PEB 2091
PEF 2091
Functional Description
reached. This is independent of mode setting. However there is a difference in reset
duration and indication between the stand-alone mode and the microprocessor mode.
In stand-alone mode this internal reset (POR) will be fully equivalent to the hardware
reset generated by activating the pin RES. The duration of the reset pulse will be some
value between 10 and 30 µs.
The processor mode (PMODE="1") has two additional properties:
- The POR will be given on the pin RST
- The POR will also reset the register STCR. See "STCR-Register", page 212.
The duration of POR in this mode will be some value between 60 and 70 ms.
3.15
Reset Behavior
Several resets are provided in the IEC-Q (see chapters 3.12, 3.13 and 3.14 above). Their
effects are summarized in Table 13.
Definition
The transceiver core is said to be reset if the Receiver coefficients, the awake unit, the
Monitor Channel procedure and the state machine are reset.
Table 13
Reset
Reset
Condition
Power-on
Effect
Pin RST active1)
Power-On
Resets the transceiver core2).
Resets all registers in the
microprocessor mode
yes
UVD
Power
Resets the transceiver core2).
yes
no
supply drop Resets all registers in the
microprocessor mode
Pin RES = 0 Resets the transceiver core2).
Resets all registers except for
register STCR in the microprocessor
mode
Hardware
Reset
Watchdog
Watchdog
expired
No internal effect
yes
no
Software
Reset
C/I = 0001
Resets the transceiver core
1) Applies only in the microprocessor mode
2) In all IOM®-2 slave modes this reset will be carried out only after the IOM®-2 clocks has been applied to the
IEC-Q
Semiconductor Group
94
Data Sheet 01.99
INFINEON [ Infineon ]
