PEF 20954 HT V1.1 Infineon Technologies, PEF 20954 HT V1.1 Datasheet - Page 147

• 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

6.6.8
Figure 40
Table 45
No.
1
2
3
4
5
The written value of a register wil be valid for read back 120 ns after rising edge of the
WR/RW signal.
Data Sheet
Internal Read
Internal Write
Parameter
Active time
Inactive time
Active time
Inactive time
Interval between two active rising write
edges
Microprocessor Interface
Internal Read Signal and Internal Write Signal
Preliminary Internal Read and Write Signal Timing
Internal Read Condition:
SIEMENS/Intel Mode (IM0 = '0'):(CS0 = '0' or CS1 = '0') and RD/DS = '0'
Motorola Mode (IM0 = '1'):
Internal Read Condition:
SIEMENS/Intel Mode (IM0 = '0'):(CS0 = '0' or CS1 = '0') and WR/RW = '0'
Motorola Mode (IM0 = '1'):
3
1
4
147
(CS0 = '0' or CS1 = '0') and RD/DS = '0' and WR/RW = '1'
2
(CS0 = '0' or CS1 = '0') and RD/DS = '0' and WR/RW = '1'
5
min.
40
40
40
40
120
Internal read and write Signal
Limit Values
Electrical Characteristics
max.
Rev. 2, 2004-07-28
PEB 20954
PEF 20954
Unit
ns
ns
ns
ns
ns