SMC Networks SMC91C95 - Manual (Page 2)

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 A
TTRIBUTE
M
EMORY
: A
DDRESS
0- 7FFE
H ............................................................................................ 35
PCMCIA C
ONFIGURATION
R
EGISTERS
: A
DDRESS
8000-803E
H ............................................................................. 35
I
NTERNAL
VS E
XTERNAL
A
TTRIBUTE
M
EMORY
M
AP .................................................................................................. 36
THEORY OF OPERATION ............................................................................................................................69
“M AGIC P ACKET ” S UPPORT .................................................................................................................................. 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