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MFC2000 Datasheet(PDF) 411 Page - List of Unclassifed Manufacturers

Part # MFC2000
Description  Multifunctional Peripheral Controller 2000
PDF  426 Pages
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Manufacturer  ETC [List of Unclassifed Manufacturers]
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MFC2000 Datasheet(HTML) 411 Page - List of Unclassifed Manufacturers

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Hardware Description
MFC 2000 Multifunctional Peripheral Controller 2000
100723A
Conexant
24-25
Table 24-6. Untitled table
Address
Multiplexing
Register
SDRAM 64 Mb
(16 bit data bus)
(14 x 8)
SDRAM 64 Mb
(8-bit data bus)
(14 x 9)
SDRAM 16 Mb
(16 bit data bus)
(12 x 8)
SDRAM 16 Mb
(8 bit data bus)
(12 x 9)
External Address
ROW
COL.
ROW
COL.
ROW
COL.
ROW
COL.
MA[12]/BA[1]
A[21]
A[21]
A[21]
A[21]
0
0
0
0
MA[11]/BA[0]
A[20]
A[20]
A[20]
A[20]
0
0
0
0
MA[10]/EA[11]
A[19]
0
A[19]
0
A[19]
A[19]
A[19]
A[19]
MA[9]/EA[10]
A[18]
0
1
A[18]
0
1
A[18]
0
1
A[18]
0
1
MD[0]/EA[9]
A[17]
NC
3
A[17]
NC
3
A[17]
NC
3
A[17]
NC
3
MA[8]/EA[8]
A[16]
0
A[16]
(0 or 1)
2
A[16]
0
A[16]
(0 or 1)
2
MA[7]/EA[7]
A[15]
A[7]
A[15]
A[7]
A[15]
A[7]
A[15]
A[7]
MA[6]/EA[6]
A[14]
A[6]
A[14]
A[6]
A[14]
A[6]
A[14]
A[6]
MA[5]/EA[5]
A[13]
A[5]
A[13]
A[5]
A[13]
A[5]
A[13]
A[5]
MA[4]/EA[4]
A[12]
A[4]
A[12]
A[4]
A[12]
A[4]
A[12]
A[4]
MA[3]/EA[3]
A[11]
A[3]
A[11]
A[3]
A[11]
A[3]
A[11]
A[3]
MA[2]/EA[2]
A[10]
A[2]
A[10]
A[2]
A[10]
A[2]
A[10]
A[2]
MA[1]/EA[1]
A[9]
A[1]
A[9]
A[1]
A[9]
A[1]
A[9]
A[1]
MA[0]/EA[0]
A[8]
A[0]
A[8]
A[0]
A[8]
A[0]
A[8]
A[0]
1.
EA[10] is used on SDRAMs for auto-precharge during column access. Auto-precharge will not be utilized by
CDRAM so EA[10] will always be set to 0 during column access.
2.
EA[8] will be used as the byte control bit for 8-bit SDRAMs. Addresses sent to CDRAM from the CBU will
always be halfword addressable. In order to communicate with 8-bit SDRAMs, CDRAM toggles EA[8] and
obtains two sequential pieces of 8-bit data and sends it back to the system as one 16-bit data chunk.
3.
Since MD[0] is used both as a data pin and an address pin, during the column portion of a SDRAM access,
the SDRAM will not read from the EA[9] pin. So EA[9] is no-care [NC] during this time. Although at that time,
MD[0] may very well be carrying valid data to the data bus.



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