FreeCalypso > hg > freecalypso-schem2
view venus/src/usb/usb_domain_buf.v @ 30:74a89c0a6466
Venus MCL: add Q401 charging circuit MOSFET
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 21 Nov 2021 08:40:13 +0000 |
parents | 4722b265cb8c |
children |
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/* * This module encapsulates the 74LVC541A buffer in the USB domain. */ module usb_domain_buf (GND, P_3V3, Int_TxD, Int_RxD, Int_RTS, Int_CTS, Int_DTR, Int_DCD, Int_RI, Int_TxD2, Int_RxD2, Host_TxD, Host_RxD, Host_RTS, Host_CTS, Host_DTR, Host_DCD, Host_RI, Host_TxD2, Host_RxD2); input GND, P_3V3; input Int_TxD, Int_RTS, Int_DTR, Int_TxD2; output Int_RxD, Int_CTS, Int_DCD, Int_RI, Int_RxD2; output Host_TxD, Host_RTS, Host_DTR, Host_TxD2; input Host_RxD, Host_CTS, Host_DCD, Host_RI, Host_RxD2; /* buffer common part */ x541_common common (.Vcc(P_3V3), .GND(GND), .nOE1(GND), .nOE2(GND) ); capacitor bypass_cap (P_3V3, GND); /* input buffers */ buffer_slot_basic buf_RxD (.A(Host_RxD), .Y(Int_RxD)); buffer_slot_basic buf_CTS (.A(Host_CTS), .Y(Int_CTS)); buffer_slot_basic buf_DCD (.A(Host_DCD), .Y(Int_DCD)); buffer_slot_basic buf_RI (.A(Host_RI), .Y(Int_RI)); buffer_slot_basic buf_RxD2 (.A(Host_RxD2), .Y(Int_RxD2)); /* output buffers */ buffer_slot_basic buf_TxD (.A(Int_TxD), .Y(Host_TxD)); buffer_slot_basic buf_DTR (.A(Int_DTR), .Y(Host_DTR)); buffer_slot_basic buf_TxD2 (.A(Int_TxD2), .Y(Host_TxD2)); /* RTS direct pass-thru: use an 0402 0R jumper */ resistor jmp_RTS (Int_RTS, Host_RTS); endmodule