Preliminary
Basic Programming Model
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5.3.3 GPMC Configuration in NOR Mode
This section gives a generic configuration for parameters related to the NOR memory connected to the
GPMC.
through
list the steps to configure the GPMC in NOR mode.
NOTE:
In the tables of this section, 'x' in Value column stands for 'depends on configuration'.
Table 5-27. NOR Memory Type
Sub-process Name
Register / Bitfield
Value
Set the NOR protocol
GPMC_CONFIG1_i[11-10] DEVICETYPE
0
Set a device size
GPMC_CONFIG1_i[13-12] DEVICESIZE
x
Select an address and data multiplexing protocol
GPMC_CONFIG1_i[9] MUXADDDATA
x
GPMC_CONFIG1_i[24-23]
Set the attached device page length
x
ATTACHEDDEVICEPAGELENGTH
Set the wrapping burst capabilities
GPMC_CONFIG1_i[31] WRAPBURST
x
Select a timing signals latencies factor
GPMC_CONFIG1_i[4] TIMEPARAGRANULARITY
x
Select an output clock frequency
GPMC_CONFIG1_i[1-0] GPMCFCLKDIVIDER
x
Choose an output clock activation time
GPMC_CONFIG1_i[26-25] CLKACTIVATIONTIME
x
Set a single or multiple access for read operations
GPMC_CONFIG1_i[30] READMULTIPLE
x
Set a synchronous or asynchronous mode for read
GPMC_CONFIG1_i[29] READTYPE
x
operations
Set a single or multiple access for write operations
GPMC_CONFIG1_i[28] WRITEMULTIPLE
x
Set a synchronous or asynchronous mode for write
GPMC_CONFIG1_i[27] WRITETYPE
x
operations
Table 5-28. NOR Chip-Select Configuration
Sub-process Name
Register / Bitfield
Value
Select the chip-select base address
GPMC_CONFIG7_i[5-0] BASEADDRESS
x
Select the chip-select mask address
GPMC_CONFIG7_i[11-8] MASKADDRESS
x
Table 5-29. NOR Timings Configuration
Sub-process Name
Register / Bitfield
Value
Configure adequate timing parameters in various memory
See
modes
Table 5-30. WAIT Pin Configuration
Sub-process Name
Register / Bitfield
Value
Enable or disable wait pin monitoring for read operations
GPMC_CONFIG1_i[22] WAITREADMONITORING
x
Enable or disable wait pin monitoring for write operations
GPMC_CONFIG1_i[21] WAITWRITEMONITORING
x
GPMC_CONFIG1_i[19-18]
Select a wait pin monitoring time
x
WAITMONITORINGTIME
Choose the input wait pin for the chip-select
GPMC_CONFIG1_i[17-16] WAITPINSELECT
x
Table 5-31. Enable Chip-Select
Sub-process Name
Register / Bitfield
Value
When all parameters are configured, enable the chip-select
GPMC_CONFIG7_i[6] CSVALID
x
636 General-Purpose Memory Controller (GPMC)
SPRUGX9 – 15 April 2011
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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