R8CSLASH20 datasheet(366/501 Pages) RENESAS

366 / 501 page

R8C/20 Group, R8C/21 Group

17. Hardware LIN

Rev.2.00 Aug 27, 2008

Page 350 of 458

REJ09B0250-0200

Figure 17.5

Example of Header Field Transmission Flowchart (1)

Timer RA Set to timer mode

TMOD0 to 2 bits in TRAMR register

← 000b

Timer RA Set the pulse output level from low to start

TEDGSEL bit in TRAIOC register

← 1

Timer RA Set the INT1/TRAIO pin to P1_5

TIOSEL bit in TRAIOC register

← 1

Timer RA Set the count source (f1, f2, f8, fOCO)

TCK0 to 2 bits in TRAMR register

Timer RA Set the Synch Break width

TRAPRE register

TRA register

Hardware LIN Set to master mode

MST bit in LINCR register

← 1

Hardware LIN Set the LIN operation to start

LINE bit in LINCR register

← 1

Hardware LIN Set the register to enable interrupts

(Bus collision detection, Synch Break detection,

Synch Field measurement)

BCIE, SBIE, SFIE bits in LINCR register

Hardware LIN Clear the status flags

(Bus collision detection, Synch Break detection,

Synch Field measurement)

B2CLR, B1CLR, B0CLR bits in LINST register

← 1

Set the count source and the

TRA and TRAPRE registers

as suitable for the Synch

Break period.

During master mode, the

Synch Field measurement-

completed interrupt cannot be

used.

Set the TIOSEL bit in the

TRAIOC register to 1 in the

hardware LIN function.

UART0

Set to transmit/receive mode

(Transfer data length: 8 bits, Internal clock, 1 stop bit,

Parity disabled)

U0MR register

UART0

UART0 Set the BRG count source (f1, f8, f32)

U0C0CLK0 to 1 bit

UART0

UART0 Set the bit rate

U0BRG register

Hardware LIN Set the LIN operation to stop

LINE bit in LINCR register

← 0

Set the BRG count source

and U0BRG register as

appropriate for the bit rate.

R8C/20 Datasheet(PDF) 366 Page - Renesas Technology Corp

R8C/20 Datasheet(HTML) 366 Page - Renesas Technology Corp

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