W83977AF Information Storage Devices, Inc, W83977AF Datasheet - Page 178

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

12.7.2
12.7.3
13. APPLICATION CIRCUITS
13.1 Parallel Port Extension FDD
PWAKIN1, PWAKIN2
MOB2/BUSY
HEAD2/ERR
STEP2/SLIN
TRK02/PD1
RWC2/AFD
WE2/SLCT
DSB2/ACK
DCH2/PD4
RDD2/PD3
WP2/PD2
DIR2/INIT
IDX2/PD0
PSCTRL
WD2/PE
KCLK, MCLK
PHRI
PD7
PD6
PD5
STB
RIA , RIB , KLCK, MCLK, PWAKIN1, PWAKIN2 Trigger and PSCTRL Timing
PHRI Trigger and PSCTRL Timing
RIA, RIB
PSCTRL
V OH
V OL
V
HI-Z
OL
V OH
V OL
V OL
Parallel Port Extension FDD Mode Connection Diagram
HI-Z
13
25
12
24
11
23
10
22
21
20
19
18
17
16
15
14
9
8
7
6
5
4
3
2
1
PRINTER PORT
JP13
tRINW
tRINW
- 166 -
tRTO
W83977F/ W83977AF
tRIO
Publication Release Date: March 1998
tRPO
HEAD2
RWC2
DCH2
RDD2
WP2
TRK02
WE2
WD2
STEP2
DIR2
MOB2
DSB2
IDX2
PRELIMINARY
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
EXT FDC
JP 13A
33
31
29
27
25
23
21
19
17
15
13
11
Revision 0.58
9
7
5
3
1