ATA6613-EK Atmel, ATA6613-EK Datasheet - Page 194
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ATA6613-EK
Manufacturer Part Number
ATA6613-EK
Description
BOARD DEMO LIN-MCM FOR ATA6613
Manufacturer
Atmel
Specifications of ATA6613-EK
Main Purpose
Interface, LIN + MCU
Embedded
Yes, MCU, 8-Bit
Utilized Ic / Part
ATA6613
Primary Attributes
LIN-SBC (System-Basis-Chip) Transceiver, LIN 2.0, Voltage Regulator, Window Watchdog
Secondary Attributes
16 kB Flash, 4 Power Modes: Pre-Normal, Normal, Sleep, Silent, 48-QFN
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Atmel ATA6612/ATA6613
Figure 6-69. USART Block Diagram
Note:
The dashed boxes in the block diagram separate the three main parts of the USART (listed
from the top): Clock Generator, Transmitter and Receiver. Control Registers are shared by all
units. The Clock Generation logic consists of synchronization logic for external clock input
used by synchronous slave operation, and the baud rate generator. The XCKn (Transfer
Clock) pin is only used by synchronous transfer mode. The Transmitter consists of a single
write buffer, a serial Shift Register, Parity Generator and Control logic for handling different
serial frame formats. The write buffer allows a continuous transfer of data without any delay
between frames. The Receiver is the most complex part of the USART module due to its clock
and data recovery units. The recovery units are used for asynchronous data reception. In addi-
tion to the recovery units, the Receiver includes a Parity Checker, Control logic, a Shift
Register and a two level receive buffer (UDRn). The Receiver supports the same frame for-
mats as the Transmitter, and can detect Frame Error, Data OverRun and Parity Errors.
1. Refer to
Table 6-38 on page 104
UCSRnA
TRANSMIT SHIFT REGISTER
RECEIVE SHIFT REGISTER
BAUD RATE GENERATOR
UDRn(Receive)
UDRn(Transmit)
UBRRn [H:L]
(1)
for USART0 pin placement.
UCSRnB
GENERATOR
SYNC LOGIC
RECOVERY
RECOVERY
CHECKER
PARITY
PARITY
CLOCK
DATA
OSC
Clock Generator
Transmitter
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
Receiver
PIN
PIN
PIN
TX
RX
UCSRnC
9111H–AUTO–01/11
XCKn
TxDn
RxDn
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