PEF 20954 HT V1.1 Infineon Technologies, PEF 20954 HT V1.1 Datasheet - Page 63

• Manufacturer Part Number: PEF 20954 HT V1.1
• Description: IC ECHO CANCELLER DGTL TQFP144
• Manufacturer: Infineon Technologies

Specifications of PEF 20954 HT V1.1

• Function: Smart Integrated Digital Echo Canceller (SIDEC)
• Interface: PCM, Serial, UCC
• Number Of Circuits: 1
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 350mA
• Power (watts): 900mW
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 144-LFQFP
• Includes: Double Talk Detection
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: PEF20954HTV1.1; SP000007505

4.2.5
Figure 25
Note: Above values are examples only. For the use of the UCC Interface a SYNCI signal
with a period of 4 ms (equivalent to one multiframe) must be applied to the SIDEC. UCC
frame and multiframe alignment with respect to the first detection of an active SYNCI
with the falling edge of SCLKI can be configured by writing to the registers UCCALIGN
Data Sheet
(SYNCO)
(SYNCO)
(SYNCO)
TUCCO
TUCCO
TUCCO
SYNCI
SYNCI
SYNCI
SCLKI
UCCO
SCLKI
UCCO
SCLKI
UCCO
UCCI
UCCI
UCCI
UCC Interface Signal Timing and Frame Alignment
30 31 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 0 1 2 3 4 5 6 7 8 9 10 11 12
30 31 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 0 1 2 3 4 5 6 7 8 9 10 11 12
channel 31, frame 3
channel 31, frame 3
Bit 2
UCC Interface Signal Timing and Frame Alignment
Bit 0
Bit 0
Bit 1
sampling of UCCI at the
beginning of phase 2
Phase 0
Phase 0
Bit 0
Phase 1
Phase 1
Bit 7
Bit 7
Phase 2
Phase 2
Bit 6
Bit 6
UCC Interface Signal Timing and Frame Alignment
Phase 3
Phase 3
63
Bit 5
Bit 5
4 ms
Register UCCMFR = 05H (next frame = frame 5)
Phase 0
channel 0, frame 4
channel 0, frame 4
Bit 4
Bit 4
Register UCCALIGN = 01H,
Register PHALIGN[7:6] = "00"
Phase 1
Bit 3
Bit 3
Phase 2
Bit 6
Bit 2
Bit 2
Operational Description
Phase 3
Bit 1
Bit 1
Rev. 2, 2004-07-28
Bit 0
Bit 0
PEB 20954
PEF 20954
Bit 5
Bit 5
Bit 7