AT43USB320A-AC Atmel, AT43USB320A-AC Datasheet - Page 79

• Manufacturer Part Number: AT43USB320A-AC
• Description: IC USB MCU EMBED HUB AVR 100LQFP
• Manufacturer: Atmel
• Series: AVR®r

Specifications of AT43USB320A-AC

• Applications: USB Hub/Microcontroller
• Core Processor: AVR
• Controller Series: AT43USB
• Ram Size: 512 x 8
• Interface: SPI Serial, USB, UART
• Number Of I /o: 32
• Voltage - Supply: 4.4 V ~ 5.25 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Program Memory Type: -

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
79