Add Wishbone datasheet to RS232 UART

diff --git a/libraries/rs232/rs232_uart.vhd b/libraries/rs232/rs232_uart.vhd
index 69ce1a3e7376697b6cbf36ae7d59496eab4552b0..04c6c75a32a230d8dc535396a39560c9d7e94c80 100644 (file)
--- a/libraries/rs232/rs232_uart.vhd
+++ b/libraries/rs232/rs232_uart.vhd
@@ -74,6 +74,26 @@
 -- TODO: Detect and generate break conditions
 -- TODO: Add framing checks
 --------------------------------------------------------------------------------
+-- WISHBONE DATASHEET
+--
+-- Wishbone specification used: Rev B.3
+-- Interface type: device
+-- Port size: 8-bit
+-- Operand sizes: 8-bit
+-- Endianness: undefined (port size same as granularity)
+-- Data transfer sequence: undefined
+-- Clock constraints: none
+-- Signals:
+-- * rst_i
+-- * clk_i
+-- * cyc_i
+-- * stb_i
+-- * we_i
+-- * ack_o
+-- * adr_i (3-bit)
+-- * dat_i (8-bit)
+-- * dat_o (8-bit)
+--------------------------------------------------------------------------------
 
 library ieee;
 use ieee.std_logic_1164.all;