MC68MH360EM25L Freescale Semiconductor, MC68MH360EM25L Datasheet - Page 662

• Manufacturer Part Number: MC68MH360EM25L
• Description: IC MPU QUICC ETHER 25MHZ 240FQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68MH360EM25L

• Processor Type: M683xx 32-Bit
• Speed: 25MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 240-FQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -

Parallel Interface Port (PIP)
7.13.6 Transparent Data Transfers
In the transparent handshake mode, the PIP may be configured as a transmitter or a
receiver. This configuration has only one handshake pin.
The transparent mode is controlled only by the RISC. Operation using the RISC requires
BDs and parameter RAM initialization very similar to the other serial channels. Data is then
stored in the buffers using one of the SDMA channels (one of the available channels from
SMC2).
In this mode, the B17 pin falling edge generates the request to the RISC, which causes the
RISC to receive/transmit data. The direction of the pins is controlled by the port B data direc-
tion register (PBDIR). The transparent handshake mode is shown in Figure 7-93.
7.13.7 Programming Model
The following paragraphs describe the PIP registers and parameter RAM.
7.13.7.1 PARAMETER RAM. At the time of writing, RISC operation on the PIP has not been
fully defined. The user should use the CPU32+ core operation mode until the RISC micro-
code becomes available or the full PIP microcode becomes available in the RISC internal
ROM. Please contact the local Motorola sales representative to obtain the current status of
the PIP RISC microcode.
7-338
At the time of writing, this operation of the PIP has not been fully
defined. This PIP operation may be implemented by the
CPU32+ core, using the port B parallel I/O registers and any port
C interrupt pin.
Figure 7-93. PIP Transparent Handshake Mode
READ FROM RISC
WRITE FROM RISC
Freescale Semiconductor, Inc.
For More Information On This Product,
MC68360 USER’S MANUAL
BUFFER
LATCH
Go to: www.freescale.com
NOTE
DIR = OUTPUT
I/O
PIN
MOTOROLA