PD6710 Datasheet, PDF (22/138 Pages) Intel Corporation – ISA-to-PC-Card (PCMCIA) Controllers

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