MTC-20172-PC AMI Semiconductor, Inc., MTC-20172-PC Datasheet - Page 19

• Manufacturer Part Number: MTC-20172-PC
• Description: S Interface Circuit for ISDN (SIC)
• Manufacturer: AMI Semiconductor, Inc.

3.2 Pin Allocation and
Table 3.1 contains the pin number for
the each package style, the pin name,
I/O type, and a brief description. The
I/O column describes the
Input/Output buffer type used.
The 22 pin plastic DIC version
supports only the basic operation
mode.
The I/O types are :
P
IO
I
IW
O
OD = Output with open drain, no
ODP = Output with open drain,
AO = Analog output;
AI
AT
XI
S
Some pins have different I/O function
or type depending on the mode, listed
in Table 3.3 and paragraph 3.5.
Detailed configuration of all pins in
paragraphs 4.11 and 4.12, Tables
4.1 and 4.2. The electrical I/O
properties are described in 9.5 and
9.6.
The pin configuration is found in
Figure 3.3 and 3.4.
* see 6.5
= Power pin
= Input and push-pull output with
= Input only;
= Input only, weak pull-up
= Push-pull output, tristate
= Analog input;
= Analog test pin, input and
= crystal input; XO = crystal
= Strap (user), fixed to 1 or 0.
Brief Description
tristate;
resistor internally;
possible;
internal pull-up;
internal pull-up in some
modes;
output;
output.
Fig. 3.3 : 22 pin DIP, Signal Names
Fig. 3.4 : 28 pin Square PLCC Package, Signal Names
9
1
MTC-20172
Data Sheet & Reference Manual
Rev. 1.1 February 1997
28
(Basic and External) *
Basic Mode