37.11.5 Endpoint1-7 TX Type Registers

Table 37-69. Register Bit Attribute Legend
SymbolDescriptionSymbolDescriptionSymbolDescription
RReadable bitHCCleared by Hardware(Grey cell)Unimplemented
WWritable bitHSSet by HardwareXBit is unknown at Reset
KWrite to clearSSoftware settable bit
Name: TXTYPE
Offset: 0x101A
Reset: 0x0000
Property: PAC Write-Protection

Bit 76543210 
 SPEED[1:0]PROTOCOL[1:0]ENDPOINTNUMBER[3:0] 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 00000000 

Bits 7:6 – SPEED[1:0] Operating Speed Control bits.

ValueDescription
11Low-Speed
10Full-Speed
01Hi-Speed
00Reserved

Bits 5:4 – PROTOCOL[1:0] TX Endpoint Protocol Control bits.

ValueDescription
11Interrupt
10Bulk
01Isochronous
00Control

Bits 3:0 – ENDPOINTNUMBER[3:0] TX Target Endpoint Number bits

This value is the endpoint number contained in the TX endpoint descriptor returned to the USB module during device enumeration.