AV9155
Pin Configuration
20-Pin DIP or SOIC
20-Pin DIP or SOIC
Pin Descriptions for AV 9155-01, 9155-02
PIN
N UM BER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
X2
X1
VDD
GN D
16 M Hz/32 M Hz
24 M Hz
12 M Hz
AGN D
OE
FS2
PD#
14.318 M Hz
14.318 M Hz
GN D
VDD
2XC PU
C PU
FS1
FS0
PIN N AM E
1.843 M Hz
TYPE
O utput
O utput
Input
-
-
O utput
O utput
O utput
-
Input
Input
Input
O utput
O utput
-
-
O utput
O utput
Input
Input
1.84 M Hz clock output.
C rystal connection.
C rystal connection.
Digital power supply (3.3V or 5.0V).
Digital Ground.
16 M Hz (-01) or 32 M Hz (-02) clock output.
24 M Hz floppy disk/combination I/O clock output.
12 M Hz keyboard clock output.
Analog ground (original version).
O utput enable. Tristates all outputs when low. (Has internal pull-up.)
C PU clock frequency select #2. (Has internal pull-up.)
Power-down. Shuts off entire chip when low. (Has internal pull-up.)
14.318 M Hz reference clock output.
14.318 M Hz reference clock output.
Digital ground.
Digital power supply (3.3V or 5.0V).
2X C PU clock output.
1X C PU clock output.
C PU clock frequency select #1. (Has internal pull-up.)
C PU clock frequency select #0. (Has internal pull-up.)
DESC RIPTIO N
2
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