Table Of Contents - Epson S2R72V18 Technical Manual

1. Functions........................................................................................................................................... 1
1.1 USB Ports................................................................................................................................ 1
1.2 USB Device/Host Selection ..................................................................................................... 2
1.2.1 USB Device/Host Function Selection Procedure............................................................... 2
1.2.2 USB Port State Change Detection Status.......................................................................... 2
1.2.2.1 USB Port State Change Detection Status Usage Examples........................................... 2
1.2.2.1.1 Device Port Change Status..................................................................................... 2
1.2.2.1.2 Host Port Change Status ........................................................................................ 3
1.2.2.2 Signal Line Change Status Usage.................................................................................. 3
1.3 USB Device Control................................................................................................................. 6
1.3.1 Endpoints .......................................................................................................................... 6
1.3.2 Transactions ...................................................................................................................... 8
1.3.2.1 SETUP Transactions .................................................................................................... 10
1.3.2.2 Bulk/Interrupt OUT Transactions .................................................................................. 11
1.3.2.3 Isochronous OUT Transactions .................................................................................... 12
1.3.2.4 Bulk/Interrupt IN Transactions ...................................................................................... 13
1.3.2.5 Isochronous IN Transaction.......................................................................................... 14
1.3.2.6 PING Transactions ....................................................................................................... 15
1.3.3 Control Transfers............................................................................................................. 16
1.3.3.1 Setup Stage.................................................................................................................. 17
1.3.3.2 Data Stage/Status Stage............................................................................................... 18
1.3.3.3 Automatic Address Setup Function .............................................................................. 18
1.3.3.4 Descriptor Reply Function ............................................................................................ 18
1.3.4 Bulk/Interrupt/Isochronous Transfers............................................................................... 19
1.3.5 Data Flow ........................................................................................................................ 19
1.3.5.1 OUT Transfer................................................................................................................ 19
1.3.5.2 IN Transfer.................................................................................................................... 20
1.3.6 Bulk-Only Support ........................................................................................................... 20
1.3.6.1 CBW Support ............................................................................................................... 21
1.3.6.2 CSW Support ............................................................................................................... 22
1.3.7 Cable Negotiation Function (Auto Negotiator) ................................................................. 23
1.3.7.1 Auto Negotiator ............................................................................................................ 24
1.3.7.1.1 DISABLE .............................................................................................................. 24
1.3.7.1.2 IDLE...................................................................................................................... 24
1.3.7.1.3 WAIT_TIM3US...................................................................................................... 24
S2R72V18 Technical Manual (Rev.1.00)

Table of Contents

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