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06-07-08-09-SystemOnChip/AhbLiteComponents/hdl/ahbUart_studentVersion.vhd

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+--==============================================================================
+--
+-- AHB UART
+--
+-- Implements a serial port.
+--
+--------------------------------------------------------------------------------
+--
+-- Write registers
+--
+-- 00, data register receives the word to be sent to the serial port.
+-- 01, control register is used to control the peripheral.
+-- 02, scaler register is used to set the baud rate.
+--
+--------------------------------------------------------------------------------
+--
+-- Read registers
+-- 00, data register provides the last word received by the serial port.
+-- 01, status register is used to get the peripheral's state.
+--     bit 0: data ready for read
+--     bit 1: sending in progress
+--     bit 2: receiving in progress
+--
+ARCHITECTURE studentVersion OF ahbUart IS
+BEGIN
+
+  -- AHB-Lite
+  hRData  <=	(OTHERS => '0');
+  hReady  <=	'0';	
+  hResp	  <=	'0';	
+
+  -- Serial
+  TxD <= '0';
+
+END ARCHITECTURE studentVersion;
+