Memory Setting Register (Mcrb For Fcram Auto-Precharge On Mode) - Fujitsu FR60 Hardware Manual

4.2.5 Memory Setting Register
(MCRB for FCRAM auto-precharge ON mode)
This section describes the memory setting register (MCRB for FCRAM auto-precharge
ON mode).
■ Structure of the Memory Setting Register (MCRB for FCRAM Auto-precharge ON Mode)
Settings for Memory configuration register (MCRB: Memory Configuration Register for extend
type-B for FCRAM auto-precharge ON mode) is used to make various settings for FCRAM
connected to the chip select area.
Figure 4.2-5 shows the bit configuration of the memory setting register (MCRB for FCRAM auto-
precharge ON mode).
Figure 4.2-5 Structure of the Memory Setting Register (MCRB for FCRAM Auto-precharge ON Mode)
bit
Address 000671
H
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 4.2-30.
Table 4.2-30 lists the access type settings (TYP3 to TYP0 bits).
Table 4.2-30 Access Type Settings (TYP3 to TYP0 Bits)
TYP3
1
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 TYP setting.
(FCRAM supports neither burst read nor single write mode.)
23 22 21 20
PSZ2 PSZ1 PSZ0 WBST BANK ABS1 ABS0 XXXXXXXX
Reserved
TYP2 TYP1 TYP0
0 0 1
CHAPTER 4 EXTERNAL BUS INTERFACE
19 18 17 16
Access type
Memory type B: FCRAM (used auto precharge)
Initial value Access
(INIT)
R/W
B
XXXXXXXX (RST)
B
169