MC56F8257MLH Freescale Semiconductor, MC56F8257MLH Datasheet - Page 437

• Manufacturer Part Number: MC56F8257MLH
• Description: DSC 64K FLASH 60MHZ 64-LQFP
• Manufacturer: Freescale Semiconductor
• Series: 56F8xxxr

Specifications of MC56F8257MLH

• Core Processor: 56800E
• Core Size: 16-Bit
• Speed: 60MHz
• Connectivity: CAN, I²C, LIN, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Ram Size: 4K x 16
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x12b, D/A 1x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 64-LQFP
• Product: DSCs
• Processor Series: 56800E
• Core: 56800E
• Device Million Instructions Per Second: 60 MIPs
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 54
• Data Ram Size: 8 KB
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

13.3.8 MSCAN Transmitter Flag Register (CAN_TFLG)
The transmit buffer empty flags each have an associated interrupt enable bit in the
CAN_TIER register.
The CAN_TFLG register is held in the reset state when the initialization mode is active
(INITRQ=1 and INITAK=1). This register is writable when not in initialization mode
(INITRQ=0 and INITAK=0).
Read: Anytime
Freescale Semiconductor
TSTATE
OVRIE
RXFIE
Field
3–2
1
0
These RSTAT enable bits control the sensitivity level in which receiver state changes are causing CSCIF
interrupts. Independent of the chosen sensitivity level the RSTAT flags continue to indicate the actual
receiver state and are only updated if no CSCIF interrupt is pending.
Bus-off state is defined by the CAN standard (see Bosch CAN 2.0A/B protocol specification: for only
transmitters). Because the only possible state change for the transmitter from bus-off to TxOK also forces
the receiver to skip its current state to RxOK, the coding of the RSTAT[1:0] flags define an additional bus-
off state for the receiver.
00
01
10
11
Transmitter Status Change Enable
These TSTAT enable bits control the sensitivity level in which transmitter state changes are causing
CSCIF interrupts. Independent of the chosen sensitivity level, the TSTAT flags continue to indicate the
actual transmitter state and are only updated if no CSCIF interrupt is pending.
00
01
10
11
Overrun Interrupt Enable
0
1
Receiver Full Interrupt Enable
0
1
No interrupt request is generated from this event.
An overrun event causes an error interrupt request.
No interrupt request is generated from this event.
A receive buffer full (successful message reception) event causes a receiver interrupt request.
Do not generate any CSCIF interrupt caused by transmitter state changes.
Generate CSCIF interrupt only if the transmitter enters or leaves “bus-off” state. Discard other
transmitter state changes for generating CSCIF interrupt.
Generate CSCIF interrupt only if the transmitter enters or leaves “TxErr” or “bus-off” state. Discard
other transmitter state changes for generating CSCIF interrupt.
Generate CSCIF interrupt on all state changes.
Do not generate any CSCIF interrupt caused by transmitter state changes.
Generate CSCIF interrupt only if the transmitter enters or leaves “bus-off” state. Discard other
transmitter state changes for generating CSCIF interrupt.
Generate CSCIF interrupt only if the transmitter enters or leaves “TxErr” or “bus-off” state. Discard
other transmitter state changes for generating CSCIF interrupt.
Generate CSCIF interrupt on all state changes.
MC56F825x/4x Reference Manual, Rev. 2, 10/2010
CAN_RIER field descriptions (continued)
Chapter 13 Freescale's Scalable Controller Area Network (MSCAN)
Preliminary
Description
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