PEF 20550 H V2.1 Infineon Technologies, PEF 20550 H V2.1 Datasheet - Page 262

• 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

– reading back the involved bandwidth and PCM sub-timeslot position:
Disabling the PCM Output Driver
Programming of a 64 kBit/s CFI - PCM Timeslot Connection
– in case the CM code field has not yet been initialized with a switching code:
– in case the CM code field has already been initialized with a switching code:
Enabling the PCM Output Driver for a 64 kBit/s Timeslot
Reading Back a Timeslot Assignment of a Given CFI Timeslot
– reading back the PCM timeslot involved:
Cancelling of a Programmed CFI - PCM Timeslot Connection
Semiconductor Group
W:MADR = PCM port and timeslot encoded according to figure 84
W:MAAR
W:MACR = 0111 0001
W:MADR = PCM port and timeslot encoded according to figure 84
W:MAAR
W:MACR = 0100 1000
W:MADR = XXXX 1111
W:MAAR
W:MACR = 0110 0000
W:MAAR
W:MACR = 1100 1000
wait for STAR:MAC = 0
R:MADR
W:MAAR
W:MACR = 1111 0000
wait for STAR:MAC = 0
R:MADR
W:MADR = don’t care
W:MAAR
W:MACR = 0111 0000
W:MADR = XXXX 0000
W:MAAR
W:MACR = 0110 0000
= CFI port and timeslot encoded according to figure 84
= CFI port and timeslot encoded according to figure 84
= PCM port and timeslot encoded according to figure 84
= CFI port and timeslot encoded according to figure 84
= PCM port and timeslot encoded according to figure 84
= CFI port and timeslot encoded according to figure 84
= XXXX code; 4 bit bandwidth code encoded according to table 40
= CFI port and timeslot encoded according to figure 84
= PCM port and timeslot encoded according to figure 84
B
B
B
B
B
B
B
B
B
= 71
= 48
= 60
= C8
= F0
= 70
= 60
= XF
= X0
H
H
H
H
H
H
H
H
H
; code ‘0000’ (unassigned channel)
262
Application Hints
PEB 20550
PEF 20550
01.96