PD6710 Просмотр технического описания (PDF) - Intel

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PD6710

ISA-to-PC-Card (PCMCIA) Controllers

Intel 

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

Table 2. Socket Interface Pins (Sheet 3 of 4)

Pin Number

Pin Name1

Description2

PD6710

PD6722

Qty. I/O Pwr. Drive

Socket A Socket B

-CD[2:1]

Card Detect: These inputs indicate to

the PD67XX the presence of a card in

the socket. They are pulled high

internally in the chip.

70, 10

69, 10

132, 73

2 I-PU 1

–

-CE[2:1]

Card Enable: These outputs are driven

low by the PD67XX during card access

cycles to control byte/word card

access. -CE1 enables even-numbered

address bytes and -CE2 enables odd-

numbered address bytes. When

configured for 8-bit cards, only -CE1 will

be active and A0 will be set to ‘1’ for

odd-byte accesses.

25, 22

22, 19

86, 83

2 O-TS 2 or 3 2 mA

Reset: This output will be high to reset

the card and low for normal operation.

To reduce power consumption of idle

RESET

cards and to prevent reset glitches to a

card, this signal is high-impedance

51

unless a card is fully seated in the

socket and card interface signals are

enabled.

51

114

1 O-TS 2 or 3 2 mA

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.

22

Datasheet

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