MCF5253VM140J Freescale Semiconductor, MCF5253VM140J Datasheet - Page 342

• Manufacturer Part Number: MCF5253VM140J
• Description: IC MCU 2.1MIPS 140MHZ 225MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: MCF525xr

Specifications of MCF5253VM140J

• Core Processor: Coldfire V2
• Core Size: 32-Bit
• Speed: 140MHz
• Connectivity: CAN, EBI/EMI, I²C, QSPI, UART/USART, USB OTG
• Peripherals: DMA, WDT
• Program Memory Type: ROMless
• Ram Size: 128K x 8
• Voltage - Supply (vcc/vdd): 1.08 V ~ 1.32 V
• Data Converters: A/D 6x12b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 70°C
• Package / Case: 225-MAPBGA
• Processor Series: MCF525x
• Core: ColdFire V2
• 3rd Party Development Tools: JLINK-CF-BDM26, EWCF
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Details

Audio Interface Module (AIM)
17.9.1.1
The frequency measurement circuit first detects the edges of the incoming clock. This pulse signal is then
passed through an 80 Hz band-width low-pass filter. The signal that comes after the low-pass filter is
low-noise, and is suitable for precision frequency measurement. (Expected noise level: order-of magnitude
-100 dB). Before it can be used as a frequency increment for the Discrete Time oscillator, it must undergo
additional filtering to push back the noise level on the phase.
17.9.2
The XTRIM output allows use of varicap-controlled crystal. (See
must output a PWM/PDM modulated phase-error signal. One 16-bit config register is associated with this
functionality.
17-44
SOURCE SELECT
Address MBAR2 + 0xA3
GAIN SELECT
Reset
Bit Name
W
R
7–6
5–3
2–0
XTRIM Option - Locking Xtal Clock to Incoming Signal
Filtering for the Discrete Time Oscillator
–
7
Reserved.
000 6 * 2 ** 15
001 4 * 2 ** 15
010 3 * 2 ** 15
011 4 * 2 ** 14
100 3 * 2 ** 14
101 4 * 2 ** 13
110 3 * 2 ** 13
000 SCLK1
001 SCLK2
010 SCLK3
011 Reserved
100 EBUIN
Others Reserved, undefined
Table 17-25. PhaseConfig Register Field Descriptions
–
6
Figure 17-25. PhaseConfig Register
MCF5253 Reference Manual, Rev. 1
0
5
Gain select
0
4
Description
0
3
Figure
17-26). To do this, the XTRIM
0
2
Source Select
Freescale Semiconductor
Access: User read/write
0
1
0
0