PD6710 datasheet(23/138 Pages) INTEL

23 / 138 page

ISA-to-PC-Card (PCMCIA) Controllers — PD6710/’22

Datasheet

BVD2/

-SPKR/

-LED †

Battery Voltage Detect 2 / Speaker /

LED: In Memory Card Interface mode,

this input serves as the BVD2 or battery

warning status input.

In I/O Card Interface mode, this input

can be configured as a card’s -SPKR

binary audio input. For disk-drive

support, BVD2/-SPKR/-LED can also

be configured as a drive-status LED

input.

In DMA mode, this pin can be

programmed as the -DREQ input from

a DMA-capable PC Card.

122

I-PU

2 or 3

–

BVD1/

-STSCHG/

-RI †

Battery Voltage Detect 1 / Status

Change / Ring Indicate: In Memory

Card Interface mode, this input serves

as BVD1 (Battery Dead Status) input.

In I/O Card Interface mode, this input is

the -STSCHG input, which indicates to

the PD67XX that the card’s internal

status has changed. In I/O Card

Interface mode, this input can

alternately be used as -RI ring indicate

when IRQ15/RI_OUT* is configured for

RI Out (see “Bit 7 — IRQ15 Is RI Out”

on page 74).

124

I-PU

2 or 3

–

SOCKET_

VCC

Connect these pins to the VCC supply

of the socket (pins 17 and 51 of the

respective PC Card socket). These pins

can thus be 0, 3.3, or 5 V, depending

on card presence, card type, and

system configuration. The socket

interface outputs (listed in this table) will

operate at the voltage applied to these

pins, independent of the voltage

applied to other PD67XX pin groups.

18, 52

24, 52

88, 117

PWR

––

Table 2.

Socket Interface Pins (Sheet 4 of 4)

Pin Name1

Description2

Pin Number

Qty.

I/O

Pwr.

Drive

PD6710

PD6722

Socket A

Socket B

1. 1To differentiate the sockets, all PD6722 pin names have either A_ or B_ prepended to the pin names indicated. For example,

A_A[25:0] and B_A[25:0] are the independent address buses to the sockets.

2. 2When a socket is configured as an ATA drive interface, socket interface pin functions change. See Table 17 on page 88.

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