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Rad. Tolerant High Speed 16 Kb x 9 Parallel FIFO with Programmable Flag

Atmel Corporation 

M672061H

Table 1. Programmable Half Full Flag Offset

I8

I7

I6

I5

I4

I3

I2

I1

I0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1

0

0

0

0

0

0

0

1

0

...

1

0

0

0

0

0

0

0

0

...

1

1

1

1

1

1

1

1

0

1

1

1

1

1

1

1

1

1

Offset

0

32

64

8192 (Half Full)

Default Offset

16384-64

16384-32

Table 2. Reset and Retransmit Single Device Configuration/Width Expansion Mode

Inputs

Internal Status

Mode

RS

RT

XI Read Pointer

Write Pointer

Reset

0

X

0 Location Zero

Location Zero

Retransmit

1

0

0

Read/Write

1

1

0

Note: 1. Pointer will increment if flag is high.

Location Zero

Increment(1)

Unchanged

Increment(1)

Table 3. Reset and First Load Truth Table

Depth Expansion/Compound Expansion Mode

Inputs

Mode

RS

FL

XI

Reset First Device

0

0

(1)

Reset All Other Devices

0

1

(1)

Read/Write

1

X

(1)

Note: 1. XI is connected to XO of previous device.

See Figure 5.

Read Pointer

Location Zero

Location Zero

X

Internal Status

Write Pointer

Location Zero

Location Zero

X

Outputs

EF

FF

HF

0

1

1

X

X

X

X

X

X

Outputs

EF

FF

0

1

0

1

X

X

7

4144K-AERO-04/07

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