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 1-115
Miscellaneous Signals – 125
1
2 - Extended Bus
Interface/Reset In/Out
RESETb
STI
PU
3.3
AP13
Hardware reset control
(GLOBAL RESET)
1
2 - Extended Bus
Interface/Reset In/Out
RESET_OUTb
O
3.3
8
AK34
External reset control
(GLOBAL RESET)
1
2 - Extended Bus
Interface/Reset In/Out
NMIb
STI
PU
3.3
AM13
Power failure indicator (This
is a non maskable interrupt
to the MIPS)
1
2 - Extended Bus
Interface/Reset In/Out
FP_4SEC_RE
SETb
STI
PU
3.3
AN13
Long Front Panel Reset
Input
1
16 - GPIO
GPIO_000
STI/O
5
12
A16
Generic I/O port. Shared
with ENET_ACTIVITY /
ENET_LINK / Ext. IRQb_13
1
16 - GPIO
GPIO_001
STI/O
5
12
C16
Generic I/O port. Shared
with ENET_LINK /
ENET_ACTIVITY / Ext.
IRQb_14
1
16 - GPIO
GPIO_002
STI/O
PD
3.3
8
AB34
Generic I/O port. Shared
with MII_RX_CLK / Ext.
IRQb_0 / EXT_GFX_09
1
16 - GPIO
GPIO_003
STI/O
PD
3.3
8
AB32
Generic I/O port. Shared
with MII_RX_EN /
UART_RXD_0 /
EXT_GFX_10 / Ext.
IRQb_5
1
16 - GPIO
GPIO_004
STI/O
PD
3.3
8
AA34
Generic I/O port. Shared
with MII_RXD_00 /
UART_TXD_0 /
EXT_GFX_11 / Ext.
IRQb_6
1
16 - GPIO
GPIO_005
STI/O
PD
3.3
8
AA33
Generic I/O port. Shared
with MII_RXD_01 /
UART_CTS_0 /
EXT_GFX_12 / Ext.
IRQb_7 / VEC_HSYNC_0
1
16 - GPIO
GPIO_006
STI/O
PD
3.3
8
AA32
Generic I/O port. Shared
with MII_RXD_02 /
UART_RTS_0 /
EXT_GFX_13 / Ext.
IRQb_8 / VEC_HSYNC_1
1
16 - GPIO
GPIO_007
STI/O
PD
3.3
8
Y33
Generic I/O port. Shared
with MII_RXD_03 /
UART_RXD_1 /
EXT_GFX_14 / Ext.
IRQb_9
1
16 - GPIO
GPIO_008
STI/O
PD
3.3
8
Y30
Generic I/O port. Shared
with MII_RX_ER /
UART_TXD_1 /
EXT_GFX_15 / Ext.
IRQb_10
Table 1-19: Pin Descriptions (Cont.)
# of
Pins
Orcad Schematic
Block
Label
I/O
Res.
Tol.
(V)
Drv.
(mA)
Loc.
Description