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IDT723613L30PF

CMOS Clocked FIFO With Bus Matching and Byte Swapping 64 x 36

Integrated Device Technology 

IDT723613 CMOS CLOCKED FIFO WITH BUS MATCHING AND BYTE SWAPPING

64 x 36

COMMERCIAL TEMPERATURE RANGES

DESCRIPTION (CONTINUED)

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

data on port B can be output in 36-bit, 18-bit, and 9-bit formats

with a choice of big- or little-endian configurations. Three

modes of byte-order swapping are possible with any bus-size

selection. Communication between each port can bypass the

FIFO 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 may be used in parallel to

create wider data paths.

The IDT723613 is a synchronous (clocked) FIFO, meaning

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

continuous clocks for each port are independent of one

another and can be asynchronous or coincident. The enables

for each port are arranged to provide a simple interface

between microprocessors and/or buses with synchronous

interfaces.

The Full Flag (FF) and Almost-Full (AF) flag of the FIFO are

two-stage synchronized to the port clock (CLKA) that writes

data into its array. The Empty Flag (EF) and Almost-Empty

(AE) flag of the FIFO are two-stage synchronized to the port

clock (CLKB) that reads data from its array.

The IDT723613 is characterized for operation from 0°C to

70°C.

PIN CONFIGURATION

A23 1

A22 2

A21 3

GND 4

A20 5

A19 6

A18 7

A17 8

A16 9

A15 10

A14 11

A13 12

A12 13

A11 14

A10 15

GND 16

A9 17

A8 18

A7 19

VCC 20

A6 21

A5 22

A4 23

A3 24

GND 25

A2 26

A1 27

A0 28

NC 29

NC 30

90 B22

89 B21

88 GND

87 B20

86 B19

85 B18

84 B17

83 B16

82 B15

81 B14

80 B13

79 B12

78 B11

77 B10

76 GND

75 B9

74 B8

73 B7

72 VCC

71 B6

70 B5

69 B4

68 B3

67 GND

66 B2

65 B1

64

63

B0

EF

62 AE

61 NC

NOTE:

1. NC = No internal connection

TQFP (PN120-1, order code: PF)

TOP VIEW

3145 drw 02

2

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