MPC5125YVN400 Freescale Semiconductor, MPC5125YVN400 Datasheet - Page 592

• Manufacturer Part Number: MPC5125YVN400
• Description: IC MCU 32BIT E300 324TEPBGA
• Manufacturer: Freescale Semiconductor
• Series: MPC51xxr

Specifications of MPC5125YVN400

• Core Processor: e300
• Core Size: 32-Bit
• Speed: 400MHz
• Connectivity: CAN, EBI/EMI, Ethernet, I²C, USB OTG
• Peripherals: DMA, WDT
• Number Of I /o: 64
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.33 V ~ 1.47 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 324-PBGA
• Processor Series: MPC51xx
• Core: e300
• Data Bus Width: 32 bit
• Development Tools By Supplier: TWR-MPC5125-KIT, TWR-SER, TWR-ELEV, TOWER
• Maximum Clock Frequency: 400 MHz
• Operating Supply Voltage: 1.4 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Data Ram Size: 32 KB
• I/o Voltage: 3.3 V
• Interface Type: CAN, I2C
• Minimum Operating Temperature: - 40 C
• Program Memory Size: 32 bit
• Cpu Speed: 400MHz
• Embedded Interface Type: CAN, I2C, SPI, UART, USB
• Digital Ic Case Style: TEPBGA
• No. Of Pins: 324
• Rohs Compliant: Yes
• Cpu Family: MPC5xx
• Device Core Size: 32b
• Frequency (max): 400MHz
• Total Internal Ram Size: 32KB
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 324
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

MSCAN
22.3.2.4
This register provides for various bus timing control of the MSCAN module as described below.
Read: Anytime
Write: Anytime in initialization mode (INITRQ = 1 and INITAK = 1)
Bit time is determined by:
22-14
TSEG2[2:0]
TSEG1[3:0]
Address: Base + 0x05
•
•
•
SAMP
Reset
Field
Oscillator frequency
Baud rate prescaler
Number of time quanta (Tq) clock cycles per bit
W
R
MSCAN Bus Timing Register 1 (CANBTR1)
SAMP
Sampling. This bit determines the number of CAN bus samples taken per bit time. (see
0 One sample per bit.
1 Three samples per bit.
If SAMP = 0, the resulting bit value is equal to the value of the single bit positioned at the sample point. If
SAMP = 1, the resulting bit value is determined by using majority rule on the three total samples. For higher
bit rates, it is recommended that only one sample is taken per bit time (SAMP = 0).
Time Segment 2. Time segments within the bit-time fix the number of clock cycles per bit-time and location of
the sample point (see
000
001
010
...................
111
Time Segment 1. Time segments within the bit-time fix the number of clock cycles per bit-time and location of
the sample point (see
0000 1 Tq clock cycle
0001 2 Tq clock cycles
0010 3 Tq clock cycles
0011 4 Tq clock cycles
.................
1110 15 Tq clock cycles
1111 16 Tq clock cycles
0
0
Bit Time =
1 Tq clock cycle
2 Tq clock cycles
3 Tq clock cycles
8 Tq clock cycles
Figure 22-6. MSCAN Bus Timing Register 1 (CANBTR1)
1
0
(Prescaler value)
MPC5125 Microcontroller Reference Manual, Rev. 2
f
Table 22-7. CANBTR1 field descriptions
CANCLK
Figure
Figure
TSEG2[2:0]
0
2
22-38).
22-38).
×
(1
0
3
+
TimeSegment1
Description
0
4
+
Timesegment2)
0
5
TSEG1[3:0]
Freescale Semiconductor
Access: User read/write
0
6
Figure
22-38).
Eqn. 22-1
0
7