MC9S12NE64VTU Freescale Semiconductor, MC9S12NE64VTU Datasheet - Page 376
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MC9S12NE64VTU
Manufacturer Part Number
MC9S12NE64VTU
Description
IC MCU 25MHZ ETHERNET/PHY 80TQFP
Manufacturer
Freescale Semiconductor
Series
HCS12r
Datasheet
1.MC9S12NE64VTU.pdf
(554 pages)
Specifications of MC9S12NE64VTU
Mfg Application Notes
MC9S12NE64 Integrated Ethernet Controller Implementing an Ethernet Interface with the MC9S12NE64 Web Server Development with MC9S12NE64 and Open TCP
Core Processor
HCS12
Core Size
16-Bit
Speed
25MHz
Connectivity
EBI/EMI, Ethernet, I²C, SCI, SPI
Peripherals
POR, PWM, WDT
Number Of I /o
38
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
2.375 V ~ 3.465 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
80-TQFP Exposed Pad, 80-eTQFP, 80-HTQFP, 80-VQFP
Data Bus Width
16 bit
Data Ram Size
8 KB
Interface Type
I2C, SCI, SPI
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
70
Number Of Timers
16 bit
Operating Supply Voltage
- 0.3 V to + 3 V
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 65 C
On-chip Adc
10 bit
For Use With
EVB9S12NE64E - BOARD EVAL FOR 9S12NE64DEMO9S12NE64E - DEMO BOARD FOR 9S12NE64
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
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Chapter 12 Ethernet Physical Transceiver (EPHYV2)
restoration to restore the lost DC component of the recovered digital data to correct the baseline wander
problem.
Timing Recovery: The timing recovery block locks onto the incoming data stream, extracts the embedded
clock, and presents the data synchronized to the recovered clock.
In the event that the receive path is unable to converge to the receive signal, it resets the MSE-good (bit
25.15) signal. The clock synthesizer provides a center frequency reference for operation of the clock
recovery circuit in the absence of data.
Adaptive Equalizer: At a data rate of 125 Mbps, the cable introduces significant distortion due to high
frequency roll off and phase shift. The high frequency loss is mainly due to skin effect, which causes the
conductor resistance to rise as the square of the frequency.
The adaptive equalizer will compensate for signal amplitude and phase distortion incurred from
transmitting with different cable lengths.
Loopback: If asserted by bit 0.14, data encoded by the MLT3 encoder block is looped back to the MLT3
decoder block while the transmit and receive paths are disconnected from the media.
A second loopback mode for 100BASE-TX is available by setting bit 18.13 (MII loopback) to a logical 1.
This loopback mode takes the MII transmit data and loops it directly back to the MII receive pins. Again,
the transmit and receive paths are disconnected from the media.
MII loopback has precedence over the digital loopback if both are enabled at the same time.
A third loopback mode is available by setting bit 18.4 high. This analog loopback mode takes the MLT3
encoded data and loops it back through the base line wander and analog receive circuits.
Line Transmitter and Line Receiver: These analog blocks allow EPHY to drive and receive data to/from
the 100BASE-TX media. The transmitter is designed to drive a 100-Ω UTP cable.
Link Monitor: The link monitor process is responsible for determining whether the underlying receive
channel is providing reliable data. If a failure is found, normal operation will be disabled. As specified in
the IEEE 802.3 standard, the link is operating reliably if a signal is detected for a period of 330 µs.
Far End Fault: While the auto-negotiation function is disabled, this function is used to exchange fault
information between the PHY and the link partner.
12.4.5
Low Power Modes
There are several reduced power configurations available for the EPHY.
12.4.5.1 Stop Mode
If the MCU executes a STOP instruction, the EPHY will be powered down and all internal MII registers
reset to their default state. Upon exiting stop mode, the EPHY will exit the power-down state and latch the
values previously written to the EPHYCTL0 and EPHYCTL1 registers. The MII registers will have to be
re-initialized after the start-up delay (t
) has expired.
Start-up
MC9S12NE64 Data Sheet, Rev. 1.1
376
Freescale Semiconductor
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