Specifications ispLSI 2032E
9
ispLSI 2032E Timing Model
Derivations of
tsu, th and tco from the Product Term Clock
=
tsu
Logic + Reg su - Clock (min)
(
tio + tgrp + t20ptxor) + (tgsu) - (tio + tgrp + tptck(min))
(#20 + #22 + #26) + (#29) - (#20 + #22 + #35)
(0.6 + 0.7 + 2.2) + (0.8) - (0.6 + 0.7 + 0.3)
=
th
Clock (max) + Reg h - Logic
(
tio + tgrp + tptck(max)) + (tgh) - (tio + tgrp + t20ptxor)
(#20 + #22 + #35) + (#30) - (#20 + #22 + #26)
(0.6 + 0.7 + 2.8) + (1.7) - (0.6 + 0.7 + 2.2)
=
tco
Clock (max) + Reg co + Output
(
tio + tgrp + tptck(max)) + (tgco) + (torp + tob)
(#20 + #22 + #35) + (#31) + (#36 + #38)
(0.6 + 0.7 + 2.8) + (0.7) + (1.0 + 1.0)
Table 2-0042/2032E
Note: Calculations are based upon timing specifications for the ispLSI 2032E-225L
2.7
2.3
6.8
GLB Reg
Delay
I/O Pin
(Output)
ORP
Delay
Feedback
Reg 4 PT Bypass
20 PT
XOR Delays
Control
PTs
I/O Pin
(Input)
Y0,1,2
GRP
GLB Reg Bypass
ORP Bypass
DQ
RST
RE
OE
CK
I/O Delay
I/O Cell
ORP
GLB
GRP
I/O Cell
#24
#25, 26, 27
#33, 34,
35
#43, 44
#36
Reset
Ded. In
#21
#20
#28
#29, 30,
31, 32
#38,
#39
GOE 0
#42
#40, 41
0491/2032E
#22
Comb 4 PT Bypass #23
#37
#45