Rainbow Electronics W90N745CDG User Manual
Page 3
W90N745CD/W90N745CDG
- II -
Table of Contents-
1.
GENERAL DESCRIPTION ......................................................................................................... 1
2.
FEATURES ................................................................................................................................. 2
3.
PIN DIAGRAM ............................................................................................................................ 7
4.
PIN ASSIGNMENT ..................................................................................................................... 8
5.
PIN DESCRIPTION................................................................................................................... 13
6.
FUNCTIONAL DESCRIPTION ................................................................................................. 24
6.1
ARM7TDMI CPU CORE ............................................................................................... 24
6.2
System Manager........................................................................................................... 25
6.2.1
Overview ........................................................................................................................25
6.2.2
System Memory Map......................................................................................................25
6.2.3
Address Bus Generation ................................................................................................28
6.2.4
Data Bus Connection with External Memory ..................................................................28
6.2.5
Bus Arbitration................................................................................................................37
6.2.6
Power Management .......................................................................................................38
6.2.7
Power-On Setting ...........................................................................................................41
6.2.8
System Manager Control Registers Map........................................................................41
6.3
External Bus Interface .................................................................................................. 56
6.3.1
EBI Overview..................................................................................................................56
6.3.2
SDRAM Controller ..........................................................................................................56
6.3.3
EBI Control Registers Map .............................................................................................60
6.4
Cache Controller........................................................................................................... 79
6.4.1
On-Chip RAM .................................................................................................................79
6.4.2
Non-Cacheable Area ......................................................................................................79
6.4.3
Instruction Cache............................................................................................................80
6.4.4
Data Cache ....................................................................................................................82
6.4.5
Write Buffer ....................................................................................................................84
6.4.6
Cache Control Registers Map.........................................................................................84
6.5
Ethernet MAC Controller............................................................................................... 92
6.5.1
EMC Functional Description ...........................................................................................93
6.5.2
EMC Register Mapping ................................................................................................103
6.6
GDMA Controller ........................................................................................................ 158
6.6.1
GDMA Functional Description ......................................................................................158
6.6.2
GDMA Register Map ....................................................................................................159
6.7
USB Host Controller ................................................................................................... 168
6.7.1
USB Host Functional Description .................................................................................168
6.7.2
USB Host Controller Registers Map .............................................................................169
6.8
USB Device Controller................................................................................................ 192
6.8.1
USB Endpoints .............................................................................................................192