RX610 Group
11. Buses
R01UH0032EJ0120 Rev.1.20
Page 267 of 1006
Feb 20, 2013
11.3.3
CSi Mode Register (CSiMOD) (i = 0 to 7)
b4
b15
b8
b7
b3
b2
b1
b0
b14
b13
b12
b11
b10
b9
b6
b5
—
Addresses: 0008 3002h to 0008 3072h
PRMOD
—
—
—
—
—
PWENB PRENB
—
—
—
EWENB
—
—
WRMOD
Value after reset:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
Symbol
Bit Name
Description
R/W
b0
WRMOD
Write Access Mode Select
0: Byte strobe mode
1: Single write strobe mode
R/W
b2, b1
Reserved
These bits are always read as 0. The write value
should always be 0.
R/W
b3
EWENB
External Wait Enable
0: External wait is disabled
1: External wait is enabled
R/W
b7 to b4
Reserved
These bits are always read as 0. The write value
should always be 0.
R/W
b8
PRENB
Page Read Access Enable
0: Page read access is disabled
1: Page read access is enabled
R/W
b9
PWENB
Page Write Access Enable
0: Page write access is disabled
1: Page write access is enabled
R/W
b14 to b10
Reserved
These bits are always read as 0. The write value
should always be 0.
R/W
b15
PRMOD
Page Read Access Mode
Select
0: Normal access compatible mode
1: External data read continuous assertion mode
R/W
CSiMOD is used to set access modes of each area in the external address space.
WRMOD Bit (Write Access Mode Select)
This bit selects a write access operating mode.
Writing 0 to this bit selects byte strobe mode where data write operation is controlled by the WR0# and WR1# signals
corresponding to the respective byte positions.
Writing 1 to this bit selects single write strobe mode where data write operation is controlled by the BCi# (i = 1, 0)
signals and WR# signal corresponding to respective byte positions.
Table 11.8 shows whether the control signals are enabled or disabled in each write access mode.
Table 11.8 Control Signals for Write Access Mode
Write Access Mode
Data Write Signal
Byte Control Signal
WR0#
WR1#
WR#
BC0#
BC1#
Byte strobe mode
Enabled
Enabled
Disabled
Disabled
Disabled
Single write strobe mode
Disabled
Disabled
Enabled
Enabled
Enabled
Summary of Contents for RX600 Series
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