PEF 20954 HT V1.1 Infineon Technologies, PEF 20954 HT V1.1 Datasheet - Page 93

• 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

CONFIDLE[5:0] (Addr.: 32H): Configuration of IDLE Detection, write protected,
Reset value = 1DH
For idle detection the Receive In or Send In input pattern is compared either with itself
or with a maskable configurable pattern of Register IDLEPATTERN. An idle channel can
be indicated in MONSTAT2.MIDLE. An idle channel can also be displayed at pins
FLEXMON1 or FLEXMON2.
ENIDLE
IDPT[2:0]
IDLEMODE
SELSIIDLE
IDLEMASK[7:0] (Addr.: 33H): IDLE detection bit compare MASK,write protected,
Reset value = 00H
Data Sheet
MASK[7]
IDLE
-
MASK[6]
IDLE
-
"1111":
'1': Enables IDLE Detection for disabling of channels
'0': Disables IDLE detection
Determines the length of the IDLE detection/protection interval
"000": protection time = 64 ms
"001": protection time = 128 ms
"010": protection time = 512 ms
"011": protection time = 1 s
"100": protection time = 4.1 s
"101": protection time = 8.2 s
"110": protection time = 32.8s
"111": protection time = 65.5s (according ITU)
'1': IDLE detection pattern comparison operates on the last received
'0': IDLE detection pattern comparison operates on the pattern in
'1': Idle detection operates on send path input
'0': Idle detection operates on receive path input
MASK[5]
A channel that is detected to be idling will be disabled (H-Register
reset, bypass, Speech Control reset)
pattern of the actual surveyed channel
register IDLEPATTERN
ENIDLE
IDLE
Near end speech exceeds level configured in
CONFSCU3.MINLEV and background noise
and estimated echo level is monitored at pin
FLEXMON1 /FLEXMON2
MASK[4]
IDPT[2]
IDLE
93
MASK[3]
IDPT[1]
IDLE
MASK[2]
IDPT[0]
IDLE
Register Description
MASK[1]
MODE
IDLE
IDLE
Rev. 2, 2004-07-28
PEB 20954
PEF 20954
MASK[0]
SELSI
IDLE
IDLE