w83977atf Winbond Electronics Corp America, w83977atf Datasheet - Page 50

• Manufacturer Part Number: w83977atf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

12.0 SPECIFICATIONS..................................................................................................161
12.1 ABSOLUTE MAXIMUM RATINGS ...................................................................................................161
12.2 DC CHARACTERISTICS....................................................................................................................161
12.3 AC CHARACTERISTICS....................................................................................................................165
13.0 TIMING WAVEFORMS ........................................................................................173
13.1 FDC .....................................................................................................................................................173
13.2 UART/PARALLEL ..............................................................................................................................174
13.3. PARALLEL PORT..............................................................................................................................176
13.4 KBC.....................................................................................................................................................182
12.3.1 FDC: Data rate = 1 MB, 500 KB, 300 KB, 250 KB/sec. ................................................................165
12.3.2 UART/Parallel Port .......................................................................................................................167
12.3.3 Parallel Port Mode Parameters .....................................................................................................167
12.3.4 EPP Data or Address Read Cycle Timing Parameters ...................................................................168
12.3.5 EPP Data or Address Write Cycle Timing Parameters...................................................................169
12.3.6 Parallel Port FIFO Timing Parameters..........................................................................................170
12.3.7 ECP Parallel Port Forward Timing Parameters.............................................................................170
12.3.8 ECP Parallel Port Reverse Timing Parameters..............................................................................170
12.3.9 KBC Timing Parameters................................................................................................................171
12.3.10 GPIO Timing Parameters ............................................................................................................172
13.2.1 Modem Control Timing..................................................................................................................175
13.3.1 Parallel Port Timing......................................................................................................................176
13.3.2 EPP Data or Address Read Cycle (EPP Version 1.9) .....................................................................177
13.3.3 EPP Data or Address Write Cycle (EPP Version 1.9).....................................................................178
13.3.4 EPP Data or Address Read Cycle (EPP Version 1.7) .....................................................................179
13.3.5 EPP Data or Address Write Cycle (EPP Version 1.7).....................................................................180
13.3.6 Parallel Port FIFO Timing ............................................................................................................180
13.3.7 ECP Parallel Port Forward Timing ...............................................................................................181
13.3.8 ECP Parallel Port Reverse Timing ................................................................................................181
13.4.1 Write Cycle Timing........................................................................................................................182
13.4.2 Read Cycle Timing ........................................................................................................................182
13.4.3 Send Data to K/B...........................................................................................................................182
13.4.4 Receive Data from K/B ..................................................................................................................183
13.4.5 Input Clock....................................................................................................................................183
13.4.6 Send Data to Mouse.......................................................................................................................183
13.4.7 Receive Data from Mouse..............................................................................................................183
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Publication Release Date:April 1998
W83977ATF
PRELIMINARY
Revision 0.52