MB87P2020 Datasheet, PDF (280/356 Pages) Fujitsu Component Limited. – Colour LCD/CRT/TV Controller

MB87J2120, MB87P2020-A Hardware Manual
2.5.5 Interrupt
For a functional description of GDC interrupt controller and supported settings see User Logic Bus (ULB)
controller description. This specification describes only the physical timing of interrupt request signal.
ULB_CLK
H/Z
ULB_INTRQ
L
00110011
t OHI
t ODI
t PWI
Figure 2-5: Interrupt output timing
00110011
t OHI
tODI
Table 2-9: INTRQ Timing Specification
Parameter
Symbol
Min [ps]
Max [ps]
Jas Lav
Jas
Lav
Interrupt (ULB_INTRQ) Pulse Width
t_PWI
2T / INTREQ^{a -}
a. Setup value in periods of ULB_CLK, for edge sensitive mode only. In Level sensitive mode minimum 2
cycles.
Table 2-10: INTRQ Timing Specification, Output Characteristics
Parameter
max. Interrupt (ULB_INTRQ) output delay
time
min. Interrupt (ULB_INTRQ) output hold
time
Symbol
t_ODI
t_OHI
@20pF [ps]
Jas Lav
12360 12870
4020 4420
@50pF [ps]
Jas
Lav
14400 14900
4360
4640
Page 280