Freescale semiconductor, inc – Motorola VL-RISC MCF5202 User Manual
Page 11
MOTOROLA
GATEWAY BOARD
11
!BG68K
pin 16 istype 'output';
"nBG68K
!BGCF
pin 20 istype 'output';
"nBGCF
LDAT
pin 22 istype 'output';
"(!nLE16_8) - 0=transparent latches, L-2-H=latches data
!OEBA8
pin 23 istype 'output';
"nOEBA8 =0=HIZ, 1=output from B (TDAT) to A (AD) enabled
!OEAB8
pin 24 istype 'output';
"nOEAB8 =0=HIZ, 1=output from A (AD) to B (TDAT) enabled
!OEBA16
pin 25 istype 'output';
"nOEBA16=0=HIZ, 1=output from B (TDAT) to A (AD) enabled
!OEAB16
pin 26 istype 'output';
"nOEAB16=0=HIZ, 1=output from A (AD) to B (TDAT) enabled
!UDS
pin 31 istype 'output';
"nUDS
!LDS
pin 32 istype 'output';
"nLDS
!ADLT
pin 33 istype 'output';
"Addr Latch - 0=transparent latches, L-2-H=latches data
!AS
pin 34 istype 'output';
"nAS
!DA1
pin 35 istype 'output';
"nDA1
!DA0
pin 36 istype 'output';
"nDA0
!AEUP
pin 37 istype 'output';
"Addr Enable for A[23:8] - AEUP=0=HIZ, AEUP=1=output
"-----------------------------------------------------------------------------------------
"Internal Nodes
PQ0,PQ1,PQ2
node istype 'reg, buffer';
A0
node istype 'reg,buffer';
ATMA
node istype 'reg,buffer';
NQ1
node istype 'reg';
NQ2
node istype 'reg';
NCLK
node;
BQ0,BQ1
node istype 'reg,buffer';
"Constants
c,k,x,z = .C.,.K.,.X.,.Z.;
"this is used for test vectors
"State Value Constants
psreg
= [PQ2,PQ1,PQ0];
"Positive Clk State Register
PS0
= [0,0,0];
"!PQ2&!PQ1&!PQ0
PS1
= [0,0,1];
"!PQ2&!PQ1&PQ0
PS2
= [0,1,1];
Ò!PQ2&PQ1&PQ0
PS3
= [0,1,0];
"!PQ2&PQ1&!PQ0
PS4
= [1,1,0];
"PQ2&PQ1&!PQ0
PS5
= [1,0,0];
"PQ2&!PQ1&!PQ0
PSTATE0
= !PQ2&!PQ1&!PQ0;
PSTATE1
= !PQ2&!PQ1&PQ0;
PSTATE2
= !PQ2&PQ1&PQ0;
PSTATE3
= !PQ2&PQ1&!PQ0;
PSTATE4
= PQ2&PQ1&!PQ0;
PSTATE5
= PQ2&!PQ1&!PQ0;
bsreg
= [BQ1,BQ0];
"BusArb State Register
BS0
= [0,0];
BS1
= [0,1];
BS2
= [1,1];
BS3
= [1,0];
Equations
"Initializations
psreg.clk = PCLK;
psreg.ar = RSTI;
A0.clk = TS;
"AD0 is latched when TS is asserted
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
.
..