PCI1451 Datasheet, PDF (25/141 Pages) Texas Instruments – PC Card Controller

TERMINAL
NAME
NO.
INTA
(MFUNC0)
W10
INTB
(MFUNC1)
P10
IRQSER
P12
MFUNC6
MFUNC5
MFUNC4
MFUNC4
MFUNC3
MFUNC3
MFUNC2
MFUNC1
MFUNC0
RI_OUT/PME
R5
W5
T9
T9
R9
R9
P9
P10
W10
R11
TERMINAL
NAME
NO.
PCGNT
(MFUNC2)
P9
PCGNT
(MFUNC3)
R9
PCREQ
(MFUNC7)
N19
PCREQ
(MFUNC4)
T9
PCREQ
(MFUNC0)
W10
Table 2–9. System Interrupt
I/O
FUNCTION
Parallel PCI interrupt. INTA can be mapped to MFUNC0 when parallel PCI interrupts are used.
I/O _{See Section 3.5, Programmable Interrupt Subsystem, for details on interrupt signaling. MFUNC0/INTA}
defaults to a general-purpose input.
Parallel PCI interrupt. INTB can be mapped to MFUNC1 when parallel PCI interrupts are used.
I/O _{See Section 3.5, Programmable Interrupt Subsystem, for details on interrupt signaling. MFUNC1/INTB}
defaults to a general-purpose input.
Serial interrupt signal. IRQSER provides the IRQSER-style serial interrupting scheme. Serialized PCI
I/O interrupts can also be sent in the IRQSER stream. See Section 3.5, Programmable Interrupt Subsystem,
for details on interrupt signaling.
Interrupt request/secondary functions multiplexed. The primary function of these terminals is to provide
programmable options supported by the PCI4450. These interrupt multiplexer outputs can be mapped to
various functions. See Section 4.36, Multifunction Routing Status Register, for options.
O
All of these terminals have secondary functions, such as PCI interrupts, PC/PCI DMA, GPE request/grant,
ring indicate output, and zoomed video status, that can be selected with the appropriate programming of
this register. When the secondary functions are enabled, the respective terminals are not available for
multifunction routing.
See Section 4.36, Multifunction Routing Status Register, for programming options.
O
Ring indicate out and power management event output. Terminal provides an output to the system for
ring-indicate or PME signals. Alternately, RI_OUT can be routed on MFUNC7.
Table 2–10. PC/PCI DMA
I/O
FUNCTION
PC/PCI DMA grant. PCGNT is used to grant the DMA channel to a requester in a system supporting the
I/O ^{PC/PCI DMA scheme. PCGNT, is available on MFUNC2 or MFUNC3.}
This terminal is also used for the serial EEPROM interface.
PC/PCI DMA request. PCREQ is used to request DMA transfers as DREQ in a system supporting the
O ^{PC/PCI DMA scheme. PCREQ is available on MFUNC7, MFUNC4, or MFUNC0.}
This terminal is also used for the serial EEPROM interface.
2–11