ATA6616-P3PW Atmel, ATA6616-P3PW Datasheet - Page 203

• Manufacturer Part Number: ATA6616-P3PW
• Description: TXRX MULTICHIP MOD LIN SIP 38QFN
• Manufacturer: Atmel
• Series: AVR® ATA66 LIN-SBCr

Specifications of ATA6616-P3PW

• 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

4.16.5.14
4.16.5.15
9132D–AUTO–12/10
Message Filtering
Data Management
Message filtering based upon the whole identifier is not implemented. Only a status for frame
headers having 0x3C, 0x3D, 0x3E and 0x3F as identifier is available in the LINSIR register.
Table 4-51.
The LIN protocol says that a message with an identifier from 60 (0x3C) up to 63 (0x3F) uses a
classic checksum (sum over the data bytes only). Software will be responsible for switching
correctly the LIN13 bit to provide/check this expected checksum (the insertion of the ID field in
the computation of the CRC is set - or not - just after entering the Rx or Tx Response
command).
LIN FIFO Data Buffer
To preserve register allocation, the LIN data buffer is seen as a FIFO (with address pointer
accessible). This FIFO is accessed via the LINDX[2..0] field of LINSEL register through the
LINDAT register.
LINDX[2..0], the data index, is the address pointer to the required data byte. The data byte can
be read or written. The data index is automatically incremented after each LINDAT access if
the LAINC (active low) bit is cleared. A roll-over is implemented, after data index = 7 it is data
index=0. Otherwise, if LAINC bit is set, the data index needs to be written (updated) before
each LINDAT access.
The first byte of a LIN frame is stored at the data index=0, the second one at the data index=1,
and so on. Nevertheless, LINSEL must be initialized by the user before use.
UART Data Register
The LINDAT register is the data register (no buffering - no FIFO). In write access, LINDAT will
be for data out and in read access, LINDAT will be for data in.
In UART mode the LINSEL register is unused.
Frame Status
LIDST[2..0]
100
101
110
111
0xx
b
b
b
b
b
Atmel ATA6616/ATA6617
No specific identifier
60 (0x3C) identifier
61 (0x3D) identifier
62 (0x3E) identifier
63 (0x3F) identifier
Frame Status
203