LCMXO2280C-M-EVN Lattice, LCMXO2280C-M-EVN Datasheet - Page 22

• Manufacturer Part Number: LCMXO2280C-M-EVN
• Description: Microcontroller Modules & Accessories MachXO Mini Dev Kit
• Manufacturer: Lattice
• Series: MachXOr
• Type: PLDr

Specifications of LCMXO2280C-M-EVN

• Silicon Manufacturer: Lattice
• Silicon Core Number: LCMXO2280C-4TN144C
• Silicon Family Name: MachXO
• Rohs Compliant: Yes
• Contents: Board, Cables, Documentation
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: LCMXO2280C-3FTN256C

Lattice Semiconductor
Figure 2-15. MachXO2 Output Register Block Diagram (PIO on the Right Edges)
Tri-state Register Block
The tri-state register block registers tri-state control signals from the core of the device before they are passed to
the sysIO buffers. The block contains a register for SDR operation. In SDR, TD input feeds one of the flip-flops that
then feeds the output.
The tri-state register blocks on the right edge contain an additional register for DDR memory operation. In DDR
memory mode, the register TS input is fed into another register that is clocked using the DQSW90 signal. The out-
put of this register is used as a tri-state control.
Input Gearbox
Each PIC on the bottom edge has a built-in 1:8 input gearbox. Each of these input gearboxes may be programmed
as a 1:7 de-serializer or as one IDDRX4 (1:8) gearbox or as two IDDRX2 (1:4) gearboxes. Table 2-9 shows the
gearbox signals.
Table 2-9. Input Gearbox Signal List
D
ALIGNWD
SCLK
ECLK[1:0]
RST
Q[7:0]
DQSW90
SCLK
D0
D1
TD
Name
D Q
I/O Type
Output
Input
Input
Input
Input
Input
D Q
D/L Q
D/L Q
Q1
Q0
2-18
High-speed data input after programmable delay in PIO A
input register block
Data alignment signal from device core
Slow-speed system clock
High-speed edge clock
Reset
Low-speed data to device core:
Video RX(1:7): Q[6:0]
GDDRX4(1:8): Q[7:0]
GDDRX2(1:4)(IOL-A): Q4, Q5, Q6, Q7
GDDRX2(1:4)(IOL-C): Q0, Q1, Q2, Q3
T0
D Q
MachXO2 Family Data Sheet
Description
Output Register Block
Tristate Register Block
Q
Architecture
TQ