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SDRAM Controller (SDRC) Subsystem
Bits
Field Name
Description
Type
Reset
31:8
RESERVED
Read returns 0.
R
0x000000
7:0
REV
IP revision code
R
See
(1)
[7:4]: Major revision
[3:0]: Minor revision
Examples: 0x10 for 1.0, 0x21 for 2.1
(1)
TI internal data
Table 10-154. Register Call Summary for Register SDRC_REVISION
SDRAM Controller (SDRC) Subsystem
•
:
•
Table 10-155. SDRC_SYSCONFIG
Address Offset
0x0000 0010
Physical Address
0x6D00 0010
Instance
SDRC
Description
This register controls the various parameters of the interconnect.
Type
RW
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
RESERVED
IDLEMODE
RESERVED
RESERVED
RESERVED
SOFTRESET
NOMEMORYMRS
Bits
Field Name
Description
Type
Reset
31:9
RESERVED
Write 0s for future compatibility
RW
0x000000
Read returns 0.
8
NOMEMORYMRS
No external memory MRS command
RW
0x0
0x0: When set to 0, the SDRC internal
and
registers (both CS) are written and MR, EMR2
commands are performed to the corresponding registers of the
external SDRAM.
0x1: When set to 1, only SDRC internal
and
registers (both CS) are written, no MR or EMR2
commands are performed to SDRAM.
7:5
RESERVED
Write 0s for future compatibility.
RW
0x0
Read returns 0.
4:3
IDLEMODE
Power management Req/Ack control
RW
0x2
0x0: Reserved - Do not use.
0x1: Reserved - Do not use.
0x2: Smart Idle - Acknowledgment to an idle request is based on the
internal activity of the module. Issued when the SDRC enters
self-refresh.
0x3: Reserved - Do not use.
2
RESERVED
Write 0s for future compatibility. Read returns 0
RW
0x0
1
SOFTRESET
Software reset
RW
0x0
0x0: Normal mode (no reset applied)
0x1: Software reset activated
0
RESERVED
Write 0s for future compatibility. Read returns 0.
RW
0x0
2315
SWPU177N – December 2009 – Revised November 2010
Memory Subsystem
Copyright © 2009–2010, Texas Instruments Incorporated