Fujitsu MB91460 SERIES FR60 User Manual page 547

Figure 2-5 Structure of the Memory Setting Register (MCRB for FCRAM auto - precharge ON mode)
00000671 H
Address
The register serves as the area for making various settings for FCRAM connected to the chip select area for
which the access type (TYP3 to TYP0 bits) in the ACR6 and ACR7 registers has been set as in
Table 2-30 lists the access type settings (TYP3 to TYP0 bits).
Table 2-21 Access type settings (TYP3 to TYP0 bits)
TYP3 TYP2 TYP1
1 0 0
MCRB shares register hardware with MCRA. Updating the MCRB therefore updates the MCRA accordingly.
The functions are the same as MCRA. Note, however, that the function of the WBST bit is not available to this
TYPE setting.
(FCRAM supports neither burst read nor single write mode.)
2.6 I/O Wait Registers for DMAC (IOWR0-3)
This section explains the configuration and functions of the I/O wait registers for DMAC (IOWR0-
3).
■ Configuration of the I/O Wait Registers for DMAC (IOWR0-3)
The I/O wait registers for DMAC (IOWR0-3: I/O Wait Register for DMAC 0-3) set various kinds of waits during
DMA fly-by access.
Figure 2-6 "Configuration of the I/O wait registers for DMAC (IOWR0, 1, 2, 3)" shows the configuration of the I/O
wait registers for DMAC (IOWR0-3).
Figure 2-6 Configuration of the I/O Wait Registers for DMAC (IOWR0-3)
IOWR0 31
0000 0678 RYE0 HLD0 WR01 WR00 IW03
H
23
IOWR1
0000 0679 RYE1 HLD1 WR11 WR10 IW13
H
15
IOWR2
0000 067a RYE2 HLD2 WR21 WR20 IW23
H
7
IOWR3
0000 067b RYE3 HLD3 WR31 WR30 IW33
H
bit 23 22 21
PSZ2 PSZ1 PSZ0
Reserved
R/W R/W R/W
TYP0
1 Memory type B: FCRAM (used auto precharge)
30 29 28
22 21 20
14 13 12
6 5 4
20 19 18
WBST BANK ABS1 ABS0
R/W R/W R/W
Access type
27 26 25
IW02 IW01 IW00
19 18 17
IW12 IW11 IW10
11 10 9
IW22 IW21 IW20
3 2 1
IW32 IW31 IW30
Chapter 31 External Bus
2.External Bus Interface Registers
Initial value
17 16
XXXXXXXX B (INIT)
XXXXXXXX B (RST)
R/W R/W
Initial value
INIT RST
24
xxxxxxxx xxxxxxxx
b
16
xxxxxxxx xxxxxxxx
b
8
xxxxxxxx xxxxxxxx
b
0
xxxxxxxx xxxxxxxx
b
Table 2-30 .
Access
W/R
b
W/R
b
W/R
b
W/R
b
531