2/24/2008 9T6WP
BCM7405 Preliminary Hardware Data Module
Hardware Signal Descriptions 06/29/07
Broadcom Corporation
Page 1-110 Pin Definition Notations Document 7405-1HDM00-R
1 1 - PCI Bus/EBI PCI_INT_A1 I Ext PU 3.3 – AP31 PCI interrupt[2:1] inputs
1 1 - PCI Bus/EBI PCI_INT_A2 I Ext PU 3.3 – AN31 PCI interrupt[2:1] inputs
1 1 - PCI Bus/EBI PCI_REQ0b I Ext PU 3.3 – AK29 PCI bus request 0
1 1 - PCI Bus/EBI PCI_GNT0b O – 3.3 – AL29 PCI bus grant 0
1 1 - PCI Bus/EBI PCI_REQ1b I Ext PU 3.3 – AM30 PCI bus request 1. ID
Select for the BCM7400 in
client mode
1 1 - PCI Bus/EBI PCI_GNT1b I/O – 3.3 – AL30 PCI bus grant 1
1 1 - PCI Bus/EBI PCI_REQ2b I/O Ext PU 3.3 – AP19 PCI bus request 2. Shared
with EBI_CS4b
1 1 - PCI Bus/EBI PCI_GNT2b I/O Ext PU 3.3 – AK28 PCI bus grant 2. Shared
with EBI_CS5b
POD Support - 1
1 2 - Extended Bus
Interface/Reset In/Out
EBI_TA2b I – 3.3 8 AP16 Secondary Transaction
acknowledge (for POD
WAITb)
External Bus Interface – 17+B63 (External Bus Mastering for test)
1 2 - Extended Bus
Interface/Reset In/Out
EBI_NAND_R
Bb
I/OD Ext PU 3.3 8 AK16 EBI Address bus. Shared
with NAND FLASH R/B
control
1 2 - Extended Bus
Interface/Reset In/Out
EBI_ADDR24 S/O – 3.3 8 AN19 EBI Address bus.
1 2 - Extended Bus
Interface/Reset In/Out
EBI_ADDR25 S/O – 3.3 8 AL16 EBI Address bus.
1 2 - Extended Bus
Interface/Reset In/Out
EBI_ADDR26 S/O – 3.3 8 AK18 EBI Address bus.
1 2 - Extended Bus
Interface/Reset In/Out
EBI_ADDR27 S/O – 3.3 8 AL18 EBI Address bus.
1 2 - Extended Bus
Interface/Reset In/Out
EBI_CS0b O PU 3.3 8 AM16 EBI Chip Selects. Shared
with NAND FLASH CE
1 2 - Extended Bus
Interface/Reset In/Out
EBI_CS1b O PU 3.3 8 AM17 EBI Chip Selects. Shared
with NAND FLASH CE (if
CS swap is strapped)
1 2 - Extended Bus
Interface/Reset In/Out
EBI_CS2b I/O PU 3.3 8 AM15 EBI Chip Select 2. Shared
with PCI REQ 3
1 2 - Extended Bus
Interface/Reset In/Out
EBI_CS3b O PU 3.3 8 AN15 EBI Chip Select 3. Shared
with PCI bus grant 3
1 2 - Extended Bus
Interface/Reset In/Out
EBI_RWb S/O – 3.3 8 AN16 EBI Read / Write
1 2 - Extended Bus
Interface/Reset In/Out
EBI_WE0b S/O – 3.3 8 AP17 Write control for 8 or 16-bit
devices. Shared with NAND
FLASH WE
1 2 - Extended Bus
Interface/Reset In/Out
EBI_WE1b S/O – 3.3 8 AK15 Write control for 8 or 16-bit
devices
Table 1-19: Pin Descriptions (Cont.)
# of
Pins
Orcad Schematic
Block
Label I/O Res.
Tol.
(V)
Drv.
(mA)
Loc. Description
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