diff --git a/cocotbext/axi/axi_channels.py b/cocotbext/axi/axi_channels.py
new file mode 100644
index 0000000..d2c094e
--- /dev/null
+++ b/cocotbext/axi/axi_channels.py
@@ -0,0 +1,61 @@
+"""
+
+Copyright (c) 2020 Alex Forencich
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+"""
+
+from .stream import define_stream
+
+# Write address channel
+AxiAWTransaction, AxiAWSource, AxiAWSink, AxiAWMonitor = define_stream("AxiAW",
+    signals = ["awid", "awaddr", "awlen", "awsize", "awburst", "awprot", "awvalid", "awready"],
+    optional_signals = ["awlock", "awcache", "awqos", "awregion", "awuser"],
+    signal_widths = {"awlen": 8, "awsize": 3, "awburst": 2, "awlock": 1, "awcache": 4, "awprot": 3, "awqos": 4, "awregion": 4}
+)
+
+# Write data channel
+AxiWTransaction, AxiWSource, AxiWSink, AxiWMonitor = define_stream("AxiW",
+    signals = ["wdata", "wstrb", "wlast", "wvalid", "wready"],
+    optional_signals = ["wuser"],
+    signal_widths = {"wlast": 1}
+)
+
+# Write response channel
+AxiBTransaction, AxiBSource, AxiBSink, AxiBMonitor = define_stream("AxiB",
+    signals = ["bid", "bresp", "bvalid", "bready"],
+    optional_signals = ["buser"],
+    signal_widths = {"bresp": 2}
+)
+
+# Read address channel
+AxiARTransaction, AxiARSource, AxiARSink, AxiARMonitor = define_stream("AxiAR",
+    signals = ["arid", "araddr", "arlen", "arsize", "arburst", "arprot", "arvalid", "arready"],
+    optional_signals = ["arlock", "arcache", "arqos", "arregion", "aruser"],
+    signal_widths = {"arlen": 8, "arsize": 3, "arburst": 2, "arlock": 1, "arcache": 4, "arprot": 3, "arqos": 4, "arregion": 4}
+)
+
+# Read data channel
+AxiRTransaction, AxiRSource, AxiRSink, AxiRMonitor = define_stream("AxiR",
+    signals = ["rid", "rdata", "rresp", "rlast", "rvalid", "rready"],
+    optional_signals = ["ruser"],
+    signal_widths = {"rresp": 2, "rlast": 1}
+)
+
diff --git a/cocotbext/axi/axil_channels.py b/cocotbext/axi/axil_channels.py
new file mode 100644
index 0000000..704b7cb
--- /dev/null
+++ b/cocotbext/axi/axil_channels.py
@@ -0,0 +1,55 @@
+"""
+
+Copyright (c) 2020 Alex Forencich
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+"""
+
+from .stream import define_stream
+
+# Write address channel
+AxiLiteAWTransaction, AxiLiteAWSource, AxiLiteAWSink, AxiLiteAWMonitor = define_stream("AxiLiteAW",
+    signals = ["awaddr", "awprot", "awvalid", "awready"],
+    signal_widths = {"awprot": 3}
+)
+
+# Write data channel
+AxiLiteWTransaction, AxiLiteWSource, AxiLiteWSink, AxiLiteWMonitor = define_stream("AxiLiteW",
+    signals = ["wdata", "wstrb", "wvalid", "wready"]
+)
+
+# Write response channel
+AxiLiteBTransaction, AxiLiteBSource, AxiLiteBSink, AxiLiteBMonitor = define_stream("AxiLiteB",
+    signals = ["bresp", "bvalid", "bready"],
+    signal_widths = {"bresp": 2}
+)
+
+# Read address channel
+AxiLiteARTransaction, AxiLiteARSource, AxiLiteARSink, AxiLiteARMonitor = define_stream("AxiLiteAR",
+    signals = ["araddr", "arprot", "arvalid", "arready"],
+    signal_widths = {"arprot": 3}
+)
+
+# Read data channel
+AxiLiteRTransaction, AxiLiteRSource, AxiLiteRSink, AxiLiteRMonitor = define_stream("AxiLiteR",
+    signals = ["rdata", "rresp", "rvalid", "rready"],
+    signal_widths = {"rresp": 2}
+)
+