Functional Architecture; Processor Subsystem; Slot-1 Processor Socket Pinout; Processor Upgrade - BCM Advanced Research IN440EX User Manual

Functional Architecture

Processor Subsystem

The Pentium® II processor connects with the system through a 242-pin connector type socket on the circuit board
labelled SLOT-1. The 242-pin configuration corresponds to a standard pinout that can accommodate the following
processors:
Intel Pentium™ II Processor with MMX (Celeron)
Intel Pentium™ II Processor with MMX (Klamath)
Intel Pentium™ II Processor with MMX (Deschutes)

SLOT-1 Processor Socket Pinout

The 242-pin connector is provided to allow for easy configuration at the time of manufacture or as a field upgrade
of the microprocessor.
Reference:
Connector Type:
Connector Part Number:

Processor Upgrade

The Pentium™ II processor maybe removed and replaced to accommodate Kamath or "Deschutes". Changes to
the VCORE (Core Voltage Selection) are automatically adjusted.

Processor Heat Sink

The IN440EX M/B provides 12V power for the cooling fan through a 3-pin header with Fan-On control and Fan
Speed detection.

Memory Subsystem

DRAM Subsystem

The IN440EX has two 64-bit (168-pin) DIMM sockets (DIMM0 and DIMM1) allowing system memory from 8
MB to 256MB of main DRAM. There are no jumpers settings required for the memory size, which is
automatically detected by the system BIOS.
The DIMMs are rated 66 MHz (Klamath) or 100 MHz (Deschutes) SDRAM (Synchronous DRAM). DIMM
modules must be 'Unbuffered' and operate at 3.3V. All the allowable memory size configurations are described
on table 2.1 (Refer to Table 3.6 in the "Configuration" section for the different combinations and sizes of
DIMMs).
Table 2.2. DRAM memory configurations in
8 16
64 72
144 176
BCM Advanced Research
SLOT-1
Female, 242 pin Dimm
Molex 71796-0001 (Or equivalent)
24 32 40
80 96 128
192 256
34
Megabytes.
48
136