Specifications
ispLSI 8840
Figure 4. ispLSI 8000 I/O Cell
TOE
VCCIO VCCIO
VCCIO
GLOBAL OE0
GLOBAL OE1
GLOBAL OE2
GLOBAL OE3
From Output
Control Bus
Multiplexed Output From
Big Fast Megablock or
Global Track
GLOBAL I/O CLOCK ENABLE
From Output
Control Bus
D
Q
Big Fast Megablock I/O Pad
or Global I/O Pad
Slew Open
Rate Drain
CLKEN
GLOBAL I/O CLOCK0
GLOBAL I/O CLOCK1
QUADRANT I/O CLOCK
R/L
To Specific
Big Fast Megablock
or Global Tracks
To Specific
Global Tristate Bus
From Output
Control Bus
P
R
From Output
Control Bus
Global I/O Cell
Only
GRST
From Output
Control Bus
: Function Selector (E
2
Cell Controlled)
7