MPC852TADS Freescale Semiconductor, MPC852TADS Datasheet - Page 71

• Manufacturer Part Number: MPC852TADS
• Description: Networking Modules & Development Tools ADS BOARD FOR 852
• Manufacturer: Freescale Semiconductor
• Type: Network Controller & Processorr

Specifications of MPC852TADS

• Memory Type: Flash, SDRAM
• Interface Type: RS-232, Ethernet, PCMCIA
• Operating Voltage: 1.8 V to 3.3 V
• Operating Temperature Range: 0 C to + 30 C
• Board Size: 233 mm x 150 mm
• Product: Modules
• For Use With/related Products: MPC852T
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

59
8-31
BIT
A. For FUTURE Use
5
6
7
a. Not implemented.
4•12
For host-controlled operation, a host computer controls the board via the BDM Debug Port. This configuration serves
for extensive debugging using an on-host debugger. Host computer can be connected with the board directly via On
board Serial command converter or via On board EPP converter. No needs external parts.
EPP is an asynchronous, byte wide, bidirectional channel controlled by the host device. This interface provides the
capability to send data from the host computer to the MPC852T at a high speed.
The bus is a multiplexed address/data bus connected to a D-Type 25 pins Parallel connector called P20. Typically,
EPP operates on a two-phase-bus cycle. First, an address is generated on the bus and is latched by Altera logic when
the host generates an address strobe. The Altera logic uses this cycle for control. A separate Data strobe is generated
to perform the actual data transfer. Cycles are terminated when the Busy signal is transferred from the Altera to the
host computer.
In the Altera logic there is a parallel to serial converter for write data and a serial to parallel converter for read data
from the MPC.
The signals used for EPP Mode transfer are described in detail in
Signal Description with EPP I/F" below
scribed in detail in
Reserved
MNEMONIC
PORESET
MIIRXEN
ETHRST
On board EPP/SPP Command Converter
TABLE 4-22. "Parallel Host Port Connector’s Signal Description with Serial Command
Freescale Semiconductor, Inc.
MIIRXEN. When active (high), the MII Fast Ethernet Device Davicom
DM9161E connected to Port D is enabled. When negated (low) all device
output signals are tri- stated.
PORESET
MPC852TADS. When negated (low), the board is out of Power on Reset.
ETHRST. When active (low), the Ethernet Device Davicom DM9161E gets
reset and being initialized to its Reset value. When inactive, the Ethernet
Device is out of Reset.
Not Implemented
For More Information On This Product,
TABLE 4-20. BCSR4 Description
a
Go to: www.freescale.com
. When active (high), PORESET is implemented on the
Functional Description
. The signals used for Serial Command Converter Mode transfer are de-
MPC852TADS - User’s Manual
Function
TABLE 4-21. "Parallel Host Port Connector’s
A
Release 1.0
0
0
1
PON
DEF
-
R,W
R,W
R,W
ATT.
R,W