
User’s Manual U14272EJ3V0UM
11
PREFACE
Readers
This manual targets users who intend to understand the functions of the V
R
4181 and
to design application systems using this microprocessor.
Purpose
This manual introduces the hardware functions of the V
R
4181 to users, following the
organization described below.
Organization
Two manuals are available for the V
R
4181: Hardware User’s Manual (this manual)
and Architecture User’s Manual common to the V
R
4100 Series
TM
.
Hardware
User’s Manual
Architecture
User’s Manual
Pin functions
Physical address space
Function of Coprocessor 0
Initialization interface
Peripheral units
Pipeline operation
Cache organization and memory
management system
Exception processing
Interrupts
Instruction set
How to read this manual
It is assumed that the reader of this manual has general knowledge in the fields of
electric engineering, logic circuits, microcomputers, and SDRAMs.
To learn about the overall functions of the V
R
4181,
→
Read this manual in sequential order.
To learn about instruction sets,
→
Read
V
R
4100 Series Architecture User’s Manual
that is separately
available.
To learn about electrical specifications,
→
Refer to
Data Sheet
that is separately available.
Conventions
Data significance:
Active low:
Note
:
Caution
:
Remark
:
Numeric representation:
Higher on left and lower on right
XXX# (trailing # after pin and signal names)
Description of item marked with
Note
in the text
Information requiring particular attention
Supplementary information
binary/decimal ... XXXX
hexadecimal ... 0xXXXX
Prefixes representing an exponent of 2 (for address space or memory capacity):
K (kilo) …
M (mega) … 2
G (giga) …
T (tera) …
P (peta) …
E (exa) …
2
10
= 1024
20
= 1024
30
= 1024
40
= 1024
50
= 1024
60
= 1024
2
2
2
2
2
3
4
5
6