AT43USB320A-AC Atmel, AT43USB320A-AC Datasheet - Page 87
AT43USB320A-AC
Manufacturer Part Number
AT43USB320A-AC
Description
IC USB MCU EMBED HUB AVR 100LQFP
Manufacturer
Atmel
Series
AVR®r
Datasheet
1.AT43USB320A-AC.pdf
(115 pages)
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
-
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Hub General Registers
1443E–USB–4/04
Global State Register – GLB_STATE
• Bit 7...5 – Reserved Bits
These bits are reserved in the AT43USB320A and will read as zeros.
• Bit 4 – SUSP FLG: Suspend Flag
This bit is set to 1 while the USB hardware is in the suspended state. This bit is a firmware
read only bit. It is set and cleared by the USB hardware.
• Bit 3 – RESUME FLGL Resume Flag
When the USB hardware receives a resume signal from the upstream device it sets this bit.
This bit will stay set until the USB hardware completes the downstream resume signaling. This
bit is a firmware read only bit. It is set and cleared by the USB hardware.
• Bit 2 – RMWUPE: Remote Wakeup Enable
This bit is set if the host enables the hub's remote wakeup feature.
• Bit 1 – CONFG: Configured
This bit is set by firmware after a valid SET_CONFIGURATION request is received. It is
cleared by a reset or by a SET_CONFIGURATION with a value of 0.
• Bit 0 – HADD EN: Hub Address Enabled
This bit is set by firmware after the status phase of a SET_ADDRESS request transaction so
the hub will use the new address starting at the next transaction.
Read/Write
Initial Value
$1FFB
Bit
R
7
–
0
6
–
R
0
R
5
–
0
SUSP FLG
R
4
0
RESUME FLG
R
3
0
RMWUPE
R/W
2
0
AT43USB320A
CONFG
R/W
1
0
HADD EN
R/W
0
0
GLB_STATE
87
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