PSF21150 INFINEON [Infineon Technologies AG], PSF21150 Datasheet - Page 73

• Manufacturer Part Number: PSF21150
• Description: IPAC-X ISDN PC ADAPTER CIRCUIT
• Manufacturer: INFINEON [Infineon Technologies AG]

3.4.3
The IPAC-X derives its system clocks from an external clock connected to XTAL1 (while
XTAL2 is not connected) or from a 7.68 MHz crystal connected across XTAL1 and
XTAL2.
At pin C768 a buffered 7.68 MHz output clock is provided to drive further devices, which
is suitable in multiline applications for example (see
synchronized to the S-interface.
In power down mode the C768 output is disabled (low signal).
Figure 38
Data Sheet
XTAL1
Oscillator Clock Output C768
MHz
7.68
IPAC-X
Buffered Oscillator Clock Output
XTAL2
C768
XTAL1
IPAC-X
XTAL2
73
n.c.
C768
n.c.
Description of Functional Blocks
Figure
XTAL1
IPAC-X
38). This clock is not
XTAL2
n.c.
21150_12
C768
PSB 21150
PSF 21150
n.c.
2000-07-21