PCI1131 Datasheet, PDF (8/26 Pages) Texas Instruments – PCI-TO-CARDBUS CONTROLLER UNIT

PCI1131
PCI-TO-CARDBUS CONTROLLER UNIT
XCPS011 – DECEMBER 1997
Terminal Functions (Continued)
PC Card power switch
TERMINAL
NAME NO.
CLOCK 151
DATA
152
LATCH 150
I/O
TYPE
O
O
O
FUNCTION
Power switch clock. Information on the DATA line is sampled at the rising edge of CLOCK. The frequency of
the clock is derived from dividing PCICLK by 36. The maximum frequency of CLOCK is 2 MHz.
Power switch data. DATA is used by the PCI1131 to serially communicate socket power control information.
Power switch latch. LATCH is asserted by the PCI1131 to indicate to the PC Card power switch that the data
on the DATA line is valid.
interrupt
TERMINAL
NAME
IRQ3/INTA
IRQ4/INTB
IRQ7/PCDMAREQ
IRQ9/IRQSER
IRQ10/CLKRUN
IRQ12/CLKRUN
IRQ11/PCDMAGNT
IRQ5
IRQ14
IRQ15/RI_OUT
I/O
NO. ^TYPE
FUNCTION
Interrupt request 3 and interrupt request 4. IRQ3/INTA–IRQ4/INTB can be connected to either PCI
154
155
O
or ISA interrupts. IRQ3/INTA–IRQ4/INTB are software configurable as IRQ3 or INTA and as IRQ4
or INTB. When configured for IRQ3 and IRQ4, IRQ3/INTA–IRQ4/INTB must be connected to the ISA
IRQ programmable interrupt controller. When IRQ3/INTA–IRQ4/INTB are configured for INTA and
INTB, IRQ3/INTA–IRQ4/INTB must be connected to interrupts on the PCI bus.
Interrupt request 7. IRQ7/PCDMAREQ is software configurable and is used by the PCI1131 to
157
O
request PC/PCI DMA transfers from chipsets that support the PC/PCI DMA scheme. When
IRQ7/PCDMAREQ is configured for PC/PCI DMA request (IRQ7), it must be connected to the
appropriate request (REQ) pin on the Intel Mobile Triton PCI I/O accelerator (MPIIX™).
Interrupt request 9/serial IRQ. IRQ9/IRQSER is software configurable and indicates an interrupt
request from a PC Card to the PCI1131. When IRQ9/IRQSER is configured for IRQ9, it must be
158 O connected to the system programmable interrupt controller. IRQSER allows all IRQ signals to be
I/O serialized onto one pin. IRQ9/IRQSER is configured via bits 2–1 in the device control register of the
TI extension registers.
Interrupt request 10 and 12. IRQ10/CLKRUN and IRQ12/CLKRUN are software configurable and
159
161
I/O
used by the PCI1131 to support the PCI clock run protocol. When configured as CLKRUN by setting
bit 0 in the system control register offset 80h, this terminal is an open-drain output. To select between
IRQ10 and IRQ12 as the output, use bit 7 of register 80h.
Interrupt request 11. IRQ11/PCDMAGNT is software configurable and is used by the PCI1131 to
160
I/O
accept a grant for PC/PCI DMA transfers from chipsets that support the PC/PCI DMA scheme. When
IRQ11/PCDMAGNT is configured for PC/PCI DMA grant (IRQ11), it must be connected to the
appropriate grant (GNT) pin on the Intel MPIIX controller.
156
162
O
Interrupt request 5 and 14. These signals are ISA interrupts. These terminals indicate an interrupt
request from one of the PC Cards. The interrupt mode is selected in the device control register of
the TI extension registers.
Interrupt request 15. IRQ15/RI_OUT indicates an interrupt request from one of the PC Cards.
163 I/O RI_OUT allows the RI input from the 16-bit PC Card to be output to the system. IRQ15/RI_OUT is
configured in the card control register of the TI extension registers.
speaker control
TERMINAL
NAME NO.
SPKROUT/
SUSPEND
149
I/O
TYPE
O
FUNCTION
Speaker. SPKROUT carries the digital audio signal from the PC Card. SUSPEND places the PCI1131 in
suspend mode. SPKROUT/SUSPEND is configured in the card control register of the TI extension registers.
8
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265