memory interface 122 memory interface 122 is provided for managing local memory local dma module 137 a is used for gaining access to a channel to move data from local memory 108 110 adapter 106 also includes a serial de serializer shown as u201c xgxs serdes u201d 136 for converting data from 10 bit to 8 bit format and vice versa adapter 106 also includes request queue dma channel 0 130 response queue 0 dma channel 131 response queue 1 132 a and request queue 1 dma channel 132 and a command dma channel 133 for managing command information dma channels are coupled to an arbiter module not shown that receives requests and grants access to a certain channel both receive and transmit paths have dma modules u201c rcv data dma u201d 129 a and 129 b and u201c xmt data dma u201d 135 that are used to gain access to a channel for data transfer in the receive transmit paths transmit path also has a scheduler 134 that is coupled to processor 112 and schedules transmit operations pci master interface 107 a and pci target interface 107 b are both coupled to a pci express core logic 137 may also be referred to as u201c logic 137 u201d interface 107 a and 107 b includes an arbitration module that processes dma access to plural dma channels fig2 a shows a block diagram with certain components of logic 137 that.