2/24/2008 9T6WP
Preliminary Hardware Data Module
BCM7405
06/29/07
Hardware Signal Descriptions
Bro a d c o m Co rp o r a ti o n
Document
7405-1HDM00-R
Pin Definition Notations Page 1-107
1
14 - 64 Bit DDR2
SDRAM
DDR0_DQS0b
O
Ext PU
SSTL
_18
–
AM5
DDR DRAM Data Strobe
(low active) for 16-bit lane 0
1
14 - 64 Bit DDR2
SDRAM
DDR0_DQS1
O
Ext PU
SSTL
_18
–
AL4
DDR DRAM Data Strobe for
16-bit lane 0
1
14 - 64 Bit DDR2
SDRAM
DDR0_DQS1b
I/O
Ext PU
SSTL
_18
–
AL5
DDR DRAM Data Strobe
(low active) for 16-bit lane 0
1
14 - 64 Bit DDR2
SDRAM
DDR1_DQS0
I/O
Ext PU
SSTL
_18
–
W3
DDR DRAM Data Strobe for
16-bit lane 1
1
14 - 64 Bit DDR2
SDRAM
DDR1_DQS0b
I/O
Ext PU
SSTL
_18
–
Y2
DDR DRAM Data Strobe
(low active) for 16-bit lane 1
1
14 - 64 Bit DDR2
SDRAM
DDR1_DQS1
I/O
Ext PU
SSTL
_18
–
Y3
DDR DRAM Data Strobe for
16-bit lane 1
1
14 - 64 Bit DDR2
SDRAM
DDR1_DQS1b
I/O
Ext PU
SSTL
_18
–
AA2
DDR DRAM Data Strobe
(low active) for 16-bit lane 1
1
14 - 64 Bit DDR2
SDRAM
DDR2_DQS0
I/O
Ext PU
SSTL
_18
–
T4
DDR DRAM Data Strobe for
16-bit lane 1
1
14 - 64 Bit DDR2
SDRAM
DDR2_DQS0b
I/O
Ext PU
SSTL
_18
–
T5
DDR DRAM Data Strobe
(low active) for 16-bit lane 1
1
14 - 64 Bit DDR2
SDRAM
DDR2_DQS1
I/O
Ext PU
SSTL
_18
–
R4
DDR DRAM Data Strobe for
16-bit lane 2
1
14 - 64 Bit DDR2
SDRAM
DDR2_DQS1b
I/O
Ext PU
SSTL
_18
–
R5
DDR DRAM Data Strobe
(low active) for 16-bit lane 2
1
14 - 64 Bit DDR2
SDRAM
DDR3_DQS0
I/O
Ext PU
SSTL
_18
–
A3
DDR DRAM Data Strobe for
16-bit lane 3
1
14 - 64 Bit DDR2
SDRAM
DDR3_DQS0b
I/O
Ext PU
SSTL
_18
–
B3
DDR DRAM Data Strobe
(low active) for 16-bit lane 3
1
14 - 64 Bit DDR2
SDRAM
DDR3_DQS1
I/O
Ext PU
SSTL
_18
–
A2
DDR DRAM Data Strobe for
16-bit lane 3
1
14 - 64 Bit DDR2
SDRAM
DDR3_DQS1b
I/O
Ext PU
SSTL
_18
–
A1
DDR DRAM Data Strobe
(low active) for 16-bit lane 3
1
14 - 64 Bit DDR2
SDRAM
DDR01_RASb
I/O
Ext PU
SSTL
_18
–
AD3
DDR DRAM RAS signal for
16-bit lane 0 and 1
1
14 - 64 Bit DDR2
SDRAM
DDR23_RASb
I/O
Ext PU
SSTL
_18
–
G3
DDR DRAM RAS signal for
16-bit lane 2 and 3
1
14 - 64 Bit DDR2
SDRAM
DDR_VREF0
I/O
Ext PU
SSTL
_18
–
AP5
DDR DRAM voltage
reference for 16-bit lane 0
1
14 - 64 Bit DDR2
SDRAM
DDR_VREF1
O
Ext PU
SSTL
_18
–
A6
DDR DRAM voltage
reference for 16-bit lane 1
1
14 - 64 Bit DDR2
SDRAM
DDR01_WEb
O
Ext PU
SSTL
_18
–
AD2
DDR DRAM WEB for 16-bit
lane 0 and 1
1
14 - 64 Bit DDR2
SDRAM
DDR23_WEb
O
Ext PU
SSTL
_18
–
F2
DDR DRAM WEB for 16-bit
lane 2 and 3
PCI Bus – 55
1
1 - PCI Bus/EBI
PCI_AD00
I/O
Ext PU
3.3
–
AP20
PCI Address / Data bus.
Shared with EBI_DATA0
Table 1-19: Pin Descriptions (Cont.)
# of
Pins
Orcad Schematic
Block
Label
I/O
Res.
Tol.
(V)
Drv.
(mA)
Loc.
Description