MC68MH360EM25L Freescale Semiconductor, MC68MH360EM25L Datasheet - Page 332

• 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: -

Dual-Port RAM
7.2.1 Command Register Examples
To perform a complete reset of the CP, the value $8001 should be written to the CR. Fol-
lowing this command, the CR will return the value $0000 in two clocks.
To execute an ENTER HUNT MODE command to SCC3, the value $0381 should be written
to the CR. While the command is executing, the CR will return the value $0381. When the
command has been completely executed, the CR will return the value $0380.
7.2.2 Command Execution Latency
The worst-case command execution latency is 120 clocks. The typical command execution
latency is about 40 clocks.
7.3 DUAL-PORT RAM
The CPM has 2560 bytes of static RAM configured as dual-port memory. The dual-port RAM
memory map is shown in Figure 7-2, and a block diagram is shown in Figure 7-3.
7-8
0 = The CP is ready to receive a new command.
1 = The CR contains a command that the CP is currently processing. The CP clears
this bit at the end of the command execution or after reset.
MBAR POINTS
TO THE BASE
Figure 7-2. Dual-Port RAM Memory Map
Freescale Semiconductor, Inc.
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BDs/DATA IN ANY UNUSED SPACE
PARAMETER RAM—768 BYTES
BDs/DATA/UCODE—512 BYTES
BDs/DATA/UCODE—256 BYTES
BDs/DATA/UCODE—512 BYTES
BDs/DATA—512 BYTES
TOTAL 2560 BYTES
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