AT43USB325E-AU Atmel, AT43USB325E-AU Datasheet - Page 84

• Manufacturer Part Number: AT43USB325E-AU
• Description: IC USB KEYBOARD CTRLR 64LQFP
• Manufacturer: Atmel
• Series: AVR®r

Specifications of AT43USB325E-AU

• Applications: Keyboard Controller
• Core Processor: AVR
• Program Memory Type: SRAM (16 kB)
• Controller Series: AT43USB
• Ram Size: 512 x 8
• Interface: SPI, 3-Wire Serial
• Number Of I /o: 42
• Voltage - Supply: 4.4 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8.4.2.2
84
AT43USB325
Hub Port Control Register – HPCON
• Bit 7 – Reserved
This bits is reserved in the AT43USB325 and will read as zero.
• Bit 6..4 – HPCON2..0: Hub Port Control Command
These bits are written by firmware to control the port states upon receipt of a Host request.
Disable Port = ClearPortFeature(PORT_ENABLE)
Action: USB hardware places addressed port in disabled state. Port 1 is placed in disabled
state by firmware.
Enable Port = SetPort Feature(PORT_ENABLE)
Action: USB hardware places addressed port in enabled state. Firmware is responsible for plac-
ing Port 1 in enabled state.
Reset and Enable Port = SetPort Feature(PORT_RESET)
Action: USB hardware drives reset signaling through addressed port. USB hardware and firm-
ware resets their embedded function registers to the default state.
Suspend Port = SetPortFeature(PORT_SUSPEND)
Action: USB hardware places port in idle state and stops propagating traffic through the
addressed port. Firmware places Port 1 in suspend state by disabling its endpoints and placing
the peripheral function in its low power state.
Resume Port = ClearPortFeature(PORT_SUSPEND)
Action: USB hardware sends resume signaling to addressed port and then enables port. Firm-
ware takes the embedded function out of the suspend state and enables Port 1's endpoints.
• Bit 3 – Reserved
This bits is reserved in the AT43USB325 and will read as zero.
• Bit 2..0 – HPCON2..0: Hub Port Address
Read/Write
Initial Value
$1FC5
Bit
Bit6
0
0
0
0
1
R
7
–
0
HPCON2
R/W
6
0
Bit5
0
0
1
1
0
HPCON1
R/W
5
0
HPCON0
R/W
4
0
Bit4
0
1
0
1
0
R
3
–
0
HPADD2
Disable port
Enable port
Reset and enable port
Suspend port
Resume port
Action
R/W
2
0
HPADD1
R/W
1
0
HPADD0
R/W
0
0
3355C–USB–4/05
HPCON