ATA6616-P3QW Atmel, ATA6616-P3QW Datasheet - Page 198

• Manufacturer Part Number: ATA6616-P3QW
• Description: TXRX MULTICHIP MOD LIN SIP 38QFN
• Manufacturer: Atmel
• Series: AVR® ATA66 LIN-SBCr

Specifications of ATA6616-P3QW

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, LIN, SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 16
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 38-VQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.16.5.7
Figure 4-76. LIN2.1 - Rx Response - No Error
198
LRXDL (*)
LTXDL (*)
LIN bus
LBUSY
(*) : LRXDL & LTXDL updated by user
Atmel ATA6616/ATA6617
Data Length
LIDOK
LINDLR=0x?4
Section 4.16.4.6 “LIN Commands” on page 191
set the LRXDL[3..0] or LTXDL[3..0] fields of LINDLR register before receiving or transmitting a
response.
In the case of Tx Response the LRXDL[3..0] will be used by the hardware to count the number
of bytes already successfully sent.
In the case of Rx Response the LTXDL[3..0] will be used by the hardware to count the number
of bytes already successfully received.
If an error occurs, this information is useful to the programmer to recover the LIN messages.
Data Length in LIN 2.1
Data Length in LIN 1.3
Data Length in Rx Response
4
?
• If LTXDL[3..0]=0 only the CHECKSUM will be sent,
• If LRXDL[3..0]=0 the first byte received will be interpreted as the CHECKSUM,
• If LTXDL[3..0] or LRXDL[3..0] >8, values will be forced to 8 after the command setting and
• LRXDL and LTXDL fields are both hardware updated before setting LIDOK by decoding the
• Via the above mechanism, a length of 0 or >8 is not possible.
• The user initializes LRXDL field before setting the Rx Response command,
• After setting the Rx Response command, LTXDL is reset by hardware,
• LRXDL field will remain unchanged during Rx (during busy signal),
• LTXDL field will count the number of received bytes (during busy signal),
• If an error occurs, Rx stops, the corresponding error flag is set and LTXDL will give the
• If no error occurs, LRXOK is set after the reception of the CHECKSUM, LRXDL will be
DATA-0
1
before sending or receiving of the first byte.
data length code contained in the received PROTECTED IDENTIFIER (LRXDL = LTXDL).
number of received bytes without error,
unchanged (and LTXDL = LRXDL).
st
Byte
LCMD=Rx Response
0
2
DATA-1
nd
1
Byte
DATA-2
3
rd
2
Byte
describes how to set or how are automatically
DATA-3
4
th
3
Byte
LCMD2..0=000
CHECKSUM
4
b
9132D–AUTO–12/10
LRXOK