PSB21383HV1.3XT Infineon Technologies, PSB21383HV1.3XT Datasheet - Page 183
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PSB21383HV1.3XT
Manufacturer Part Number
PSB21383HV1.3XT
Description
Manufacturer
Infineon Technologies
Datasheet
1.PSB21383HV1.3XT.pdf
(270 pages)
Specifications of PSB21383HV1.3XT
Number Of Line Interfaces
1
Control Interface
HDLC
Lead Free Status / Rohs Status
Compliant
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6.2
At the active low RST input pin an external reset can be applied forcing the device into
the reset state. This external reset signal is additionally fed to the RSTO/SDS2 output.
The length of the reset signal is specified in chapter 8.1.8.
After an external reset all internal registers are set to their reset values (see register
description in chapter 7).
6.3
Every internal functional block can be reset separately by setting the corresponding bit
in the SRES register (see chapter 7.2.15). The reset state is activated as long as the bit
is set to ’1’. The address range of the registers which will be reset at each SRES bit is
listed in figure 91.
6.4
During each reset the reference voltage (V
(DCL) and microcontroller clock (MCLK) keep running.
During any reset that has an influence on the IOM handler (see figure 91) the pin FSC
is set to ’1’, the pin SDS1 is set to ’0’ and pin BCL, DD and DU are in the high-impedance
state.
During any reset that has an influence on the codec (see figure 91) the pins LSP, LSN,
HOP and HON are in the high-impedance state.
During any reset that has an influence on the transceiver (see figure 91) the line
transceiver pins are in the high-impedance state.
During hardware reset the pins SDX and INT are in the high-impedance state.
A hardware reset is always output at pin RSTO/SDS2. This reset will be released by the
falling edge of BCL following the release of the pin RST.
Data Sheet
External Reset Input
Software Reset Register (SRES)
Pin Behavior during Reset
173
REF
) stays applied, the oscillator, data clock
PSB 21381/2
PSB 21383/4
2001-03-12
Reset
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