CL-PD6722 datasheet(16/128 Pages) CIRRUS

16 / 128 page

PRELIMINARY DATA SHEET v3.1

CL-PD6710/’22

ISA–to–PC-Card Host Adapters

May 1997

PIN INFORMATION

Table 2-2.

Socket Interface Pins

Pin Name1

Description2

Pin Number

Qty

I/O

Pwr.

Drive

CL-PD6710

CL-PD6722

Socket A

Socket B

-REG

Interface mode, this output chooses

between attribute and common mem-

ory. In I/O Card Interface mode for

non-DMA transfers, this signal is active

(low).

For DMA cycles on the CL-PD6722 to

a DMA-capable card, -REG is inactive

during I/O cycles to indicate a DMA

cycle to or from the PC Card.

In ATA mode, this signal is always

inactive.

O-TS

2 or 3

2 mA

A[25:0]

PC Card socket address outputs.

48, 46, 44,

42, 40, 38,

36, 34, 32,

41, 43, 35,

33, 45, 27,

24, 29, 31,

47, 49, 50,

53, 56, 58,

59, 61

48, 46, 44,

42, 40, 38,

36, 34, 32,

41, 43, 35,

33, 45, 25,

21, 28, 30,

47, 49, 50,

53, 55, 57,

58, 60

110, 108,

106, 104,

102, 100,

98, 96, 94,

103, 105,

97, 95,

107, 89,

85, 91, 93,

109, 112,

113, 115,

118, 120,

121, 123

O-TS

2 or 3

2 mA

D[15:0] †

PC Card socket data I/O signals.

23, 21, 17,

14, 12, 68,

66, 64, 19,

15, 13, 11,

9, 67, 65, 63

20, 18, 16,

14, 12, 67,

65, 63, 17,

15, 13, 11,

9, 66, 64,

84, 82, 80,

77, 75,

130, 128,

126, 81,

78, 76, 74,

72, 129,

127, 125

I/O

2 or 3

2 mA

-OE

Output Enable: For non-DMA trans-

fers, this output goes active (low) to

indicate a memory read from the

socket.

During a DMA write (when -IORD is

active) this output goes low if the ISA

output TC is active (high), indicating to

the card that the system’s terminal

count signal is active. During DMA

reads (when -IOWR is active), this out-

put remains high.

O-TS

2 or 3

2 mA

1 To differentiate the sockets, all CL-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 When a socket is configured as an ATA drive interface, socket interface pin functions change. See Table 11-1 on page 75.

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