AV9155C 查看數據表（PDF） - Integrated Device Technology
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AV9155C Datasheet PDF : 14 Pages
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AV9155C
Pin Configuration
20-Pin DIP or SOIC
20-Pin DIP or SOIC
Pin Descriptions for AV9155C-01, -02
PIN
NUMBER
PIN NAME
1
1.843 MHz
2
X2
3
X1
4
VDD
5
GND
6
16 MHz/32 MHz
7
24 MHz
8
12 MHz
9
AGND
10
OE
11
FS2
12
PD#
13 14.318 MHz
14 14.318 MHz
15
GND
16
VDD
17
2XCPU
18
CPU
19
FS1
20
FS0
TYPE
Output
Output
Input
-
-
Output
Output
Output
-
Input
Input
Input
Output
Output
-
-
Output
Output
Input
Input
DESCRIPTION
1.84 MHz clock output.
Crystal connection.
Crystal connection.
Digital power supply (3.3V or 5.0V).
Digital Ground.
16 MHz (-01) or 32 MHz (-02) clock output.
24 MHz floppy disk/combination I/O clock output.
12 MHz keyboard clock output.
Analog ground (original version).
Output enable. Tristates all outputs when low. (Has internal pull-up.)
CPU clock frequency select #2. (Has internal pull-up.)
Power-down. Shuts off entire chip when low. (Has internal pull-up.)
14.318 MHz reference clock output.
14.318 MHz reference clock output.
Digital ground.
Digital power supply (3.3V or 5.0V).
2X CPU clock output.
1X CPU clock output.
CPU clock frequency select #1. (Has internal pull-up.)
CPU clock frequency select #0. (Has internal pull-up.)
2
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