M5407C3 Freescale Semiconductor, M5407C3 Datasheet - Page 76

• Manufacturer Part Number: M5407C3
• Description: KIT EVAL FOR MCF5407 W/ETHERNET
• Manufacturer: Freescale Semiconductor
• Series: ColdFire®r
• Type: Microprocessorr

Specifications of M5407C3

• Contents: Module and Misc Hardware
• Processor To Be Evaluated: MCF5407
• Interface Type: Ethernet
• For Use With/related Products: MCF5407
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Freescale Semiconductor, Inc.
Real-Time Clock
through the RS-232 driver/receiver and are available on DB-9 connectors P4 and P5. Refer
to the MCF5407 User’s Manual for programming and the register map.
2
3.2.2 I
C Module
2
The MCF5407 has a built in I
C module which allows interchip bus interface for a number of I/O
devices. It is compatible with industry-standard I
2
C Bus. The M5407C3 uses this to access the
SDRAM eeprom parameters. The two I
2
C signals are SDA and SCL which are available on the J2
expansion connector and J6 (this connector is unpopulated, see BOM in Appendix XXX for part
number). These signals are open-collector signals. However, they have pull-up resistors on the
M5407C3. These signals are connected to the SDRAM DIMM module I
2
C interface but not used
by the debugger. The interrupt control register for I
2
C is set for Level 3, priority 0 and autovector.
2
Please note the MCF5407 I
C module is only 3.3V tolerant. Level shifters should be used if 5V
2
devices are being interfaced to the MCF5407 I
C.
3.3 Real-Time Clock
The M41T11M is a real-time clock incorporating 64 bytes of low power static RAM and a
built-in 32.768KHz oscillator, driven from an external crystal. The first 8 bytes of RAM are
used to provide the clock/calendar storage, which are configured in BCD format. The
remaining 56 bytes of RAM is available for use as battery backed storage - if the battery
site on the M5407C3 is populated. Addresses and data are transferred via the I2C
bus to the M41T11M within which an address register is incremented after each read or
write of data. The device is year 2000 compliant and has automatic leap year compensation.
There are counters within the device for seconds, minutes, hours, day, date, month, year and
century.
3.4 Parallel I/O Port
The MCF5407 has one 16-bit parallel port. All the pins have dual functions. They can be
configured as I/O or their alternate function via the Pin Assignment register. dBug programs
the parllel port pins as follows:
P[3:0] connects to the SDRAM mux control and LEDs.
P[7:4] connects to LEDs and are available to the user during dBUG.
P[15:8] are configured as A[31:24].
3.5 On-Board Ethernet Logic
The M5407C3 includes the necessary logic, drivers, and the NE2000 compatible Ethernet
chip to allow 10M bit transfer rate on a network. The Ethernet-space addresses are located
starting at 0x40000000.
The interface base address is 0x300 and uses IRQ3. However, the Ethernet base address in
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M5407C3 User’s Manual