SH7619 Datasheet, PDF (178/836 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7619 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 counter
3
CKS0
0
R/W ^(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. 5.00 Mar. 15, 2007 Page 140 of 794
REJ09B0237-0500