PEF 20550 H V2.1 Infineon Technologies, PEF 20550 H V2.1 Datasheet - Page 263

• 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

Downstream: CFI port 4, timeslot 2, bits 7 … 0 from PCM port 1, timeslot 3, bits 7 … 0
The following sequence sets transmit timeslot 12 of PCM port 0 to low impedance:
Examples
In PCM mode 1 and CFI mode 3 the following connections shall be programmed:
Upstream: CFI port 5, timeslot 7, bits 7 … 0 to PCM port 0, timeslot 12, bits 7 … 0
Semiconductor Group
W:MADR = 1001 1000
W:MAAR
W:MACR = 0111 0001
W:MADR = 0000 0111
W:MAAR
W:MACR = 0111 0001
W:MADR =
W:MAAR
W:MACR =
= 1011 1011
= 0001 1000
= 1001 1011
0000 1111
0110 0000
B
B
B
B
B
B
B
B
B
; PCM timeslot encoding according to figure 84
; CFI timeslot encoding according to figure 84
; CM code for switching a 64 kBit/s channel
; PCM timeslot encoding according to figure 84
; CFI timeslot encoding according to figure 84
; CM code for switching a 64 kBit/s channel (0001)
; all bits to low Z
; PCM timeslot encoding according to figure 84
; MOC code ‘1100’ to access the tristate field
(code ‘0001’)
263
Application Hints
PEB 20550
PEF 20550
01.96