PEF 24470 H V1.3 Infineon Technologies, PEF 24470 H V1.3 Datasheet - Page 38

• Manufacturer Part Number: PEF 24470 H V1.3
• Description: IC MTSI-XL SWITCHING MQFP100
• Manufacturer: Infineon Technologies
• Series: SWITIr

Specifications of PEF 24470 H V1.3

• Function: Switching IC
• Interface: PCM, PLL
• Number Of Circuits: 1
• Voltage - Supply: 3.13 V ~ 3.47 V
• Current - Supply: 200mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 100-SQFP
• Includes: Clock Shift, Data Rate Adaption, Multipoint Switching
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Other names: PEF24470HV1.3X; SP000007617

PRELIMINARY
4
4.1
The local bus is a PCM interface consisting of input and output data lines (IN, OUT), a
PCM data clock PDC and a frame synchronization signal PFS.
Figure 10
The PFS Frame Sync is a 8 kHz signal and delimiting the frame. This input signal is
used by the SWITI to determine the start of a frame. A frame is divided into 8-bit wide
time-slots. The amount of time-slots within a frame depends on the selected data rate of
PDC which can be 2.048 Mbit/s, 4.096 Mbit/s, 8.192 Mbit/s, 16.384 Mbit/s. The PFS
input has a Schmitt-Trigger characteristic.
The PDC Data Clock input supplies the SWITI with a data clock. It can be operated with
2.048 MHz, 4.096 MHz, 8.192 MHz, or 16.384 MHz data rate clock depending on the
selected highest data mode. The PDC clock signal must be equal or higher as the
highest data rate. The PDC input has a Schmitt-Trigger characteristic.
A clock slave must receive PFS and PDC whereas a clock master drives these signals.
To enable or disable the signals for the clock master the command ’PCM Clock Input/
Output Selection’ must be issued.
The time-slots are transmitted and received via 16 input and 16 output lines (IN[15:0],
OUT[15:0]). The input lines have a Schmitt-Trigger characteristic. The output lines have
tristate outputs with push-pull characteristic. For every time-slot not participating to a
connection the output is high impedance.
With the special command "Local Bus (PCM) Standby" in the
to set all PCM lines in a high impedance state during the normal operation mode. All
PCM lines are in high impedance state after the reset process and must be enabled with
the "Local Bus (PCM) Standby" command. All lines which are not participating on a
switching operation are in high impedance state and the time-slot information on the
input lines are discarded automatically.
Preliminary Data Sheet
Description of Interfaces
Local Bus Interface (PCM)
PCM Interface Configurations
PDC
OUT
PFS
IN
Clock Slave
PCM I/O
29
PDC
OUT
PFS
IN
PEF 20450 / 20470 / 24470
Clock Master
CMD2
Description of Interfaces
PCM I/O
switi_037.emf
register it is possible
2001-11-20