SH7618 Datasheet, PDF (170/646 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series

Section 7 Bus State Controller (BSC)
Initial
Bit
Bit Name Value R/W Description
7
CMF
0
R/W Compare Match Flag
Indicates that a compare match occurs between the
refresh timer counter (RTCNT) and refresh time constant
register (RTCOR).
[Clearing condition]
When 0 is written to this bit after reading RTCSR with
CMF = 1.
[Setting condition]
When RTCNT value matches RTCOR value
6

0
R
Reserved
This bit is always read as 0. The write value should
always be 0.
5
CKS2
0
R/W Clock Select
4
CKS1
0
R/W Select the clock input to count-up the refresh timer
3
CKS0
0
R/W ^{counter (RTCNT).}
000: Stop the counting-up
001: Bφ/4
010: Bφ/16
011: Bφ/64
100: Bφ/256
101: Bφ/1024
110: Bφ/2048
111: Bφ/4096
Rev. 6.00 Jun. 12, 2007 Page 138 of 610
REJ09B0131-0600