Automatic Ready Function Selection Register (Arsr) - Fujitsu MB90480 Series Hardware Manual

CHAPTER 7 MODE SETTING
7.4.1

Automatic ready function selection register (ARSR)

This section shows the configuration and explains the function of the automatic ready
function selection register (ARSR)
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Automatic ready function selection register (ARSR)
The bit configuration of the automatic ready function selection register (ARSR) is shown in the
figure below.
0000A5
Functions of each bit in the automatic ready function selection register (ARSR) are described
below.
[bit15, bit14] IOR1, IOR0
These bits are used to select the automatic wait function for external access to areas in a
range of 0000D0
IOR1
0
0
1
1
[bit13, bit12] HMR1, HMR0
These bits are used to select the automatic wait function for external access to areas in a
range of 800000
HMR1
0
0
1
1
162
15 14 13
IOR1 IOR0 HMR1 HMR0
H
( W ) ( W ) ( W ) ( W )
( 0 ) ( 0 ) ( 1 ) ( 1 )
to 0000FF . Contents of settings are listed below.
H H
IOR0
0 Automatic wait prohibited [Initial value]
1 Automatic wait in 1 machine cycle during external access
0 Automatic wait in 2 machine cycle during external access
1 Automatic wait in 3 machine cycle during external access
to FFFFFF . Contents of settings are listed below.
H H
HMR0
0 Automatic wait prohibited
1 Automatic wait in 1 machine cycle during external access
0 Automatic wait in 2 machine cycle during external access
Automatic wait in 3 machine cycle during external access
1
[Initial value]
12 11 10 9
LMR1
( - ) ( - ) ( W )
( - ) ( - ) ( 0 )
Setting
Setting
8
Automatic ready function
selection register
LMR0
( W ) Read/write
Initial value
( 0 )