ST72361AR4-Auto datasheet(202/279 Pages) STMICROELECTRONICS

202 / 279 page

LINSCI serial communication interface (LIN master only)

ST72361xx-Auto

202/279

Doc ID 12468 Rev 3

Receiver wakes-up by address mark detection when it received a “1” as the most significant

bit of a word, thus indicating that the message is an address. The reception of this particular

word wakes up the receiver, resets the RWU bit and sets the RDRF bit, which allows the

receiver to receive this word normally and to use it as an address word.

16.4.7

Parity control

Parity control (generation of parity bit in transmission and parity checking in reception) can

be enabled by setting the PCE bit in the SCICR1 register. Depending on the frame length

defined by the M bit, the possible SCI frame formats are as listed in Table 72.

Note:

In case of wake up by an address mark, the MSB bit of the data is taken into account and

not the parity bit.

Even parity

The parity bit is calculated to obtain an even number of “1s” inside the frame made of the 7

or 8 LSB bits (depending on whether M is equal to 0 or 1) and the parity bit.

Example 1:

data = 00110101; 4 bits set => parity bit is 0 if even parity is selected (PS bit = 0).

Odd parity

The parity bit is calculated to obtain an odd number of “1s” inside the frame made of the 7 or

8 LSB bits (depending on whether M is equal to 0 or 1) and the parity bit.

Example: data = 00110101; 4 bits set => parity bit is 1 if odd parity is selected (PS bit = 1).

Transmission mode

If the PCE bit is set then the MSB bit of the data written in the data register is not transmitted

but is changed by the parity bit.

Reception mode

If the PCE bit is set then the interface checks if the received data byte has an even number

of “1s” if even parity is selected (PS = 0) or an odd number of “1s” if odd parity is selected

(PS = 1). If the parity check fails, the PE flag is set in the SCISR register and an interrupt is

generated if PIE is set in the SCICR1 register.

Table 72.

Frame formats

M bit

PCE bit

SCI frame(1)

SB: start bit

STB: stop bit

PB: parity bit

| SB | 8 bit data | STB |

| SB | 7-bit data | PB | STB |

| SB | 9-bit data | STB |

| SB | 8-bit data PB | STB |

ST72361AR4-Auto Datasheet(PDF) 202 Page - STMicroelectronics

ST72361AR4-Auto Datasheet(HTML) 202 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL