AM79C978 Advanced Micro Devices, AM79C978 Datasheet - Page 229

• Manufacturer Part Number: AM79C978
• Description: Single-Chip 1/10 Mbps PCI Home Networking Controller
• Manufacturer: Advanced Micro Devices

SWITCHING WAVEFORMS: SYSTEM BUS INTERFACE
CLK
CLK
AD[31:00], C/BE[3:0],
PAR, FRAME, IRDY,
0.3 V DD_PCI
DEVSEL, IDSEL
0.5 V DD_PCI
0.4 V DD_PCI
TRDY, STOP,
0.8 V
1.5 V
GNT
2.0 V
CLK
Figure 58. CLK Waveform for 3.3 V Signaling
Figure 57. CLK Waveform for 5 V Signaling
Figure 59. Input Setup and Hold Timing
0.6 V DD_PCI
t HIGH
t HIGH
2.4 V
Am79C978
Tx
t SU(GNT)
t CYC
t CYC
t SU
0.2 V DD_PCI
t LOW
t LOW
0.4 V
t H(GNT)
t H
Tx
0.8 V
0.3 V DD_PCI
1.5 V
2.0 V
0.4 V DD_PCI
0.5 V DD_PCI
22206B-60
22206B-62
22206B-61
229