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IDT723614L15

CMOS SyncBiFIFO WITH BUS MATCHING AND BYTE SWAPPING 64 x 36 x 2

Integrated Device Technology 

IDT723614 CMOS SyncBiFIFO™ WITH BUS MATCHING AND BYTE SWAPPING

64 x 36 x 2

COMMERCIAL TEMPERATURE RANGE

DESCRIPTION:

The IDT723614 is a monolithic, high-speed, low-power

BiCMOS bidirectional clocked FIFO memory. It supports

clock frequencies up to 67MHz and has read access times as

fast as 10ns. Two independent 64 x 36 dual-port SRAM FIFOs

on board the chip buffer data in opposite directions. Each

FIFO has flags to indicate empty and full conditions and two

programmable flags (almost-full and almost-empty) to indi-

cate when a selected number of words is stored in memory.

FIFO data on port B can be input and output in 36-bit, 18-bit,

and 9-bit formats with a choice of big- or little-endian configu-

rations. Three modes of byte-order swapping are possible

with any bus size selection. Communication between each

port can bypass the FIFOs via two 36-bit mailbox registers.

Each mailbox register has a flag to signal when new mail has

been stored. Parity is checked passively on each port and may

be ignored if not desired. Parity generation can be selected for

data read from each port. Two or more devices can be used

in parallel to create wider data paths.

The IDT723614 is a clocked FIFO, which means each port

employs a synchronous interface. All data transfers through a

port are gated to the LOW-to-HIGH transition of a continuous

(free-running) port clock by enable signals. The clocks for

each port are independent of one another and can be asyn-

PIN CONFIGURATIONS

GND

AEA

18

19

EFA 20

A0 21

A1 22

A2 23

GND 24

A3 25

A4 26

A5 27

A6 28

VCC 29

A7 30

A8 31

A9 32

GND 33

A10 34

A11 35

VCC 36

A12 37

A13 38

A14 39

GND 40

A15 41

A16 42

A17 43

A18 44

A19 45

A20 46

GND 47

A21 48

A22 49

A23 50

116 GND

115 AEB

*

114 EFB

113 B0

112 B1

111 B2

110 GND

109 B3

108 B4

107 B5

106 B6

105 VCC

104 B7

103 B8

102 B9

101 GND

100 B10

99 B11

98 VCC

97 B12

96 B13

95 B14

94 GND

93 B15

92 B16

91 B17

90 B18

89 B19

88 B20

87 GND

86 B21

85 B22

84 B23

*Electrical pin 1 in center of beveled edge. Pin 1 identifier in corner.

3146 drw 02

NOTES:

1. NC - No internal connection.

2. Uses Yamaichi socket IC51-1324-828.

PQFP (PQ132-1, order code: PQF)

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