topic How many devices can be handled by PCI express controller of p2041 in P-Series https://community.nxp.com/t5/P-Series/How-many-devices-can-be-handled-by-PCI-express-controller-of/m-p/681445#M4156 <HTML><HEAD></HEAD><BODY><P>P2041 is having 3 PCI express controller </P><P>I am using PEX2 (PCI Express Controller 2)</P><P>Is there any limit of number of PCI devices that can be connected to PCI Express controller</P><P>or we can connect any number of devices using switches and bridges</P><P></P><P></P><P>Thanks and regards</P></BODY></HTML> Fri, 09 Jun 2017 06:21:04 GMT sameerarvikar 2017-06-09T06:21:04Z How many devices can be handled by PCI express controller of p2041 https://community.nxp.com/t5/P-Series/How-many-devices-can-be-handled-by-PCI-express-controller-of/m-p/681445#M4156 <HTML><HEAD></HEAD><BODY><P>P2041 is having 3 PCI express controller </P><P>I am using PEX2 (PCI Express Controller 2)</P><P>Is there any limit of number of PCI devices that can be connected to PCI Express controller</P><P>or we can connect any number of devices using switches and bridges</P><P></P><P></P><P>Thanks and regards</P></BODY></HTML> Fri, 09 Jun 2017 06:21:04 GMT https://community.nxp.com/t5/P-Series/How-many-devices-can-be-handled-by-PCI-express-controller-of/m-p/681445#M4156 sameerarvikar 2017-06-09T06:21:04Z Re: How many devices can be handled by PCI express controller of p2041 https://community.nxp.com/t5/P-Series/How-many-devices-can-be-handled-by-PCI-express-controller-of/m-p/681446#M4157 <HTML><HEAD></HEAD><BODY><P>According to the PCI Express Specification a device's location for a PCIe controller is specified by an 8-bit bus number, a 5-bit device number and a 3-bit function number.</P></BODY></HTML> Fri, 09 Jun 2017 07:00:57 GMT https://community.nxp.com/t5/P-Series/How-many-devices-can-be-handled-by-PCI-express-controller-of/m-p/681446#M4157 ufedor 2017-06-09T07:00:57Z Re: How many devices can be handled by PCI express controller of p2041 https://community.nxp.com/t5/P-Series/How-many-devices-can-be-handled-by-PCI-express-controller-of/m-p/681447#M4158 <HTML><HEAD></HEAD><BODY><P>As per P2041 reference manual (Table 24.1 and Table 24.3)</P><P>PEX2(PCI express controller )</P><P>INTA has got Interrupt number 25</P><P>INTB has IRQ5,</P><P>INTC has IRQ6</P><P>INTD has IRQ7</P><P></P><P>So does that mean it can support only 4 pci devices ?</P></BODY></HTML> Fri, 09 Jun 2017 09:22:01 GMT https://community.nxp.com/t5/P-Series/How-many-devices-can-be-handled-by-PCI-express-controller-of/m-p/681447#M4158 sameerarvikar 2017-06-09T09:22:01Z Re: How many devices can be handled by PCI express controller of p2041 https://community.nxp.com/t5/P-Series/How-many-devices-can-be-handled-by-PCI-express-controller-of/m-p/681448#M4159 <HTML><HEAD></HEAD><BODY><P>PCIe devices use MSI interrupts.</P></BODY></HTML> Fri, 09 Jun 2017 10:25:18 GMT https://community.nxp.com/t5/P-Series/How-many-devices-can-be-handled-by-PCI-express-controller-of/m-p/681448#M4159 ufedor 2017-06-09T10:25:18Z