lf4415 LOGIC Devices Inc., lf4415 Datasheet - Page 17

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

LOGIC Devices Incorporated
Address
Figure 9 - 8bit Configuration Register Map
3F
10
11
12
13
14
15
16
17
18
C
D
A
B
E
0
1
2
3
4
5
6
7
8
9
F
Configuration Registers
Register Name(s)
ROW_LENGTH [11:8]
ROW_LENGTH [7:0]
---
---
---
---
---
---
----
TRS_DETECT, TRS_TRIGGER
PTR_CNTRL
----
BASE_ADDR, NUM_CASC
EMPTY_THRESH_0 [21:16]
EMPTY_THRESH_0 [15:8]
EMPTY_THRESH_0 [7:0]
EMPTY_THRESH_1 [17:16]
EMPTY_THRESH_1 [15:8]
EMPTY_THRESH_1 [7:0]
FULL_THRESH_0 [21:16]
FULL_THRESH_0 [15:8]
FULL_THRESH_0 [7:0]
FULL_THRESH_1 [17:16]
FULL_THRESH_1 [15:8]
FULL_THRESH_1 [7:0]
REG_UPDATE
www.logicdevices.com
Description
Defines row length for 2-D row/column addressing
Defines row length for 2-D row/column addressing
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Defines the detection and use of embedded video TRS information
Defines falling-edge or level sensitivty of individual pointer control pins
Reserved
Defines depth expansion characteristics
Defines ‘almost-empty’ threshold for programmable empty flag PE0
Defines ‘almost-empty’ threshold for programmable empty flag PE0
Defines ‘almost-empty’ threshold for programmable empty flag PE0
Defines ‘almost-empty’ threshold for programmable empty flag PE1
Defines ‘almost-empty’ threshold for programmable empty flag PE1
Defines ‘almost-empty’ threshold for programmable empty flag PE1
Defines ‘almost-full’ threshold for programmable full flag PF0
Defines ‘almost-full’ threshold for programmable full flag PF0
Defines ‘almost-full’ threshold for programmable full flag PF0
Defines ‘almost-full’ threshold for programmable full flag PF1
Defines ‘almost-full’ threshold for programmable full flag PF1
Defines ‘almost-full’ threshold for programmable full flag PF1
Updates and activates modified configuration registers
17
PRELIMINARY
High Performance Memory Product
Video Memory / FIFO
MEMORY
FRAME
January 23, 2008 LDS-44xx-A
LF4460
LF4430
LF4415