upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 591

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

(3)
(a) Read
(b) Write
Caution:
(a) Read
Remarks: 1. Set the ABTCLR bit to 1 while the ABTTRG bit is cleared to 0.
Cautions: 1. Do not set the ABTTRG bit to 1 in the initialization mode. If the ABTTRG bit is set
Figure 16-25: CAN Global Automatic Block Transmission Control Register (CnGMABT) Format (1/2)
CnGMABT
CnGMABT
ABTTRG
ABTCLR
CAN global automatic block transmission control register (CnGMABT)
The CnGMABT register is used to control the automatic block transmission (ABT) operation.
0
1
0
1
Before changing the normal operation mode with ABT to the initialization mode, be
sure to set the CnGMABT register to the default value (0000H). After setting, confirm
that the CnGMABT register is initialized to 0000H.
2. When the automatic block transmission engine is cleared by setting the ABTCLR bit to
2. Do not set the ABTTRG bit to 1 while the CnCTRL.TSTATbit is set to 1. Confirm
Clearing the automatic transmission engine is completed.
The automatic transmission engine is being cleared.
Automatic block transmission is stopped.
Automatic block transmission is under execution.
15
15
The operation is not guaranteed if the ABTCLR bit is set to 1 while the ABTTRG bit is
set to 1.
1, the ABTCLR bit is automatically cleared to 0 as soon as the requested clearing pro-
cessing is complete.
to 1 in the initialization mode, the operation is not guaranteed after the CAN mod-
ule has entered the normal operation mode with ABT.
that the TSTAT bit = 0 before setting the ABTTRG bit to 1.
0
7
0
0
7
0
14
14
0
6
0
0
6
0
User’s Manual U16702EE3V2UD00
13
13
0
5
0
0
5
0
Automatic block transmission engine clear status bit
Chapter 16 FCAN Controller
Automatic block transmission status bit
12
12
0
4
0
0
4
0
11
11
0
3
0
0
3
0
10
10
0
2
0
0
2
0
ABTCLR ABTTRG
ABTCLR
Set
9
0
1
9
1
0
ABTTRG
ABTTRG
Clear
Set
8
0
0
8
0
see Table
Address R/W After reset
Address R/W After reset
16-4
R/W
0000H
591