Datasheet
2−15
Table 2−10. Multifunction and Miscellaneous Terminals
TERMINAL
NAME
NO.
I/O DESCRIPTION
NAME
PDV GHK
I/O
DESCRIPTION
MFUNC0 156 D19 I/O
Multifunction terminal 0. MFUNC0 can be configured as parallel PCI interrupt INTA, GPI0, GPO0, socket
activity LED output, ZV switching output, CardBus audio PWM, GPE
, or a parallel IRQ. See
Section 4.30, Multifunction Routing Register, for configuration details.
MFUNC1 157 A16 I/O
Multifunction terminal 1. MFUNC1 can be configured as parallel PCI interrupt INTB, GPI1, GPO1, socket
activity LED output, ZV switching output, CardBus audio PWM, GPE
, or a parallel IRQ. See
Section 4.30, Multifunction Routing Register, for configuration details.
Serial data (SDA). When LATCH is detected low after the deassertion of GRST
, the MFUNC1 terminal
provides the SDA signaling for the serial bus interface. The two-terminal serial interface loads the
subsystem identification and other register defaults from an EEPROM after a PCI reset. See
Section 3.6.1, Serial Bus Interface Implementation, for details on other serial bus applications.
MFUNC2 159 E14 I/O
Multifunction terminal 2. MFUNC2 can be configured as GPI2, GPO2, socket activity LED output, ZV
switching output, CardBus audio PWM, GPE
, RI_OUT, D3_STAT, or a parallel IRQ. See Section 4.30,
Multifunction Routing Register, for configuration details.
MFUNC3/
IRQSER
160 F13 I/O
Multifunction terminal 3. MFUNC3 can be configured as a parallel IRQ or the serialized interrupt signal
IRQSER. This terminal is IRQSER by default. See Section 4.30, Multifunction Routing Register, for
configuration details.
MFUNC4 161 B15 I/O
Multifunction terminal 4. MFUNC4 can be configured as PCI LOCK, GPI3, GPO3, socket activity LED
output, ZV switching output, CardBus audio PWM, GPE
, D3_STAT, RI_OUT, or a parallel IRQ. See
Section 4.30, Multifunction Routing Register, for configuration details.
Serial clock (SCL). When LATCH is detected low after the deassertion of GRST, the MFUNC4 terminal
provides the SCL signaling for the serial bus interface. The two-terminal serial interface loads the
subsystem identification and other register defaults from an EEPROM after a PCI reset. See
Section 3.6.1, Serial Bus Interface Implementation, for details on other serial bus applications.
MFUNC5 162 A15 I/O
Multifunction terminal 5. MFUNC5 can be configured as GPI4, GPO4, socket activity LED output, ZV
switching output, CardBus audio PWM, D3_STAT
, GPE, or a parallel IRQ. See Section 4.30,
Multifunction Routing Register, for configuration details.
MFUNC6/
CLKRUN
163 C14 I/O
Multifunction terminal 6. MFUNC6 can be configured as a PCI CLKRUN or a parallel IRQ. See
Section 4.30, Multifunction Routing Register, for configuration details.
NC
—
81
E05
W11
No connect. These terminals have no connection anywhere within the package. Terminal E05 on the
GHK package is used as a key to indicate the location of the A1 corner of the BGA package. Terminals
W11 on the GHK package and 81 on the PDV package will be used as a 48-MHz clock input on
future-generation devices.
RI_OUT/PME 165 E13 O
Ring indicate out and power management event output. This terminal provides an output for ring-indicate
or PME
signals.
SPKROUT
152 F14 O
Speaker output. SPKROUT is the output to the host system that can carry SPKR or CAUDIO through
the PCI1520 from the PC Card interface. SPKROUT is driven as the exclusive-OR combination of card
SPKR//CAUDIO inputs.
SUSPEND 158 C15 I
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.