AT43USB326-AC Atmel, AT43USB326-AC Datasheet - Page 30

• Manufacturer Part Number: AT43USB326-AC
• Description: IC USB KEYBOARD CTRLR HUB 48LQFP
• Manufacturer: Atmel
• Series: AVR®r

Specifications of AT43USB326-AC

• Applications: Keyboard Controller
• Core Processor: AVR
• Program Memory Type: Mask ROM (16 kB)
• Controller Series: AT43USB
• Ram Size: 512 x 8
• Interface: USB
• 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: 48-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

30
AT43USB326
USB Interrupt Mask Register – UIMSKR
• Bit 7 – SOF IMSK: Enable Start of Frame Interrupt Mask
When the SOF IMSK bit is set (1), the Start of Frame Interrupt is masked.
• Bit 6 – EOF2 IMSK: Enable EOF2 Interrupt
When the EOF2 IMSK bit is set (1), the EOF2 Interrupt is masked.
• Bit 5, 4 – Res: Reserved Bits
These bits are reserved and always read as zero.
• Bit 3 – HEP0 IMSK: Enable Endpoint 0 Interrupt
When the HEP0 IMSK bit is set (1), the Hub Endpoint 0 Interrupt is masked.
• Bit 2 – FEP2 IMSK: Enable Endpoint 2 Interrupt
When the FE2 IMSK bit is set (1), the Function Endpoint 2 Interrupt is masked.
• Bit 1 – FEP1 IMSK: Enable Endpoint 1 Interrupt
When the FE1 IMSK bit is set (1), the Function Endpoint 1 Interrupt is masked.
• Bit 0 – FEP0 IMSK: Enable Endpoint 0 Interrupt
When the FE0 IMSK bit is set (1), the Function Endpoint 0 Interrupt is masked.
Initial Value
Read/Write
$1FF6
Bit
SOF IMSK
R/W
7
0
EOF2 IMSK
R/W
6
0
R
5
–
0
R
4
–
0
HEP0 IMSK
R/W
3
0
FEP2 IMSK
R/W
2
0
FEP1 IMSK
R/W
1
0
FEP0 IMSK
R/W
3313D–USB–04/06
0
0
UIMSKR