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您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄200645 > UPD703270GF-XXX-JBT 32-BIT, MROM, 20 MHz, RISC MICROCONTROLLER, PQFP100 PDF資料下載

型號(hào)：	UPD703270GF-XXX-JBT
元件分類：	微控制器/微處理器
英文描述：	32-BIT, MROM, 20 MHz, RISC MICROCONTROLLER, PQFP100
封裝：	14 X 20 MM, PLASTIC, QFP-100
文件頁(yè)數(shù)：	841/1080頁(yè)
文件大?。?/td>	6965K
代理商：	UPD703270GF-XXX-JBT

CHAPTER 19 CAN CONTROLLER

User’s Manual U16541EJ4V0UD

Figure 19-28. Transition to Operation Modes

channel invalid

[Receive-only mode]

OPMODE[2:0]=03H

OPMODE[2:0] = 00H

and CAN bus is busy.

OPMODE[2:0] = 03H

[Single-shot mode]

OPMODE[2:0]=04H

OPMODE[2:0] = 04H

OPMODE[2:0] = 05H

OPMODE[2:0] = 00H

All CAN modules are

in INIT mode and GOM = 0

RESET released

[Normal operation

mode with ABT]

OPMODE[2:0]=02H

OPMODE[2:0] = 00H

and CAN bus is busy.

OPMODE[2:0] = 00H

and interframe space

OPMODE[2:0] = 02H

OPMODE[2:0] = 01H

OPMODE[2:0] = 00H

and CAN bus is busy.

[Normal operation

OPMODE[2:0]=01H

OPMODE[2:0] = 00H

and CAN bus is busy.

OPMODE[2:0] = 00H

and interframe space

OPMODE[2:0] = 00H

and interframe space

OPMODE[2:0] = 00H

and interframe space

OPMODE[2:0] = 00H

and interframe space

OPMODE[2:0] = 00H

and CAN bus is busy.

[Self-test mode]

OPMODE[2:0]=05H

The transition from the initialization mode to an operation mode is controlled by the C0CTRL.OPMODE2 to

C0CTRL.OPMODE0 bits.

Changing from one operation mode into another requires shifting to the initialization mode in between. Do not

change one operation mode to another directly; otherwise the operation will not be guaranteed.

Requests for transition from an operation mode to the initialization mode are held pending when the CAN bus is not

in the interframe space (i.e., frame reception or transmission is in progress), and the CAN module enters the

initialization mode at the first bit in the interframe space (the values of the OPMODE2 to OPMODE0 bits are changed

to 00H). After issuing a request to change the mode to the initialization mode, read the OPMODE2 to OPMODE0 bits

until their values become 000B to confirm that the module has entered the initialization mode (see Figure 19-36).

19.8.5 Resetting error counter C0ERC of CAN module

If it is necessary to reset the C0ERC and C0INFO registers when re-initialization or forced recovery from the bus-

off status is made, set the C0CTRL.CCERC bit to 1 in the initialization mode. When this bit is set to 1, the C0ERC

and C0INFO registers are cleared to their default values.

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