ICS9169C-27
Pin Descriptions
PIN NUMBER
PIN NAME
VDD
TYPE
DESCRIPTION
1
PWR
Power for device logic.
XTAL or external reference frequency input. This input
includes XTAL load capacitance and feedback bias for a
12-16MHz crystal, nominally 14.31818MHz. External crystal
load of 30pF to GND recommended for VDD power on faster
than 2.0ms.
2
X1
IN
XTAL output which includes XTAL load capacitance.
External crystal load of 10pF to GND recommended for VDD
power on faster than 2.0ms.
3
X2
OUT
4,11,20,26
GND
PWR
OUT
Ground for device logic.
Processor clock output which is a multiple of the input
reference frequency.
CPU(1)
5
FS0
IN
Frequency multiplier select pins. See shared pin description.*
CPU
(2:5) (8:12)
Processor clock outputs which are a multiple of the input
reference frequency.
6,7,9,10,15,16,17,18,19
8
OUT
PWR
Power for CPU(1:6) output buffers only. Can be reduced VDD
for 2.5V (2.375-2.62V) next generation processor clocks.
VDDC1
CPU(6)
FS1
Processor clock output which is a multiple of the input
reference frequency internal pull up devices.
OUT
IN
12
13
Frequency multiplier select pin. See shared pin description.*
Processor clock output which is a multiple of the input
reference frequency internal pull up devices.
CPU(7)
FS2
OUT
IN
Frequency multiplier select pin. See shared pin description.*
Power for CPU PLL, logic and CPU(7:12)output buffers. Must
be nominal 3.3V (3.0 to 3.7V)
14
VDDC2
PWR
BUS clock outputs which are a multiple of the input
reference clock.
21,22,24,25,27,28
BUS (6:1)
OUT
23
29
VDDB
VDDF
PWR
PWR
Power for BUS clock buffers BUS(1:6).
Power for fixed clock buffer (48 MHz, 24 Mhz).
Fixed 24MHz clock (assuming a 14.31818MHz REF
frequency).
30
31
24MHz
48MHz
REF
OUT
OUT
OUT
Fixed 48MHz clock (assuming a 14.31818MHz REF
frequency).
Fixed 14.31818MHz clock (assuming a 14.31818MHz REF
frequency).
32
Selection for synchronous or asynchronous bus clock
operation. See shared pin programming description late in this
data sheet for further explanation.*
BSEL
IN
* Internal pull-up will vary from 350K to 500K based on temperature.
2
ICSI [ INTEGRATED CIRCUIT SOLUTION INC ]
