PEF 20550 H V2.1 Infineon Technologies, PEF 20550 H V2.1 Datasheet - Page 330

• 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

2) In PCM mode 0 and CFI mode 0, the P shall have access to both the downstream
Wait for next SIN interrupt and transfer further data bytes … .
Examples
1) In PCM mode 0, the synchronous transfer utility (channel A) shall be used to loop
Semiconductor Group
bits 7 … 6 of downstream PCM port 1, timeslot 5 back to bits 7 … 6 of upstream
PCM port 2, timeslot 9. Since no P access to the data is required the ISTA_E:SIN
and SOV bits are both masked:
W:MASK
W:SARA
W:SAXA
W:STCR
and upstream CFI port 0, timeslot 1 via the synchronous transfer channel B:
W:SARB
W:SAXB
W:STCR
Wait for interrupt:
R:ISTA
R:SADB
W:SADB
= downstream CFI data
= 03
= 13
= 25
= 47
= 81
= 81
= 88
= 02
= upstream CFI data
H
H
H
H
H
H
H
H
; SIN = SOV = 1
; ISRA = 0, port 1, TS5
; ISXA = 0, port 2, TS9
; TAE = 1, CTA2 … 0 = 111 (bits 7 … 6)
; ISRB = 1, port 0, TS1
; ISXB = 1, port 0, TS1
; TBE = 1, CTA2 … 0 = 001 (bits 7 … 0)
; SIN = 1
330
Application Hints
PEB 20550
PEF 20550
01.96