MC68MH360EM25L Freescale Semiconductor, MC68MH360EM25L Datasheet - Page 68

• 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: -

Freescale Semiconductor, Inc.
QUICC Memory Map
MBAR (SIM)
DPRBASE (DUAL-PORT RAM BASE)
DUAL-PORT RAM
4KB
REGB (REGISTER BASE) = DPRBASE + 4K
INTERNAL
4KB
REGISTERS
Figure 3-1. QUICC Memory Map
3.1 DUAL-PORT RAM MEMORY MAP
The internal 2816-byte (2560-byte on REV A and B mask) dual-port RAM is partitioned to
1792 bytes (1536 bytes on REV A and B mask) of system RAM, 256-byte microcode scratch
area, and 768 bytes of parameter RAM (see Table 3-1). Its base address, called dual-port
RAM base (DPRBASE), is the address pointed to by the MBAR.
NOTE
Rev A mask is C63T, Rev B mask are C69T, and F35G
The system RAM may be used for microcode program area, data area, and buffer descrip-
tors (BDs). It may be partitioned in several ways, allowing programmable partition sizes to
fit the system requirements. This is described in Section 7 Communication Processor Mod-
ule (CPM).
3-2
MC68360 USER’S MANUAL
MOTOROLA
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