spd6722qcce Intel Corporation, spd6722qcce Datasheet - Page 22

• Manufacturer Part Number: spd6722qcce
• Description: Isa-to-pc-card Pcmcia Controllers
• Manufacturer: Intel Corporation

PD6710/’22 — ISA-to-PC-Card (PCMCIA) Controllers
22
-CD[2:1]
-CE[2:1]
RESET
Pin Name
1.
2.
1
A_A[25:0] and B_A[25:0] are the independent address buses to the sockets.
2
Table 2.
To differentiate the sockets, all PD6722 pin names have either A_ or B_ prepended to the pin names indicated. For example,
When a socket is configured as an ATA drive interface, socket interface pin functions change. See
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.
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.
Reset: This output will be high to reset
the card and low for normal operation.
To reduce power consumption of idle
cards and to prevent reset glitches to a
card, this signal is high-impedance
unless a card is fully seated in the
socket and card interface signals are
enabled.
Socket Interface Pins (Sheet 3 of 4)
Description
2
PD6710
70, 10
25, 22
51
Pin Number
Socket A
69, 10
22, 19
51
PD6722
Socket B
132, 73
86, 83
114
Qty.
2
2
1
Table 17 on page
O-TS
O-TS
I-PU
I/O
2 or 3
2 or 3
Pwr.
Datasheet
1
88.
Drive
2 mA
2 mA
–