
Introduction
33
September 2005
SCPS110
Table 212. Multifunction and Miscellaneous Terminals
The power rail designation is not applicable for the multifunction and miscellaneous terminals.
TERMINAL
DESCRIPTION
I/O
INPUT
OUTPUT
PU/
EXTERNAL
PIN STRAPPING
NAME
NO.
DESCRIPTION
I/O
TYPE
INPUT
OUTPUT
PU/
PD
EXTERNAL
COMPONENTS
PIN STRAPPING
(IF UNUSED)
CLK_48
F01
A 48-MHz clock must be connected to this
terminal.
I
LVCI1
48 MHz clock
source
MFUNC0
G01
I/O
PCII3
PCIO3
10-k
to 47-k
pullup resistor
MFUNC1
H05
I/O
PCII3
PCIO3
10-k
to 47-k
pullup resistor
MFUNC2
H02
Multifunction terminals 06. See Section 4.35,
I/O
PCII3
PCIO3
10-k
to 47-k
pullup resistor
MFUNC3
H01
Multifunction terminals 06. See Section 4.35,
Multifunction Routing Status Register, for
configuration details.
I/O
PCII3
PCIO3
10-k
to 47-k
pullup resistor
MFUNC4
J01
configuration details.
I/O
PCII3
PCIO3
10-k
to 47-k
pullup resistor
MFUNC5
J02
I/O
PCII3
PCIO3
10-k
to 47-k
pullup resistor
MFUNC6
J03
I/O
PCII3
PCIO3
10-k
to 47-k
pullup resistor
PHY_TEST_MA
P17
PHY test pin. Not for customer use. It must be
pulled high with a 4.7-k
resistor.
I
LCVI1
PU2
NA
RI_OUT / PME
L05
Ring indicate out and power management event
output. This terminal provides an output for
ring-indicate or PME signals.
O
LVCO2
Pullup resistor per
PCI specification
NA
SCL
G02
Serial clock. At PRST, the SCL signal is sampled
to determine if a two-wire serial ROM is present. If
the serial ROM is detected, then this terminal
provides the serial clock signaling and is
implemented as open-drain. For normal operation
(a ROM is implemented in the design), this
terminal must be pulled high to the ROM VDD with
a 2.7-k
resistor. Otherwise, it must be pulled low
to ground with a 220-
resistor.
I/O
TTLI1
TTLO2
Pullup resistor per
I2C specification
(value depends on
EEPROM,
typically 2.7 k
)
Tie to GND if not
using EEPROM
SDA
G03
Serial data. This terminal is implemented as
open-drain, and for normal operation (a ROM is
implemented in the design), this terminal must be
pulled high to the ROM VDD with a 2.7-k resistor.
Otherwise, it must be pulled low to ground with a
220-
resistor.
I/O
TTLI1
TTLO2
Pullup resistor per
I2C specification
(value depends on
EEPROM,
typically 2.7 k
)
Tie to GND if not
using EEPROM
SPKROUT
H03
Speaker output. SPKROUT is the output to the
host system that can carry SPKR or CAUDIO
through the controller from the PC Card interface.
SPKROUT is driven as the exclusive-OR
combination of card SPKR//CAUDIO inputs.
O
TTLO1
10-k
to 47-k
pulldown resistor
SUSPEND
J05
Suspend. SUSPEND protects the internal registers
from clearing when the GRST or PRST signal is
asserted. See Section 3.8.6, Suspend Mode, for
details.
I
LVCI2
10-k
to 47-k
pullup resistor
10-k
to 47-k
pullup resistor
TEST0
P12
Terminal TEST0 is used for factory test of the
controller and must be connected to ground for
normal operation.
I/O
LVCI1
PD1
Tie to GND
USB_EN
E10
USB enable. ThIs output terminal controlS an
external CBT switch for the socket when an USB
card is inserted into the socket.
O
LVCO1
CBT switch
Float