Lattice Semiconductor MachXO2 Programming And Configuration Usage Manual page 31

Figure 17. sysCONFIG Preferences in Global Preferences Tab, Diamond Spreadsheet View
Configuration Mode and Port Options
The configuration and port options allow you to decide which configuration ports continue to operate after the
MachXO2 device is in user mode. You can also control the availability of status pins, as well as the speed at which
configuration data is read from an external PROM. The selections made here are saved in the Feature Row and
remain in effect until the Feature Row is erased. The only exception is the MCCLK_FREQ parameter, which is
stored in the configuration data.
The configuration and port options can be used in any combination.
Table 18. Configuration Mode/Port Options
Option Name
JTAG_PORT ENABLE
SLAVE_SPI_PORT DISABLE
MASTER_SPI_PORT DISABLE
I2C_PORT DISABLE
1, 2
SDM_PORT DISABLE
MCCLK_FREQ 2.08
ENABLE_TRANSFR DISABLE
1. The default for SDM_PORT was PROGRAMN in ispLEVER 8.1 SP1 and Diamond 1.1.
2. The 32 QFN package does not have an INITN pin. Because of this, the option SDM_PORT = PROGRAMN_DONE_INITN is not available.
MachXO2 Programming and Configuration Usage Guide
Default Setting
DISABLE, ENABLE
DISABLE, ENABLE
DISABLE, ENABLE, EFB_USR
DISABLE, ENABLE
DISABLE, PROGRAMN, PROGRAMN_DONE, PROGRAMN_DONE_INITN
See description below
DISABLE, ENABLE
All Settings
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