PowerQUICC ProcessorsのトピックTWR-MPC8309 local bus https://community.nxp.com/t5/PowerQUICC-Processors/TWR-MPC8309-local-bus/m-p/257515#M418 <HTML><HEAD></HEAD><BODY><P>I am trying to determine if I can use the TWR-MPC8309 local bus to connect to a TWR-LCD module and to my custom peripherals. Looking at the schematic, they don't make sense to me:</P><P></P><P>- Data bits 0-7 seem to be reversed. MPC_LBC_D0 is hooked to bus D7, MPC_LBC_D7 is connected to bus D0, etc.</P><P>- Address bits are likely strange MPC address bits 25 downto 6 are connected to bus address bits 0 to 19. The address bit numbers don't even match.</P><P>- Shouldn't the signals on the backplane be connected to the multiplexed bus (the MPC_LBC_LAD* signals) instead of the demultiplexed signals?</P><P></P><P>Am I just missing something? I'm not seeing much documentation on the MPC8309 module, so I'm having to make a lot of guesses based on what I'm seeing in the schematics.</P></BODY></HTML> Mon, 27 May 2013 00:48:13 GMT bbutler 2013-05-27T00:48:13Z TWR-MPC8309 local bus https://community.nxp.com/t5/PowerQUICC-Processors/TWR-MPC8309-local-bus/m-p/257515#M418 <HTML><HEAD></HEAD><BODY><P>I am trying to determine if I can use the TWR-MPC8309 local bus to connect to a TWR-LCD module and to my custom peripherals. Looking at the schematic, they don't make sense to me:</P><P></P><P>- Data bits 0-7 seem to be reversed. MPC_LBC_D0 is hooked to bus D7, MPC_LBC_D7 is connected to bus D0, etc.</P><P>- Address bits are likely strange MPC address bits 25 downto 6 are connected to bus address bits 0 to 19. The address bit numbers don't even match.</P><P>- Shouldn't the signals on the backplane be connected to the multiplexed bus (the MPC_LBC_LAD* signals) instead of the demultiplexed signals?</P><P></P><P>Am I just missing something? I'm not seeing much documentation on the MPC8309 module, so I'm having to make a lot of guesses based on what I'm seeing in the schematics.</P></BODY></HTML> Mon, 27 May 2013 00:48:13 GMT https://community.nxp.com/t5/PowerQUICC-Processors/TWR-MPC8309-local-bus/m-p/257515#M418 bbutler 2013-05-27T00:48:13Z Re: TWR-MPC8309 local bus https://community.nxp.com/t5/PowerQUICC-Processors/TWR-MPC8309-local-bus/m-p/257516#M419 <HTML><HEAD></HEAD><BODY><P>Why not using MPC830x-TLCD <A href="http://www.freescale.com/zh-Hans/webapp/sps/site/prod_summary.jsp?code=MPC830X_TLCD" title="http://www.freescale.com/zh-Hans/webapp/sps/site/prod_summary.jsp?code=MPC830X_TLCD">MPC830x-TLCD LCD Display Module for the TWR-MPC830x Module 产品概述</A></P></BODY></HTML> Mon, 27 May 2013 09:40:13 GMT https://community.nxp.com/t5/PowerQUICC-Processors/TWR-MPC8309-local-bus/m-p/257516#M419 lunminliang 2013-05-27T09:40:13Z