Acer Extensa 670 Service Guide

4-12Theory of OperationFigure 4-6M6377 Chip Pinouts 

Service Guide4-13 4.3.6 C&T 65550 High Performance Flat Panel / CRT VGA Controller
The C&T 65550 of high performance multimedia flat panel / CRT GUI accelerators extend CHIPS’
offering of high-performance flat panel controllers for full-featured notebooks and sub-notebooks.
The C&T 65550 offers 64-bit high performance and new hardware multimedia support features.
High Performance
Based on a totally new internal architecture, the C&T65550 integrates a powerful 64-bit graphics
accelerator engine for Bit...

4-14Theory of Operation The pin diagram is shown in Figure 4-7.  Pin names in parentheses (…) indicate alternate functions.Figure 4-7C&T65550 Chip Pinouts 

Service Guide4-15 A simplified block diagram of the C&T65550 is shown in Figure 4-8.Memory ControllerScalingCapture64-bit
Graphics
EngineYUV to RGB
Color Key ZoomBus InterfaceVideo
Capture
PortPCI BusAnalog
RGBDigital
RGBVideo MemoryFigure 4-8C&T65550 Chip Simplified Block Diagram 

4-16Theory of Operation 4.3.7 TI1130 PCMCIA Controller
The TI PCI1130 is a high-performance PCI-to-PC Card controller that supports two independent PC
Card sockets compliant with the 1995 PC Card standard.  The PCI1130 provides a set of features
that make it ideal for bridging between PCI and PC Cards in both notebook and desktop computers.
The 1995 PC Card standard retains the 16-bit PC Card specification defined in PCMCIA release 2.1
and defines the new 32-bit PC Card, called CardBUs, capable of full...

Service Guide4-17Figure 4-10TI1130 Chip PCI-to-CardBus (32-bit) Pinouts 

4-18Theory of Operation A simplified block diagram of the PCMCIA Controller is shown in Figure 4-11.Figure 4-11TI1130 Chip Simplified Block Diagram 

Service Guide4-19 4.3.8 NS87336VJG Super I/O Controller
The PC87336VJG is a single chip solution for most commonly used I/O periherals in ISA< and EISA
based comptuers.  It incorporates a Floppy Disk Controller (FDC), two full featured UARTS, and an
IEEE 1284 compatible parallel port Standard PC-AT address decoding for all the peripherals and a
set of configuration registers are also implemented in this highly integrated member of the Super I/O
family.  Advanced power management features, mixed voltage...

4-20Theory of Operation · Extended Capabilitie Port (ECP) compatible, including level 2 support
· Bidirectional under either software or hardware control
· Compatible with ISA and EISA architectures
· Ability to multiplex FDC signals on parallel port pins allows use of an external Floppy
Disk Drive (FDD)
· Includes protection circuit to prevent damage to the parallel port when a connected
printer is powered up or is operated at a higher voltage
· UARTs:
· Software compatible with the PC16550A and...

Service Guide4-21 The pin diagram is shown in Figure 4-12.Figure 4-12NS87336VJG Chip Pinouts