am79c970 Advanced Micro Devices, am79c970 Datasheet - Page 77

• Manufacturer Part Number: am79c970
• Description: Pcnettm-pci Single-chip Ethernet Controller For Pci Local Bus
• Manufacturer: Advanced Micro Devices

NAND Tree Testing
The PCnet-PCI controller provides a NAND tree test
mode to allow checking connectivity to the device on a
printed circuit board. The NAND tree is built on all PCI
bus signals.
1-944
AMD
INTA
(pin 117)
RST
(pin 120)
CLK
(pin 121)
AD0
(pin 57)
VDD
Figure 30. NAND Tree
P R E L I M I N A R Y
Am79C970
PCnet-PCI
Core
NAND tree testing is enabled by asserting RST. All PCI
bus signals will become inputs on the asserting of RST.
The result of the NAND tree test can be observed on the
NOUT pin.
VDD
B
A
MUX
S
O
18220C-32
NOUT
(pin 62)