2
TABLE OF CONTENTS
FEATURES........................................................................................................................................1
GENERAL DESCRIPTION .................................................................................................................3
PIN CONFIGURATION.......................................................................................................................5
DESCRIPTION OF PIN FUNCTIONS .................................................................................................6
FUNCTIONAL DESCRIPTION............................................................................................................9
DMA OPERATION............................................................................................................................11
TRANSMIT DMA ..............................................................................................................................11
RECEIVE DMA.................................................................................................................................17
TRANSMIT/RECEIVE ARBITRATION FOR
C
ARD
B
US
BUS...............................................................25
BIG/LITTLE ENDIAN SUPPORT.......................................................................................................25
MAC O
PERATION
................................................................................................................................28
MAC R
ECEIVER
..................................................................................................................................28
MAC TRANSMITTER........................................................................................................................30
MII MANAGEMENT INTERFACE......................................................................................................32
EEPROM INTERFACE .....................................................................................................................32
POWER DOWN MODE....................................................................................................................34
JUMPER OPTIONS..........................................................................................................................34
SOFT RESET...................................................................................................................................34
CONFIGURATION ...........................................................................................................................35
M
APPING OF
ROM
AND
C
ONTROL
F
UNCTIONS
.........................................................................................35
R
EGISTER
M
AP
/C
ONTROL
R
EGISTER
D
ECODE
..........................................................................................37
REGISTER DESCRIPTIONS/CONTROL REGISTERS .....................................................................38
MODEM AND EXTERNAL FLASH RAM INTERFACE AND CONTROL...........................................64
MODEM REGISTERS MAP .............................................................................................................64
M
ODEM
R
EGISTERS
B
ITS
D
ESCRIPTION
...................................................................................................65
P
HYSICAL
C
ONNECTION
........................................................................................................................68
M
ODEM AND
RAM A
CCESS
T
IMING
.........................................................................................................68
OPERATIONAL DESCRIPTION.......................................................................................................69
M
AXIMUM
G
UARANTEED
R
ATINGS
...........................................................................................................69
DC E
LECTRICAL
C
HARACTERISTICS
........................................................................................................69
TIMING DIAGRAMS ........................................................................................................................71
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