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DS33Z41 Quad IMUX Ethernet Mapper
2 of 167
TABLE OF CONTENTS
1
DESCRIPTION....................................................................................................................7
2
FEATURE HIGHLIGHTS ....................................................................................................8
2.1
G
ENERAL
......................................................................................................................................8
2.2
L
INK
A
GGREGATION
(I
NVERSE
M
ULTIPLEXING
) ...............................................................................8
2.3
HDLC ...........................................................................................................................................8
2.4
C
OMMITTED
I
NFORMATION
R
ATE
(CIR) C
ONTROLLER
.....................................................................8
2.5
X.86 S
UPPORT
..............................................................................................................................8
2.6
SDRAM I
NTERFACE
......................................................................................................................9
2.7
MAC I
NTERFACE
...........................................................................................................................9
2.8
M
ICROPROCESSOR
I
NTERFACE
......................................................................................................9
2.9
T
EST AND
D
IAGNOSTICS
................................................................................................................9
2.10
S
PECIFICATIONS COMPLIANCE
.....................................................................................................10
3
APPLICATIONS................................................................................................................11
4
ACRONYMS AND GLOSSARY........................................................................................12
5
MAJOR OPERATING MODES .........................................................................................13
6
BLOCK DIAGRAMS .........................................................................................................13
7
PIN DESCRIPTIONS.........................................................................................................14
7.1
P
IN
F
UNCTIONAL
D
ESCRIPTION
....................................................................................................14
8
FUNCTIONAL DESCRIPTION..........................................................................................22
8.1
P
ROCESSOR
I
NTERFACE
..............................................................................................................23
8.1.1
Read-Write/Data Strobe Modes..........................................................................................................23
8.1.2
Clear on Read.....................................................................................................................................23
8.1.3
Interrupt and Pin Modes......................................................................................................................23
8.2
C
LOCK
S
TRUCTURE
.....................................................................................................................24
8.2.1
Serial Interface Clock Modes..............................................................................................................26
8.2.2
Ethernet Interface Clock Modes .........................................................................................................26
8.3
R
ESETS AND
L
OW
-P
OWER
M
ODES
...............................................................................................27
8.4
I
NITIALIZATION AND
C
ONFIGURATION
............................................................................................28
8.5
G
LOBAL
R
ESOURCES
...................................................................................................................28
8.6
P
ER
-P
ORT
R
ESOURCES
...............................................................................................................28
8.7
D
EVICE
I
NTERRUPTS
....................................................................................................................29
8.8
S
ERIAL
I
NTERFACE
......................................................................................................................31
8.9
L
INK
A
GGREGATION
(IMUX).........................................................................................................31
8.9.1
Microprocessor Requirements............................................................................................................33
8.9.2
IMUX Command Protocol ...................................................................................................................34
8.9.3
Out of Frame (OOF) Monitoring..........................................................................................................36
8.9.4
Data Transfer ......................................................................................................................................36
8.10
C
ONNECTIONS AND
Q
UEUES
........................................................................................................37
8.11
A
RBITER
.....................................................................................................................................38
8.12
F
LOW
C
ONTROL
..........................................................................................................................39
8.12.1
Full-Duplex Flow Control.....................................................................................................................40
8.12.2
Half-Duplex Flow control.....................................................................................................................41
8.12.3
Host-Managed Flow control ................................................................................................................41
8.13
E
THERNET
I
NTERFACE
P
ORT
.......................................................................................................42
8.13.1
DTE and DCE Mode ...........................................................................................................................43