AM79C970A Advanced Micro Devices, AM79C970A Datasheet - Page 99

• Manufacturer Part Number: AM79C970A
• Description: PCnet-PCI II Single-Chip Full-Duplex Ethernet Controller for PCI Local Bus Product
• Manufacturer: Advanced Micro Devices

NAND Tree Testing
The PCnet-PCI II 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.
INTA (pin 117)
RST (pin 120)
CLK (pin 121)
AD0 (pin 57)
VDD
Figure 42. NAND Tree Circuitry
P R E L I M I N A R Y
Am79C970A
PCnet-PCI II
Core
NAND tree testing is enabled by asserting RST. All PCI
bus signals will become inputs on the assertion of RST.
The result of the NAND tree test can be observed on the
NOUT pin.
VDD
B
A
MUX
S
O
(pin 62)
NOUT
19436A-45
AMD
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