Universal Serial Bus InterfaceMCF5253 Reference Manual, Rev. 1Freescale Semiconductor 24-3924.6.3.17 Endpoint Initialization Register (ENDPTPRIME)—Non-EHCIThis register is not defined in the EHCI specification. This register is used to initialize endpoints. It is usedby the USB OTG module only in device mode.Address MBAR2 0x7AC Access: User read/write31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16RWReset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 015 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0R ENDPTSETUPSTATWReset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0Figure 24-28. Endpoint Setup Status (ENDPTSETUPSTAT) RegisterTable 24-30. Endpoint Setup Status (ENDPTSETUPSTAT) Register Field DescriptionsField Description31–4 Reserved.3–0ENDPTSETUPSTATSetup Endpoint Status. For every setup transaction that is received, a corresponding bit in this registeris set. The software must clear or acknowledge the setup transfer by writing a one to a respective bit afterit has read the setup data from Queue head. The response to a setup packet as in the order of operationsand total response time is crucial to limit bus time outs while the setup lockout mechanism is engaged.This register is used only in device mode.Address MBAR2 + 0x7B0 Access: User read/write31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16R PETBWReset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 015 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0R PERBWReset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0Figure 24-29. Endpoint Initialization (ENDPTPRIME) Register
