W83977AF Information Storage Devices, Inc, W83977AF Datasheet - Page 166

• Manufacturer Part Number: W83977AF
• Description: W83877TF Plus Kbc, Cir, RTC
• Manufacturer: Information Storage Devices, Inc

12. TIMING WAVEFORMS
12.1 FDC
SA0-SA9
SA0-SA9
IOW or
DACK
D0-D7
DACK
D0-D7
DACK
DRQ
AEN
IOW
AEN
IRQ
IOR
IOR
IRQ
CS
TAW
TAR
TMW (IOW)
TMA
TMR (IOR)
TAM
TFD
DMA Operation
Processor Write Operation
Processor Read Operation
TMRW
TMCY
TRR
TWW
TAA
TDW
- 154 -
TDH
TR
TWI
TRA
TWA
TDF
TWD
STEP
DIR
W83977F/ W83977AF
INDEX
WD
Publication Release Date: March 1998
TDST
TC
RESET
TIDX
Drive Seek operation
Terminal Count
TSTP
Write Date
TWDD
Index
TIDX
Reset
TTC
TRST
TSC
TSTD
PRELIMINARY
Revision 0.58