datasheetbank_Logo
Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site

LC4384C-35FT256C View Datasheet(PDF) -

Part Name
Description
View to exact match
LC4384C-35FT256C
 
LC4384C-35FT256C Datasheet PDF : 0 Pages
Lattice Semiconductor
ispMACH 4000V/B/C/Z Family Data Sheet
Output Routing Pool (ORP)
The Output Routing Pool allows macrocell outputs to be connected to any of several I/O cells within an I/O block.
This provides greater exibility in determining the pinout and allows design changes to occur without affecting the
pinout. The output routing pool also provides a parallel capability for routing macrocell-level OE product terms. This
allows the OE product term to follow the macrocell output as it is switched between I/O cells. Additionally, the out-
put routing pool allows the macrocell output or true and complement forms of the 5-PT bypass signal to bypass the
output routing multipliers and feed the I/O cell directly. The enhanced ORP of the ispMACH 4000 family consists of
the following elements:
• Output Routing Multiplexers
• OE Routing Multiplexers
• Output Routing Pool Bypass Multiplexers
Figure 7 shows the structure of the ORP from the I/O cell perspective. This is referred to as an ORP slice. Each
ORP has as many ORP slices as there are I/O cells in the corresponding I/O block.
Figure 7. ORP Slice
OE Routing Multiplexer
From PTOE
To I/O
Cell
OE
5-PT Fast Path
From Macrocell
ORP
Bypass
Multiplexer
Output
To I/O
Cell
Output Routing Multiplexer
Output Routing Multiplexers
The details of connections between the macrocells and the I/O cells vary across devices and within a device
dependent on the maximum number of I/Os available. Tables 5-9 provide the connection details.
Table 6. ORP Combinations for I/O Blocks with 8 I/Os
I/O Cell
I/O 0
I/O 1
I/O 2
I/O 3
I/O 4
I/O 5
I/O 6
I/O 7
Available Macrocells
M0, M1, M2, M3, M4, M5, M6, M7
M2, M3, M4, M5, M6, M7, M8, M9
M4, M5, M6, M7, M8, M9, M10, M11
M6, M7, M8, M9, M10, M11, M12, M13
M8, M9, M10, M11, M12, M13, M14, M15
M10, M11, M12, M13, M14, M15, M0, M1
M12, M13, M14, M15, M0, M1, M2, M3
M14, M15, M0, M1, M2, M3, M4, M5
9
 

Share Link: 

datasheetbank.com [ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]