screen and to the external VGA port.
4.10.1 Video Chip Controller
The video subsystem utilizes the Trident CyberBladei1 VGA controller integrated inside the
North Bridge chip. CyberBladei1’s notebook graphics controller core incorporates high
performance 2D and 3D graphics engine, video accelerator, DVD playback, video capture and
TV output capabilities. It also eliminates the need for an external frame buffer by taking
advantage of the Shared Memory Architecture (SMA). For more information of the VGA
function, refer to the System Core Logic section of this chapter.
North Bridge chip. CyberBladei1’s notebook graphics controller core incorporates high
performance 2D and 3D graphics engine, video accelerator, DVD playback, video capture and
TV output capabilities. It also eliminates the need for an external frame buffer by taking
advantage of the Shared Memory Architecture (SMA). For more information of the VGA
function, refer to the System Core Logic section of this chapter.
4.10.2 Video Clock
ICWORK provides 14.318 MHz input to generate VGA internal slate machine, MCLK, and
DCLK. The VT82C686A chip also provides 32.768 KHz O/P for video RAM refresh.
DCLK. The VT82C686A chip also provides 32.768 KHz O/P for video RAM refresh.
4.11
4.11
4.11
4.11 I/O Subsystem
I/O Subsystem
I/O Subsystem
I/O Subsystem
The I/O (Input/Output) Subsystem of the notebook is integrated inside the South Bridge chip
VT82C686A on the motherboard. Refer to the System Core Logic section of this chapter.
VT82C686A on the motherboard. Refer to the System Core Logic section of this chapter.
4.12
4.12
4.12
4.12 PCMCIA Controller
PCMCIA Controller
PCMCIA Controller
PCMCIA Controller
The PCMCIA controller of the notebook is implemented on the motherboard using the TI
PCI1225 PC Card Controller. The TI PCI1225 is a high-performance PCI-to-PC Card
controller that supports two independent card sockets compliant with the 1997 PC Card
Standard. The PCI1225 provides a rich features set that makes it the best choice for bridging
between PCI and PC Cards in both notebook and desktop computers. The 1997 PC Card
Standard retains the 16-bit PC Card specification defined in PCMCIA Release 2.2 and defines
the new 32-bit PC Card (CardBus), capable of full 32-bit data transfers at 33MHz. The PCI-
1225 supports any combination of 16-bit and CardBus PC Cards in the two sockets, powered
at 5V or 3.3V, as required.
Feature Summary of the PCI1225:
PCI1225 PC Card Controller. The TI PCI1225 is a high-performance PCI-to-PC Card
controller that supports two independent card sockets compliant with the 1997 PC Card
Standard. The PCI1225 provides a rich features set that makes it the best choice for bridging
between PCI and PC Cards in both notebook and desktop computers. The 1997 PC Card
Standard retains the 16-bit PC Card specification defined in PCMCIA Release 2.2 and defines
the new 32-bit PC Card (CardBus), capable of full 32-bit data transfers at 33MHz. The PCI-
1225 supports any combination of 16-bit and CardBus PC Cards in the two sockets, powered
at 5V or 3.3V, as required.
Feature Summary of the PCI1225:
• PCI Bus Power Management Interface Specification 1.0 Compliant
• ACPI 1.0 Compliant
• Packaged in 208-pin low-profile QFP (PDV) or GHK High Density BGA
• PCI Local Bus Specification Revision 2.2 Compliant