AL460A-7&13-EVB-A0-User Manual
©2009~2010 Copyright by AverLogic Technologies, Corp. Version 1.0
8
2.3 User Control Interface
When connecting the AL460 evaluation board, the functions “Two Frame Mode” and “Polarity
Control” are configured on two 3-pin headers (JP3 & JP4 on adaptor).
Pin name
I/O
type
Description
PLRTY
I
Set the active polarity for the control signals by
jumpering pins 1,2, 3 on JP4:
Jumper 2, 3: PLRTY is active low (VD33).
Jumper 1, 2: PLRTY is active high (GND).
Control signals include WEN, REN, WRST, RRST,
IE, OE, (total of 6 signals).
Note: During memory operations, the pin must be
permanently connected to VD33 or GND. If PLRTY
level is changed during a memory operation,
memory data is not guaranteed.
TWO_FRAME_EN
I
Set Two Frame Mode by jumpering pins 1,2 3 on
JP3:
Jumper 1,2: “0” – Standard FIFO Mode
Jumper 3,2: “1” – Two Frame Mode
Note: These signals are internally pull-high; default is high if signals are NC.
Figure: 3-Pin Header Pin-Map
JP3
HEADER 3
1
2
3
JP4
HEADER 3
1
2
3
VDD33
VDD33
D
D
PLRTY
TWO_FRAME_EN
