Datasheet

Table Of Contents
USB3320
DS00001792E-page 50 2014-2016 Microchip Technology Inc.
7.1.1 ULPI REGISTER SET
The following registers are used for the ULPI interface.
7.1.1.1 Vendor ID Low
Address = 00h (read only)
7.1.1.2 Vendor ID High
Address = 01h (read only)
7.1.1.3 Product ID Low
Address = 02h (read only)
7.1.1.4 Product ID High
Address = 03h (read only)
7.1.1.5 Function Control
Address = 04-06h (read), 04h (write), 05h (set), 06h (clear)
Field Name Bit Access Default Description
Vendor ID Low 7:0 rd 24h Microchip Vendor ID
Field Name Bit Access Default Description
Vendor ID High 7:0 rd 04h Microchip Vendor ID
Field Name Bit Access Default Description
Product ID Low 7:0 rd 07h Microchip Product ID
Field Name Bit Access Default Description
Product ID High 7:0 rd 00h Microchip Product ID
Field Name Bit Access Default Description
XcvrSelect[1:0] 1:0 rd/w/s/c 01b Selects the required transceiver speed.
00b: Enables HS transceiver
01b: Enables FS transceiver
10b: Enables LS transceiver
11b: Enables FS transceiver for LS packets (FS
preamble automatically pre-pended)
TermSelect 2 rd/w/s/c 0b Controls the DP and DM termination depending on
XcvrSelect, OpMode, DpPulldown, and DmPulldown.
The DP and DM termination is detailed in Table 5- 1.
OpMode 4:3 rd/w/s/c 00b Selects the required bit encoding style during transmit.
00b: Normal Operation
01b: Non-Driving
10b: Disable bit-stuff and NRZI encoding
11b: Reserved
Reset 5 rd/w/s/c 0b Active high transceiver reset. This reset does not reset
the ULPI interface or register set. Automatically clears
after reset is complete.