12. DDR2-SDRAM Interface (DBSC2)
Rev.1.00 Jan. 10, 2008 Page 508 of 1658
REJ09B0261-0100
Bit Bit
Name
Initial
Value R/W
Description
18
DIC_DQ
0
R/W
Data Pin Impedance value
This bit should be set to the same value as the value set
for DIC of EMRS(1) in the DDR2-SDRAM.
0: Normal
1: Weak
17
DIC_CK
0
R/W
Clock Pin Impedance value
This bit should be set to the same value as the value set
for DIC of EMRS(1) in the DDR2-SDRAM.
0: Normal
1: Weak
16
DIC
0
R/W
Impedance Value Set in the DIC of EMRS(1) in the
SDRAM
This bit should be set to the same value as the value set
for DIC of EMRS(1) in the DDR2-SDRAM.
0: Normal
1: Weak
15 to 13
⎯
All 0
R
Reserved
These bits are always read as 0. The write value should
always be 0.
If a value other than 0 is written, correct operation
cannot be guaranteed.
12, 11
ODTEN1
and
ODTEN0
00
R/W
ODT Output Mode Switch
These bits switch the ODT output mode.
For details on the note when the ODTEN bits are set to
01, refer to section 12.5.9, Important Information
Regarding ODT Control Signal Output to SDRAM.
00: The ODT pin is fixed low regardless of WRITE
command issue.
01: The ODT pin is fixed high when the WRITE
command is issued.
10 and 11: The ODT pin is fixed high regardless of
WRITE command issue.
Содержание SH7781
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Страница 762: ...14 Direct Memory Access Controller DMAC Rev 1 00 Jan 10 2008 Page 732 of 1658 REJ09B0261 0100 ...
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Страница 828: ...17 Power Down Mode Rev 1 00 Jan 10 2008 Page 798 of 1658 REJ09B0261 0100 ...
Страница 846: ...18 Timer Unit TMU Rev 1 00 Jan 10 2008 Page 816 of 1658 REJ09B0261 0100 ...
Страница 1292: ...24 Multimedia Card Interface MMCIF Rev 1 00 Jan 10 2008 Page 1262 of 1658 REJ09B0261 0100 ...
Страница 1326: ...25 Audio Codec Interface HAC Rev 1 00 Jan 10 2008 Page 1296 of 1658 REJ09B0261 0100 ...
Страница 1482: ...28 General Purpose I O Ports GPIO Rev 1 00 Jan 10 2008 Page 1452 of 1658 REJ09B0261 0100 ...
Страница 1538: ...30 User Debugging Interface H UDI Rev 1 00 Jan 10 2008 Page 1508 of 1658 REJ09B0261 0100 ...
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