AT43USB320A_04 ATMEL [ATMEL Corporation], AT43USB320A_04 Datasheet - Page 79

• Manufacturer Part Number: AT43USB320A_04
• Description: Full-speed USB Microcontroller with an Embedded Hub
• Manufacturer: ATMEL [ATMEL Corporation]

1443E–USB–4/04
Function Endpoint 1, 2 Control Register – FENDP1,2_CR
• Bit 7 – EPEN: Endpoint Enable
0 = Disable endpoint
1 = Enable endpoint
• Bit 6..4 – Reserved
These bits are reserved in the AT43USB320A and will read as zero.
• Bit 3 – DTGLE: Data Toggle
Identifies DATA0 or DATA1 packets. This bit will automatically toggle and requires clearing by
the firmware only in certain special circumstances.
• Bit 2 – EPDIR: Endpoint Direction
0 = Out
1 = In
• Bit 1, 0 – EPTYPE: Endpoint Type
These bits programs the type of endpoint.
Read/Write
Initial Value
$1FE4
$1FE3
Bit
EPEN
EPEN
R/W
Bit1
7
0
0
1
1
R
6
–
–
0
5
R
0
–
–
4
–
–
R
0
DTGLE
DTGLE
Bit0
R/W
1
0
1
3
0
EPDIR
EPDIR
R/W
2
0
EPTYPE1
EPTYPE1
Type
Isochronous
Bulk
Interrupt
R/W
AT43USB320A
1
0
EPTYPE0
EPTYPE0
R/W
0
0
FENDP1_CR
FENDP2_CR
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