Table 2−9. Multifunction and Miscellaneous Terminals
The power rail designation is not applicable for the multifunction and miscellaneous terminals.
TERMINAL
NAME
I/O
TYPE
PU/
PD
EXTERNAL
COMPONENTS
PIN STRAPPING
(IF UNUSED)
DESCRIPTION
INPUT OUTPUT
LVCO1
NO.
USB enable. These output terminals control an
external CBT switch for each socket when an USB
card is inserted into the socket.
E02
E01
A_USB_EN
B_USB_EN
O
CBT switch
Float
48 MHz clock
source
CLK_48
MFUNC0
MFUNC1
MFUNC2
MFUNC3
MFUNC4
MFUNC5
MFUNC6
NC
M01 A 48-MHz clock must be connected to this terminal.
I
LVCI1
10-kΩ to 47-kΩ
pullup resistor
N03
M05
I/O
I/O
I/O
I/O
I/O
I/O
I/O
PCII3
PCII3
PCII3
PCII3
PCII3
PCII3
PCII3
PCIO3
PCIO3
PCIO3
PCIO3
PCIO3
PCIO3
PCIO3
10-kΩ to 47-kΩ
pullup resistor
10-kΩ to 47-kΩ
pullup resistor
P01
Multifunction terminals 0−6. See Section 4.36,
10-kΩ to 47-kΩ
pullup resistor
P02
P03
N05
R01
W17
R17
Multifunction Routing Status Register, for
configuration details.
10-kΩ to 47-kΩ
pullup resistor
10-kΩ to 47-kΩ
pullup resistor
10-kΩ to 47-kΩ
pullup resistor
Reserved. This terminal has no connection
anywhere within the package.
Float
NA
PHY_TEST_
MA
PHY test pin. Not for customer use. It must be pulled
high with a 4.7-kΩ resistor.
I
LVCI1
PD1
Ring indicate out and power management event
output. This terminal provides an output for
ring-indicate or PME signals.
RI_OUT/
PME
Pullup resistor per
PCI specification
T03
T19
O
—
LVCO2
NA
Reserved. This terminal has no connection
anywhere within the package.
RSVD
SCL
Float
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
Pullup resistor per
2
I C specification
Tie to GND if not
using EEPROM
(value depends on
EEPROM,
M03 open-drain. For normal operation (a ROM is
implemented in the design), this terminal must be
I/O
TTLI1
TTLO1
typically 2.7 kΩ)
pulled high to the ROM V
Otherwise, it must be pulled low to ground with a
with a 2.7-kΩ resistor.
DD
220-Ω resistor.
Serial data. This terminal is implemented as
open-drain, and for normal operation (a ROM is
implemented in the design), this terminal must be
Pullup resistor per
I C specification
(value depends on
EEPROM,
typically 2.7 kΩ)
2
Tie to GND if not
using EEPROM
SDA
M02
L07
I/O
O
TTLI1
TTLO1
TTLO1
pulled high to the ROM V
Otherwise, it must be pulled low to ground with a
with a 2.7-kΩ resistor.
DD
220-Ω resistor.
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.
10-kΩ to 47-kΩ
pulldown resistor
10-kΩ to 47-kΩ
pulldown resistor
SPKROUT
Suspend. SUSPEND protects the internal registers
from clearing when the GRST or PRST signal is
asserted. See Section 3.8.5, Suspend Mode, for
details.
10-kΩ to 47-kΩ
pullup resistor
10-kΩ to 47-kΩ
pullup resistor
SUSPEND
TEST0
R02
P12
I
PCII6
LVCI1
Terminal TEST0 is used for factory test of the
controller and must be connected to ground for
normal operation.
I/O
PD1
Tie to GND
2−18
TI [ TEXAS INSTRUMENTS ]
