AT91SAM9G45-CU-999 Atmel, AT91SAM9G45-CU-999 Datasheet - Page 600
![IC MCU ARM9 APMC 324TFBGA](/photos/12/13/121367/324-tfbga-pkg_sml.jpg)
AT91SAM9G45-CU-999
Manufacturer Part Number
AT91SAM9G45-CU-999
Description
IC MCU ARM9 APMC 324TFBGA
Manufacturer
Atmel
Series
AT91SAMr
Datasheet
1.AT91SAM9G45-EKES.pdf
(1218 pages)
Specifications of AT91SAM9G45-CU-999
Core Processor
ARM9
Core Size
16/32-Bit
Speed
400MHz
Connectivity
EBI/EMI, Ethernet, I²C, IrDA, MMC, SPI, SSC, UART/USART, USB
Peripherals
AC'97, DMA, I²S, LCD, POR, PWM, WDT
Number Of I /o
160
Program Memory Size
64KB (64K x 8)
Program Memory Type
ROM
Ram Size
128K x 8
Voltage - Supply (vcc/vdd)
0.9 V ~ 1.1 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
324-TFBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Supplier Unconfirmed
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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- Download datasheet (19Mb)
33.7.8.6
Figure 33-41. Header Reception
6438F–ATARM–21-Jun-10
te RSTSTA=1
Baud Rate
US_LINIR
in US_CR
LINBK
LINID
Clock
RXD
Header Reception (Slave Node Configuration)
All the LIN Frames start with a header which is sent by the master node and consists of a Synch
Break Field, Synch Field and Identifier Field.
In Slave node configuration, the frame handling starts with the reception of the header.
The USART uses a break detection threshold of 11 nominal bit times at the actual baud rate. At
any time, if 11 consecutive recessive bits are detected on the bus, the USART detects a Break
Field. As long as a Break Field has not been detected, the USART stays idle and the received
data are not taken in account.
When a Break Field has been detected, the flag LINBK in the Channel Status register
(US_CSR) is set to “1” and the USART expects the Synch Field character to be 0x55. This field
is used to update the actual baud rate in order to stay synchronized (see
received Synch character is not 0x55, an Inconsistent Synch Field error is generated (see
tion
After receiving the Synch Field, the USART expects to receive the Identifier Field.
When the Identifier Field has been received, the flag LINID in the Channel Status register
(US_CSR) is set to “1”. At this moment the field IDCHR in the LIN Identifier register (US_LINIR)
is updated with the received character. The Identifier parity bits can be automatically computed
and checked (see
STA at “1” in the Control register (US_CR).
13 dominant bits (at 0)
33.7.8.13).
Break Field
Section
1 recessive bit
Delimiter
Break
(at 1)
33.7.8.8).The flags LINID and LINBK are reset by writing the bit RST-
Start
Bit
1
0
Synch Byte = 0x55
1
0
1
0
1
0
Stop
Bit
Start
Bit
ID0 ID1 ID2 ID3 ID4 ID5 ID6 ID7
AT91SAM9G45
Section
33.7.8.7). If the
Stop
Bit
Sec-
600
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