2
TABLE OF CONTENTS
FEATURES.......................................................................................................................................................1
PIN CONFIGURATION....................................................................................................................................3
GENERAL DESCRIPTION...............................................................................................................................4
OVERVIEW......................................................................................................................................................4
PIN REQUIREMENTS......................................................................................................................................7
DESCRIPTION OF PIN FUNCTIONS..............................................................................................................9
BUFFER TYPES........................................................................................................................................... 17
FUNCTIONAL DESCRIPTION.......................................................................................................................21
INTERRUPT STRUCTURE............................................................................................................................32
RESET LOGIC..............................................................................................................................................33
POWERDOWN LOGIC................................................................................................................................ 34
PCMCIA ATTRIBUTE MEMORY: ADDRESS 0- 7FFEH............................................................................................ 35
PCMCIA CONFIGURATION REGISTERS: ADDRESS 8000-803EH............................................................................. 35
INTERNAL VS EXTERNAL ATTRIBUTE MEMORY MAP.................................................................................................. 36
THEORY OF OPERATION............................................................................................................................69
“MAGIC PACKET” SUPPORT..................................................................................................................................70
INTERNAL VS. EXTERNAL ATTRIBUTE MEMORY MAP........................................................................ 80
PCMCIA CONFIGURATION REGISTERS DESCRIPTION....................................................................... 82
FUNCTIONAL DESCRIPTION OF THE BLOCKS...................................................................................... 91
BOARD SETUP INFORMATION...............................................................................................................100
OPERATIONAL DESCRIPTION..................................................................................................................104
TIMING DIAGRAMS....................................................................................................................................108
Related Documentation
1. PCMCIA 2.1 Standard (for PCMCIA timing and functionality)
2. PCMCIA 3.X spec (for multi-function extensions)
3. AT&T HSM288xCF Modem Chip Set Data Sheet - July 5, 1994
4. Rockwell RC224ATF and C39 Modem Chip Sets Designer’s Guide