psb4595 ETC-unknow, psb4595 Datasheet - Page 34

• Manufacturer Part Number: psb4595
• Description: Analog Line Interface Solution Alis
• Manufacturer: ETC-unknow

PSB 4595 / PSB 4596
Analog Line Interface Solution
Configuration Overview
5.3.2
Crystal clock
Because ALIS includes an on-chip oscillator circuit, an external crystal may be used.
This crystal is connected across the MCLK1 and MCLK2 pins with two capacitors (see
Figure 22
”External Crystal Connections” ) . The CLK_EXT bit in CR0 must be
programmed to a logic '0' (= default value after reset). The capacitor values depend on
the crystal type and are specified by the crystal manufacturer. A microprocessor-grade
crystal with a parallel-resonant fundamental frequency is recommended.
To ensure that the ratio between the master clock and the FSC signal is correct, ALIS
can be programmed to internal FSC generation (set Fsc_en bit in CR4 to a logic '1'). See
Figure 18 “Host Interface in Demux Mode, FSC as Output” on page 30 and Figure 20
“Host Interface in MUX mode, FSC as Output” on page 32.
XTAL 16.384 MHz
C
C
xtl
xtl
MCLK2
MCLK1
ALIS-D
Figure 22 External Crystal Connections
Semiconductor Group
34
Data Sheet 06.98