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Device Initialization by ROM Code
Table 26-43. CHRAM (continued)
Description
Offset
Field
CH – Used in CH Process
CR – Used in Context Restore
0034h
SDRC_RFRCTRL_0 (LSB)
CH
CR
0036h
SDRC_RFRCTRL_0 (MSB)
CH
CR
CH
CR
0: SDRAM
1: Low-power SDR
0038h
Memory type (LSB)
2: DDR
3: Mobile DDR
4: Unknown
003Ah
Must be 0
CH
CR
003Ch
SDRC_MCFG_1 (LSB)
CH
CR
003Eh
SDRC_MCFG_1 (MSB)
CH
CR
0040h
SDRC_MR_1 (LSB)
CH
CR
0042h
SDRC_EMR1_1 (LSB)
CH
CR
0044h
SDRC_EMR2_1 (LSB)
CH
CR
0046h
SDRC_EMR3_1 (LSB)
CR
0048h
SDRC_ACTIM_CTRLA_1 (LSB)
CH
CR
004Ah
SDRC_ACTIM_CTRLA_1 (MSB)
CH
CR
004Ch
SDRC_ACTIM_CTRLB_1 (LSB)
CH
CR
004Eh
SDRC_ACTIM_CTRLB_1 (MSB)
CH
CR
0050h
SDRC_RFRCTRL_1 (LSB)
CH
CR
0052h
SDRC_RFRCTRL_1 (MSB)
CH
CR
0054h
Reserved, write 0s for future compatibility
CR
0056h
Reserved, write 0s for future compatibility
CR
CH
CR
[0]:
0: CS0 not configured
0058h
Flags
1: CS0 configured
[1]:
0: CS1 not configured
1: CS1 configured
005A
Must be 0
CH
CR
26.4.8.2.3 CHFLASH
The CHFLASH configuration header contains settings specific to the GPMC. For more information,
see
, GPMC, in
, Memory Subsystem.
lists the fields. The ROM code
configures the GPMC by default to these settings:
•
CS0
•
Asynchronous mode
•
Wait input enabled
•
Base address 08000000h
Table 26-44. CHFLASH
Offset
Field
Description
0000h
Section key
Key used for section verification: C0C0C0C3h
Enables/disables the section:
0004h
Valid
00h: Disable
Others: Enable
0005h
Reserved
3573
SWPU177N – December 2009 – Revised November 2010
Initialization
Copyright © 2009–2010, Texas Instruments Incorporated