Specifications

272 www.xilinx.com Embedded System Tools Guide (EDK 6.2i)
1-800-255-7778 UG111 (v1.4) January 30, 2004
Chapter 16: Microprocessor Peripheral Description (MPD)
R
generic (C_WIDTH: integer:= 9);
port (
-- tri-state signal
tristate_I: in std_logic_vector(0 to C_WIDTH-1);
tristate_O: out std_logic_vector(0 to C_WIDTH-1);
tristate_T: out std_logic);
end entity tri_state_single;
MPD 3-state (InOut) With Single-Bit Enable Example
The following is a MPD example that includes 3-state signal with a single-bit enable:
BEGIN tri_state_single
OPTION IPTYPE=IP
PARAMETER C_WIDTH = 9, DT=integer
PORT tristate = “”, DIR=INOUT, VEC=[0:C_WIDTH-1], ENABLE=SINGLE, THREE_STATE=TRUE
END