FUJITSU MB91401 User Manual
Page 23
MB91401
23
JTAG
The JTAG function is installed in this LSI.
Note that the terminal INITXI should be input in "L" when using JTAG.
Notes when quartz vibrator is mounted
The crystal oscillation circuit built into this LSI operates by the following compositions.
•
Pin description
When OSCCL is input, the OSCEA and OSCEB oscillate at the natural frequency of the crystal oscillator and
propagated into the LSI.
•
Circuit constant on external substrate
Pin name
Function
OSCC
Oscillation control terminal of crystal oscillation cell (OSC)
OSCEA
Input terminal of crystal oscillation cell (OSC)
OSCEB
Output terminal of crystal oscillation cell (OSC)
Circuit constants
Description
C1, C2, C3
External load capacity
L
Inductance
Rr
Dumping resistance (addition if necessary)
OSCC
OSCEA
L
C1
C2
C3
OSC
MB91401
Rr
OSCEB
Installation
when over tone
oscillates
Quartz
vibrator
Prelminary
2004.11.12