com90c66 Standard Microsystems Corp., com90c66 Datasheet - Page 65

• Manufacturer Part Number: com90c66
• Description: Arcnet Controller/transceiver With At Interface And On-chip Ram Corporation
• Manufacturer: Standard Microsystems Corp.

PAGE
2,6,13
25
Pin
Description of Pin Functions - Pin 60;
Figure 2 - System Block Diagram -
Pin 60
Table 8 - Configuration Register - Bit
7
DATA SHEET ERRATA FOR REVISION D COM90C66
SECTION/FIGURE/ENTRY
Configuration
-
Pin
60;
65
In Revisin D, Pin 60 is not a No Connect, but
rather, "n16-Bit Detect".
"n16DETECT", and the Description should read
"Input.
between hardware reset and writing to the
Configuration Register, the device defaults to 16-
bit Mode. If a logic "0" is not sensed, the device
defaults to 8-bit Mode.
obtained as a result of this input may be
overridden
connected to a weak internal pull-up resistor. For
a board designed to support both 8- and 16-bit
buses, it is recommended that this signal be
connected to a signal which is low only in the
presence of a 16-bit bus, such as connector D18
of the AT bus (AT ground)."
The last sentence in the Description should read
"This bit defaults to a logic "1" (16-bit mode) if
Pin 60 senses a low level any time between
hardware
Configuration Register.
sensed, bit 7 defaults to a logic "0" (8-bit mode).
the bus-size default determined by Pin 60."
Writing to the Configuration Register overrides
When this signal is low any time
reset
via
CORRECTION
software.
and
the
If a logic "0" is not
The default setting
The symbol is
writing
This
signal
of
the
is