SH7125 Datasheet, PDF (609/782 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer

Section 17 Flash Memory
(5) Flash Transfer Destination Address Register (FTDAR)
FTDAR specifies the on-chip RAM address to which the on-chip program is downloaded.
Make settings for FTDAR before writing 1 to the SCO bit in FCCS. The initial value is H'00
which points to the start address (H'FFFFA000) in on-chip RAM.
Bit: 7
6
5
4
3
2
1
0
TDER
TDA[6:0]
Initial value: 0
0
0
0
0
0
0
0
R/W: R/W R/W R/W R/W R/W R/W R/W R/W
Initial
Bit
Bit Name Value
7
TDER
0
6 to 0 TDA[6:0] All 0
R/W Description
R/W Transfer Destination Address Setting Error
This bit is set to 1 when there is an error in the
download start address set by bits 6 to 0 (TDA6 to
TDA0). Whether the address setting is erroneous or not
is tested by checking whether the setting of TDA6 to
TDA0 is between the range of H'02 to H'04 after setting
the SCO bit in FCCS to 1 and performing download.
Before setting the SCO bit to 1 be sure to set the
FTDAR value between H'02 to H'04 as well as clearing
this bit to 0.
0: Setting of TDA6 to TDA0 is normal
1: Setting of TDER and TDA6 to TDA0 is H'00 to H'01
and H'05 to H'FF and download has been aborted
R/W Transfer Destination Address
These bits specify the download start address. A value
from H'02 to H'04 can be set to specify the download
start address in on-chip RAM in 2-kbyte units.
A value H'00, H'01, or H'05 to H'7F cannot be set. If
such a value is set, the TDER bit (bit 7) in this register
is set to 1 to prevent download from being executed.
H'02: Download start address is set to H'FFFFA000
H'03: Download start address is set to H'FFFFA800
H'04: Download start address is set to H'FFFFB000
H'00, H'01, H'05 to H'7F: Setting prohibited. If this value
is set, the TDER bit (bit 7) is
set to 1 to abort the download
processing.
Rev. 3.00 Sep. 27, 2007 Page 589 of 758
REJ09B0243-0300