CHT-CG-050 Datasheet, PDF (2/9 Pages) List of Unclassifed Manufacturers – Versatile High Temperature Clock Generator

CHT-CG-050 - Preliminary datasheet - Version 0.4 (08/2005)
2
Pin Description (Cnt'd)
Vdd
Circuit core power supply
terminal.
Vdd_Buff Output buffer power supply
terminal.
Vss
Circuit core ground terminal.
Vss_Buff Output buffer ground termi-
nal.
X1
Input of crystal driver
X2
Output of crystal driver
XtalDR_0
XtalDR_1
Inputs to set the crystal drive
strength.
TRUTH TABLE
XtalDR_1 XtalDR_0
0
0
0
1
1
0
1
1
Strength
Lowest
Low
High
Highest
/XtalEn
When driven LOW, the crys-
tal oscillator is enabled.
When driven HIGH, the
crystal oscillator is stopped.
Internal architecture
Xtal driver
R1=2M
R2=200
Clock
select
Programmable
divider
1/2/4/8
Programmable
output buffer
8/16/24/32 mA
FOUT
Figure 1. CHT-CG-050: simplified blocks diagram.
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