PEF 20550 H V2.1 Infineon Technologies, PEF 20550 H V2.1 Datasheet - Page 217

• Manufacturer Part Number: PEF 20550 H V2.1
• Description: IC INTERFACE CTRLR PCM MQFP80
• Manufacturer: Infineon Technologies
• Series: ELIC®r

Specifications of PEF 20550 H V2.1

• Function: Line Card Controller
• Interface: ISDN, PCM
• Number Of Circuits: 1
• Voltage - Supply: 5V
• Current - Supply: 15mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 80-SQFP
• Includes: Change Detection, Power-Up Reset Generation
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Other names: PEF20550HV2.1XT; PEF20550HV21XP; SP000007794; SP000007795

Figure 68 shows the relationship between the DCL input and the generated RCL for the
different prescaler divisors in case CMD1:CSS = 1:
Figure 68
Clock Signal Timing for the Different Prescaler Divisors if CMD1:CSS = 1
CFI Clock Output Rate CMD2:COC
This feature applies only if the configurable interface is clocked and synchronized via the
PCM interface clock and framing signals (PDC, PFS), i.e. if CMD1:CSS = 0.
In this case the ELIC delivers an output clock signal at pin DCL with a frequency identical
to or double the selected CFI data rate:
For CMD2:COC = 0, the frequency of DCL is identical to the CFI data rate
For CMD2:COC = 1, the frequency of DCL is twice the CFI data rate
Semiconductor Group
FSC
FSC
DCL
RCL
RCL
RCL
RCL
RCL
RCL
(all CFI modes)
(CFI modes 0 and 3 only!)
217
Conditions:
CMD1 : CSM = 1
CMD1
CFI Modes 0, 1 and 3
CFI Mode 2
CFI Modes 0, 1 and 3
CFI Mode 2
CFI Modes 0, 1 and 3
CFI Mode 2
:
CSM
Application Hints
=
0
PEB 20550
PEF 20550
ITT08047
01.96