Standard Sed; One-Shot Sed - Lattice Semiconductor MachXO2 Series Usage Manual

Standard SED

The Standard SED operation can be used by instantiating the SEDFA primitive which is shown in Figure 2. The
primitive port definitions are listed in Table 1. See the Port Descriptions section of this document for more detailed
information about each of the ports.
If the Standard SED is done with the "R1" version of the MachXO2 devices, the first time the check is run a false
error will be reported. If a second check is done the correct result will be reported. The "R1" versions of the
MachXO2 devices have an "R1" suffix at the end of the part number, similar to LCMXO2-1200ZE-1TG144CR1. For
more details on the R1 to Standard migration refer to AN8086,
Standard (Non-R1) Devices.
Figure 2. SEDFA Primitive Symbol

One-Shot SED

The One-Shot SED operation can be used by instantiating the SEDFB primitive which is shown in Figure 3. The
definitions of the ports for the SEDFB primitive are shown in Table 1. See the Port Descriptions section of this doc-
ument for more detailed information about each of the ports.
The One-Shot SED is NOT supported on the "R1" version of the MachXO2 devices because a false error will
always be reported. The "R1" versions of the MachXO2 devices have an "R1" suffix at the end of the part number,
similar to LCMXO2-1200ZE-1TG144CR1.
Figure 3. SEDFB Primitive Symbol
SEDENABLE
SEDSTART
SEDFRCERR
SEDSTDBY
(From OSCH
Primitive)
SEDFB
Designing for Migration from MachXO2-1200-R1 to
SEDCLKOUT
SEDDONE
SEDFA
SEDINPROG
SEDERR
SEDCLKOUT
SEDDONE
SEDINPROG
SEDERR
3
MachXO2 SED Usage Guide