Specifications ispLSI 5256V

2

Functional Block Diagram

Figure 1. ispLSI 5256V Functional Block Diagram (272 BGA Option)

Global Routing Pool

(GRP)

Boundary

Scan

Interface

GSET/GRST

1.

CLK2, CLK3 and TOE signals are multiplexed with I/O signals. Which I/O is multiplexed is

determined by the package type used – see table below.

TDI

TDO

VCCIO

Input Bus

Generic

Logic Block

Input Bus

Input Bus

Input Bus

Generic

Logic Block

Generic

Logic Block

Generic

Logic Block

Package Type

Multplexed Signals

208 PQFP

I/O 89 / CLK2

I/O 98 / CLK3

I/O 0 / TOE

208 BGA

I/O 89 / CLK2

I/O 98 / CLK3

I/O 0 / TOE

272 BGA

I/O 119 / CLK2

I/O 131 / CLK3

I/O 0 / TOE

I/O 143

I/O 142

I/O 141

I/O 140

I/O 123

I/O 122

I/O 121

I/O 120

I/O 119

I/O 118

I/O 117

I/O 116

I/O 99

I/O 98

I/O 97

I/O 96

1I/O 0 / TOE

I/O 1

I/O 2

I/O 3

I/O 20

I/O 21

I/O 22

I/O 23

I/O 24

I/O 25

I/O 26

I/O 27

I/O 44

I/O 45

I/O 46

I/O 47