Compaq iPAQ Internet Device Manual De Usuario
Technical Reference Guide
Compaq iPAQ Family of Internet Devices
First Edition - March 2000
2-13
2.4.3 SUPPORT
COMPONENTS
Input/output functions not provided by the chipset are handled by other support components.
Some of these components also provide “housekeeping” and various other functions as well.
Table 2-4 shows the functions provided by the support components.
Some of these components also provide “housekeeping” and various other functions as well.
Table 2-4 shows the functions provided by the support components.
Table 2-4.
Support Component Functions
Table 2-4.
Support Component Functions
Component Name
Function
Notes
LPC47B277 I/O Controller
Keyboard and pointing device I/F
Diskette I/F
Serial I/F
Parallel I/F
AGP, PCI reset generation
ISA serial IRQ converter
Power button logic
Slow speed detection
S3 regulator controller
GPIO ports
Diskette I/F
Serial I/F
Parallel I/F
AGP, PCI reset generation
ISA serial IRQ converter
Power button logic
Slow speed detection
S3 regulator controller
GPIO ports
[1]
[2]
[1]
[1]
[2]
[1]
[1]
AD1881 Audio Codec
Audio mixer
Digital-to-analog converter
Analog-to-digital converter
Analog I/O:
Mic input
Line input
CD input
Line output
Digital-to-analog converter
Analog-to-digital converter
Analog I/O:
Mic input
Line input
CD input
Line output
82559 Ethernet Controller [1]
Network interface controller
PHY interface
PHY interface
NOTE:
[1] Implemented on legacy-light models only.
[2] Not available for actual use but may be enabled to satisfy OS requirements.
[2] Not available for actual use but may be enabled to satisfy OS requirements.
2.4.4 SYSTEM
MEMORY
These systems utilize Synchronous DRAM (PC100 SDRAM, non-ECC only). Two DIMM
sockets are provided and accessible through an access opening once the right side cover has been
removed.
sockets are provided and accessible through an access opening once the right side cover has been
removed.