PCI4451 datasheet(37/216 Pages) TI

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2–19

Table 2–15. Miscellaneous Terminals

TERMINAL

NAME

GFN

NO.

GJG

NO.

I/O

FUNCTION

MFUNC0

W11

W10

I/O

Multifunction terminal 0. Defaults as a general-purpose input (GPI0), and can be programmed

to perform various functions. See Section 4.36, Multifunction Routing Status Register, for

configuration details.

MFUNC1

Y11

P10

I/O

Multifunction terminal 1. Defaults as a general-purpose input (GPI1), and can be programmed

to perform various functions. See Section 4.36, Multifunction Routing Status Register, for

configuration details.

MFUNC2

Y10

I/O

Multifunction terminal 2. Defaults as a general-purpose input (GPI2), and can be programmed

to perform various functions. See Section 4.36, Multifunction Routing Status Register, for

configuration details.

MFUNC3

V10

I/O

Multifunction terminal 3. Defaults as a general-purpose input (GPI3), and can be programmed

to perform various functions. See Section 4.36, Multifunction Routing Status Register, for

configuration details.

MFUNC4

I/O

Multifunction terminal 4. Defaults as a high-impedance reserved input, and can be

programmed to perform various functions. See Section 4.36, Multifunction Routing Status

MFUNC5

I/O

Multifunction terminal 5. Defaults as a high-impedance reserved input, and can be

programmed to perform various functions. See Section 4.36, Multifunction Routing Status

MFUNC6

I/O

Multifunction terminal 6. Defaults as a high-impedance reserved input, and can be

programmed to perform various functions. See Section 4.36, Multifunction Routing Status

IDSEL/MFUNC7

P20

N19

I/O

IDSEL and multifunction terminal 7. Defaults as IDSEL, but may be used as a multifunction

terminal. See Section 4.36, Multifunction Routing Status Register and Section 3.4, PC Card

Applications Overview, for configuration details.

SCL

W10

I/O

Serial ROM clock. This terminal provides the SCL serial clock signaling in a two-wire serial

ROM implementation, and is sensed at reset for serial ROM detection.

SDA

I/O

Serial ROM data. This terminal provides the SDA serial data signaling in a two-wire serial ROM

implementation.

SPKROUT

V11

T10

Speaker output. SPKROUT is the output to the host system that can carry SPKR or CAUDIO

through the PCI4451 from the PC Card interface. SPKROUT is driven as the XOR combination

of card SPKR//CAUDIO inputs.

SUSPEND

U11

R10

Suspend. SUSPEND is used to protect the internal registers from clearing when PRST is

asserted. See Section 3.6.6, Suspend Mode for details.

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