ThunderLAN

™ TNETE100

PCI ETHERNET

™ CONTROLLER

SINGLE-CHIP 10 BASE-T WITH MII FOR 100 BASE-T/100VG-AnyLAN

™

SPWS017B – APRIL 1995 – REVISED AUGUST 1996

16

POST OFFICE BOX 1443

PARAMETER MEASUREMENT INFORMATION

Outputs are driven to a minimum high-logic level of 2.4 V and to a maximum low-logic level of 0.6 V. These levels

are compatible with TTL devices.

Output transition times are specified as follows: For a high-to-low transition on either an input or output signal,

the level at which the signal is said to be no longer high is 2 V and the level at which the signal is said to be low

is 0.8 V. For a low-to-high transition, the level at which the signal is said to be no longer low is 0.8 V and the level

at which the signal is said to be high is 2 V, as shown below.

The rise and fall times are not specified but are assumed to be those of standard TTL devices, which are typically

1.5 ns.

0.8 V (low)

2 V (high)

test measurement

The test-load circuit shown in Figure 3 represents the programmable load of the tester pin electronics that are

used to verify timing parameters of the TNETE100 output signals.