lf4415 LOGIC Devices Inc., lf4415 Datasheet - Page 5

• Manufacturer Part Number: lf4415
• Description: Video Memory / Fifo
• Manufacturer: LOGIC Devices Inc.

LOGIC Devices Incorporated
I/O Word
Width
Figure 5 - Single Channel FIFO I/O Mapping
10
12
16
20
24
8
I/O1
I/O 23 I/O 22 I/O 21 I/O 20 I/O 19 I/O 18 I/O 17 I/O 16 I/O 15 I/O 14 I/O 13 I/O 12
I/O
11
15
9
I/O
I/O
10
18
14
LF4415 (15Mbit) Memory Organization
# FIFO
Channels
RDRW
I/O
I/O
*Only Single Channel Modes are capable of using the External Address port (ADDR)
Figure 3 - LF4415 (15Mbit) Memory Organization Control
www.logicdevices.com
Figure 4 - External Address Port Configuration*
9
1
1
1
1
1
1
2
2
2
17
13
0
1
I/O
I/O
8
16
12
I/O
I/O
Override
(2x) 8 x
(2x) 10 x
(2x) 12 x
Address Description
7
D1/Q1
15
Read
11
Write
I/O
I/O
Organization
10 x 1,552,320
12 x 1,293,600
16 x
20 x
24 x
6
Memory
8 x 1,940,400
14
10
[11:0]
I/O
I/O
5
External address port (ADDR) overrides WRITE address when WSET0 = LOW
External address port (ADDR) overrides READ address when RSET = LOW
13
9
970,200
776,160
646,800
970,200
776,160
646,800
I/O
I/O
4
12
8
I/O
----
3
11
I/O
MODE
000x
0010
0011
100x
1010
1011
110x
1110
1111
----
2
10
5
1
----
----
0
----
----
10bit wide 15Mbit single-channel FIFO
12bit wide 15Mbit single-channel FIFO
16bit wide 15Mbit single-channel FIFO
20bit wide 15Mbit single-channel FIFO
24bit wide 15Mbit single-channel FIFO
Two independent 8bit wide 7Mbit FIFOs
Two independent 10bit wide 7Mbit FIFOs
Two independent 12bit wide 7Mbit FIFOs
Description
8bit wide 15Mbit single-channel FIFO
11
I/O 7 I/O 6 I/O 5 I/O 4 I/O 3 I/O 2 I/O 1 I/O 0
I/O 9 I/O 8 I/O 7 I/O 6 I/O 5 I/O 4 I/O 3 I/O 2 I/O 1 I/O 0
I/O 7 I/O 6 I/O 5 I/O 4 I/O 3 I/O 2 I/O 1 I/O 0
I/O
I/O
I/O 9 I/O 8 I/O 7 I/O 6 I/O 5 I/O 4 I/O 3 I/O 2 I/O 1 I/O 0 NC
11
11
I/O
I/O
10
PRELIMINARY
10
10
I/O
I/O
9
9
9
I/O
I/O
High Performance Memory Product
8
8
8
I/O
I/O
7
7
7
D0/Q0
I/O
I/O
6
6
6
Video Memory / FIFO
I/O
I/O
[11:0]
5
5
5
I/O
I/O
4
4
4
January 23, 2008 LDS-44xx-A
FRAME
MEMORY
I/O
I/O
----
----
3
3
3
I/O
I/O
----
----
2
LF4460
LF4430
LF4415
2
2
I/O
I/O
1
----
----
----
1
1
I/O
I/O
NC
----
----
----
0
0
0