OSERDESE3 Attributes - OSERDESE3 Attributes - UG861

Spartan UltraScale+ FPGAs SelectIO Resources User Guide (UG861)

Document ID
UG861
Release Date
2026-04-28
Revision
1.1 English

The following table lists the OSERDESE3 attributes.

Table 1. OSERDESE3 Attributes
Attribute Values Default Type Description
DATA_WIDTH 4 or 8 8 Decimal Defines the parallel-to-serial data converter width.
INIT 1 or 0 0 Binary Initializes the OSERDESE3 flip-flops to the value specified.
ODDR_MODE TRUE/FALSE FALSE String Internal property set by the Vivado tools when using ODDRE1. Do not modify. Forces the OSERDESE3 into an ODDRE1 mode with a 3-state ODDRE1 flip-flop as shown in ODDR with Serialized 3-State. In the ODDRE1 mode, data is connected to D[4,0] and the clock must be connected to CLK. The ODDRE1 primitive is recommended.
OSERDES_D_BYPASS TRUE/FALSE FALSE String

When TRUE, D[0] is passed onto OQ.

When FALSE, serialized D[0] and D[4] is output on OQ.

OSERDES_T_BYPASS TRUE/FALSE FALSE String

When TRUE, D[1] is passed onto T_OUT.

When FALSE, serialized D[1] and D[5] is output on T_OUT.

IS_CLK_INVERTED 1 or 0 0 Bit Sets a local clock inversion for CLK input when 1.
IS_CLKDIV_INVERTED 1 or 0 0 Bit Sets a local clock inversion for CLKDIV input when 1.
IS_RST_INVERTED 1 or 0 0 Bit Sets a local inversion for RST input when 1.
SIM_DEVICE ULTRASCALE_PLUS ULTRASCALE String Device family for behavioral simulation.