Chapter 10 Memory Subsystem.pdf

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www.ti.com General-Purpose Memory Controller
Bits Field Name Description Type Reset
22:20 RESERVED Write 0s for future compatibility. Read returns 0s. RW 0x0
19:16 WEONTIME nWE assertion time from start cycle time RW 0x3
0x0: 0 GPMC_FCLK cycle
0x1: 1 GPMC_FCLK cycle
...
0xF: 15 GPMC_FCLK cycles
15:13 RESERVED Write 0s for future compatibility. Read returns 0s. RW 0x0
12:8 OEOFFTIME nOE de-assertion time from start cycle time RW 0x10
0x00: 0 GPMC_FCLK cycle
0x01: 1 GPMC_FCLK cycle
...
0x1F: 31 GPMC_FCLK cycles
7 OEEXTRADELAY nOE Add Extra Half GPMC_FCLK cycle RW 0x0
0x0: nOE Timing control signal is not delayed
0x1: nOE Timing control signal is delayed of half GPMC_FCLK
clock cycle
6:4 RESERVED Write 0s for future compatibility. Read returns 0s. RW 0x0
3:0 OEONTIME nOE assertion time from start cycle time RW 0x3
0x0: 0 GPMC_FCLK cycle
0x1: 1 GPMC_FCLK cycle
...
0xF: 15 GPMC_FCLK cycles
Table 10-56. Register Call Summary for Register GPMC_CONFIG4_i
General-Purpose Memory Controller
• Timing Setting: [0] [1] [2] [3] [4] [5]
• Asynchronous Access Description: [6] [7] [8] [9] [10] [11]
• Synchronous Access: [12] [13] [14] [15] [16] [17]
• NAND Device Basic Programming Model: [18]
• GPMC Register Summary: [19]
Table 10-57. GPMC_CONFIG5_i
Address Offset 0x0000 0070 + (0x0000 0030 * i) Index i = 0 to 7
Physical Address 0x6E00 0070 + (0x0000 0030 * i) Instance GPMC
Description RdAccessTime and CycleTime timing parameters configuration
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 RDACCESSTIME WRCYCLETIME RDCYCLETIME
PAGEBURSTACCESSTIME
RESERVED
Bits Field Name Description Type Reset
31:28 RESERVED Write 0s for future compatibility. Read returns 0s. RW 0x0
27:24 PAGEBURSTACCESSTIME Delay between successive words in a multiple access RW 0x1
0x0: 0 GPMC_FCLK cycle
0x1: 1 GPMC_FCLK cycle
...
0xF: 15 GPMC_FCLK cycles
SPRUGN4L–May 2010–Revised June 2011 Memory Subsystem
RESERVED
Copyright © 2010–2011, Texas Instruments Incorporated
RESERVED
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