PEF 20550 H V2.1 Infineon Technologies, PEF 20550 H V2.1 Datasheet - Page 254

• 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 89 illustrates this behavior.
Figure 89
Write Access to the Control Memory Data and Code Fields
For reading back the CM code field, the command MACR:MOC = 111X is also used, the
value of CMC3 … 0 being don’t care. The code field value can then be read from the
lower 4 bits of MADR.
Semiconductor Group
MACR:
Up-
stream
Down-
stream
0
CFI
Frame
1
0
127
0
127
1
1
Code Field
CMC
3
...
0
Control Memory
MADR:
MD7
.
Data Field
.
254
.
.
.
.
MD0
MAAR:
U/D = 1
U/D = 0
U/D
MA6
Application Hints
.
.
.
PEB 20550
PEF 20550
.
ITD08068
. MA0
01.96