Bit
7
6
5
-
4
-
3
-
2
-
1
-
0
EPDIR
R/W
0
EPTYPE1:0
UECFG0X
Read/Write
Initial Value
R/W
0
R/W
0
R
0
R
0
R
0
R
0
R
0
• 7-6 - EPTYPE1:0 - Endpoint Type Bits
Set this bit according to the endpoint configuration:
00b: Control10b: Bulk
01b: Isochronous11b: Interrupt
• 5-4 - Reserved
The value read from these bits is always 0. Do not set these bits.
• 3-2 - Reserved for test purpose
The value read from these bits is always 0. Do not set these bits.
• 1 - Reserved
The value read from this bits is always 0. Do not set this bit.
• 0 - EPDIR - Endpoint Direction Bit
Set to configure an IN direction for bulk, interrupt or isochronous endpoints.
Clear to configure an OUT direction for bulk, interrupt, isochronous or control endpoints.
Bit
7
-
6
5
EPSIZE2:0
R/W
4
3
2
1
ALLOC
R/W
0
0
-
EPBK1:0
UECFG1X
Read/Write
Initial Value
R
0
R/W
0
R/W
0
R/W
0
R/W
0
R
0
0
• 7 - Reserved
The value read from these bits is always 0. Do not set these bits.
• 6-4 - EPSIZE2:0 - Endpoint Size Bits
Set this bit according to the endpoint size:
000b: 8 bytes100b: 128 bytes
001b: 16 bytes101b: 256 bytes
010b: 32 bytes110b: 512 bytes
011b: 64 bytes111b: Reserved. Do not use this configuration.
• 3-2 - EPBK1:0 - Endpoint Bank Bits
Set this field according to the endpoint size:
00b: One bank
01b: Double bank
1xb: Reserved. Do not use this configuration.
286
AT90USB64/128
7593A–AVR–02/06
ATMEL [ ATMEL ]
