Address Multiplexing
Signals A[0] - A[13] on each RAM SO-DIMM make up a 14-bit multiplexed address bus that can support several different types of SDRAM devices.
Table 4-7
lists the types of devices that can be used in this computer by size, configuration, and sizes of row and column addresses.
Table 4-7
Types of DRAM devices
Device size
|
Device
configuration
|
Size of
row address
|
Size of
column
address
|
16 Mbits
|
2M x 4 x 2
|
11
|
10
|
16 Mbits
|
1M x 8 x 2
|
11
|
9
|
16 Mbits
|
512K x 16 x 2
|
11
|
8
|
64 Mbits
|
8M x 4 x 2
|
13
|
10
|
64 Mbits
|
4M x 4 x 4
|
12
|
10
|
64 Mbits
|
4M x 8 x 2
|
13
|
9
|
64 Mbits
|
2M x 8 x 4
|
12
|
9
|
64 Mbits
|
2M x 16 x 2
|
13
|
8
|
64 Mbits
|
1M x 16 x 4
|
12
|
8
|
64 Mbits
|
1M x 32 x 2
|
13
|
7
|
64 Mbits
|
512K x 32 x 4
|
12
|
7
|
128 Mbits
|
4M x 8 x 4
|
13
|
9
|
128 Mbits
|
2M x 16 x 4
|
13
|
8
|
IMPORTANT
The PowerBook G3 Series computer supports only the types of SDRAM devices specified in
Table 4-7
. Other types of DRAM devices should not be used with this computer.
© 1999 Apple Computer, Inc. (Last Updated 29 April 99)