PEB2245N-V12 Infineon Technologies, PEB2245N-V12 Datasheet - Page 33

• Manufacturer Part Number: PEB2245N-V12
• Description: IC SWITCHING/CONFER MULTI 44PLCC
• Manufacturer: Infineon Technologies
• Series: MUSAC™r

Specifications of PEB2245N-V12

• Function: Multipoint Switching and Conferencing
• Interface: PCM
• Voltage - Supply: 5V
• Current - Supply: 12mA
• Power (watts): 100mW
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 44-PLCC
• Includes: Clock Shift, Space Switch Mode, Time and Space Switch, Tristate Function
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Number Of Circuits: -
• Other names: PEB2245N-V12; PEB2245N-V12IN

3
3.1
After a hardware reset (RES) the MUSAC is set to its initial state. The MOD- and CFR-register bits
are all set to logical 1; the CSR, CST and CMR register bits are set to logical 0. The STA register B
bit is undefined, the Z bit contains logical 0.
3.2
After reset a few internal signals and clocks need to be initialized. This is done with the initialization
sequence. To give all signals and clocks a defined value only 4 SP pulses are necessary. The SP
pulses may be of any length allowed in normal application, the time interval between the two SP
pulses may be of any length down to 250 ns.
With all signals being defined, the CM needs to be reset. To do that a logical 0 is written into
MOD:RC. STA:B is set. The resulting CM reset is finished after max. 250 s and is indicated by the
status register B bit being logical 0. Changing the pulse shaping factor N during CM-reset may result
in a CM-reset time longer than 250 s.
To prepare the MUSAC for programming the CM and CCM, the RI bit in the mode register must be
reset. Note that one mode register access can serve to reset both RC- and RI bits as well as
configuring to chip (i.e. selecting operating mode etc.).
Figure 17
Initializing the PEB 2245 for a 8192-kHz Device Clock
Semiconductor Group
Operational Description
Reset State
Initialization Procedure
33
PEB 2245