Preliminary
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Registers
5.5.16 GPMC_CONFIG6_i
WrAccessTime, WrDataOnADmuxBus, Cycle2Cycle, and BusTurnAround parameters configuration
Figure 5-66. GPMC_CONFIG6_i
31
29
28
24
23
20
19
16
Reserved
WRACCESSTIME
Reserved
WRDATAONADMUXBUS
R-0
R/W-0
R-0
R/W-0
15
12
11
8
Reserved
CYCLE2CYCLEDELAY
R-0
R/W-0
7
6
5
4
3
0
CYCLE2CYCLE
CYCLE2CYCLE
Reserved
BUSTURNAROUND
SAMECSEN
DIFFCSEN
R/W-0
R/W-0
R-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 5-71. GPMC_CONFIG6_i Field Descriptions
Bit
Field
Value
Description
31-29
Reserved
0
Reserved
28-24
WRACCESSTIME
Delay from StartAccessTime to the GPMC.FCLK rising edge corresponding the
the GPMC.CLK rising edge used by the attached memory for the first data
capture
0
0 GPMC_FCLK cycle
1h
1 GPMC_FCLK cycle
⋮
⋮
1Fh
31 GPMC_FCLK cycles
23-20
Reserved
0
Reserved
19-16
WRDATAONADMUXBUS
0-Fh
Specifies on which GPMC.FCLK rising edge the first data of the synchronous
burst write is driven in the add/data multiplexed bus
15-12
Reserved
0
Reserved
11-8
CYCLE2CYCLEDELAY
Chip select high pulse delay between two successive accesses
0
0 GPMC_FCLK cycle
1h
1 GPMC_FCLK cycle
⋮
⋮
Fh
15 GPMC_FCLK cycles
7
CYCLE2CYCLESAMECSEN
Add Cycle2CycleDelay between two successive accesses to the same
chip-select (any access type)
0
No delay between the two accesses
1
Add CYCLE2CYCLEDELAY
6
CYCLE2CYCLEDIFFCSEN
Add Cycle2CycleDelay between two successive accesses to a different
chip-select (any access type)
0
No delay between the two accesses
1
Add CYCLE2CYCLEDELAY
5-4
Reserved
0
Reserved
3-0
BUSTURNAROUND
Bus turn around latency between two successive accesses to the same
chip-select (read to write) or to a different chip-select (read to read and read to
write)
0
0 GPMC_FCLK cycle
1h
1 GPMC_FCLK cycle
⋮
⋮
Fh
15 GPMC_FCLK cycles
681
SPRUGX9 – 15 April 2011
General-Purpose Memory Controller (GPMC)
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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