6 external wait cycle – FUJITSU MB91460 SERIES FR60 User Manual
Page 583

567
Chapter 31 External Bus
5.Operation of the Ordinary bus interface
Figure 5-5 Timing Chart for the Auto-Wait Cycle
Setting of the W15-12 bits (first wait cycles) of the AWR register enables 0-15 auto-wait cycles to be set.
In
"Timing Chart for the Auto-Wait Cycle", two auto-wait cycles are inserted, making a total of four
cycles for access. If auto-wait is set, the minimum number of bus cycles is 2 cycles + (first wait cycles). For a
write operation, the minimum number of bus cycles may be still longer depending on the internal state.
5.6 External Wait Cycle
This section shows the operation timing for the external wait cycle.
■
External Wait Cycle Timing
"Timing Chart for the External Wait Cycle" shows the operation timing for (TYP3-0=0001
B
,
AWR=2008
H
).
Basic cycle
Wait cycle *
MCLK
A[31:0]
AS
CSn
RD
D[31:0]
WRn
D[31:0]
- XG Series P3NK-4452-01ENZD (614 pages)
- FPCAC14C (1 page)
- MCJ3230SS (161 pages)
- MBA3073NC (138 pages)
- T5140 (102 pages)
- T5140 (76 pages)
- MAM3367MC/MP (152 pages)
- MPC3045AH (185 pages)
- MB2142-02 (23 pages)
- MB15F86UL (6 pages)
- MHS2030AT (40 pages)
- MHW2100BS (296 pages)
- MHK2060AT (227 pages)
- Disk Drives MHK2060AT (227 pages)
- MCM3064SS (170 pages)
- Mainboard D1561 (45 pages)
- MHC2040AT (219 pages)
- D1961 (45 pages)
- DISK DRIVES MHM2100AT (231 pages)
- MHR2010AT (250 pages)
- MHZ2120BJ (320 pages)
- MCE3064AP (175 pages)
- LQFP-64P (16 pages)
- Solaris PCI GigabitEthernet 3.0 (115 pages)
- MAY2036RC (94 pages)
- MAB3091 (142 pages)
- MPE3XXXAT (191 pages)
- MHV2040AH (40 pages)
- MHW2040AC (278 pages)
- ETERNUSmgr P2X0-0202-01EN (64 pages)
- VSS Hardware Provider 2.1 (134 pages)
- MAG3182FC (61 pages)
- MAU3147NC/NP (130 pages)
- MAX3147RC (94 pages)
- MHV2160BT (296 pages)
- MHV2040AT (280 pages)
- MAW3300NC/NP (130 pages)
- DeskPower E623 (50 pages)
- MAG3182LC (133 pages)
- OPTICAL DISK DRIVES MDG3064UB (42 pages)
- MHF2021AT (225 pages)
- MHR2040AT (40 pages)
- Single Drive FTM7926FB (1 page)
- PG-FCS103 (98 pages)
- MAS3735FC (114 pages)