PEF 20550 H V2.1 Infineon Technologies, PEF 20550 H V2.1 Datasheet - Page 65

• 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

Table 12
Auto-Mode Response Generation
Received Frame
RR-poll
poll bit set
I-frame, first byte =
AxH poll bit set
I-frame, first data
byte not AxH,
poll bit set
Control Response
The control response is generated automatically.
It has the following structure.
The address is defined by the value stored in XAD1 (1-byte address) or XAD1 and XAD2
(2-byte address). The control byte is fixed to 10
Transmit Direction, Response Generation
In auto-mode frames are only transmitted after the reception of a RR- or I-frame with poll
bit set.
RR-Response
The RR-response is generated automatically.
It has the following structure.
The address is defined by the value stored in XAD1 (1-byte address) or XAD1 and XAD2
(2-byte address). The control byte is fixed to 11
Semiconductor Group
flag
flag
address
address
Response
I-frame with XFIFO-data
RR-response
I-frame with XFIFO-data
I-frame, data byte = control
response
I-frame, data byte = control
response
control byte
control byte
control resp.
65
H
H
.
(RR-frame, final bit = 1).
CRC-word
CRC-word
Condition
Command XDD executed
Command XDD not
executed
Command XPD executed
Command XPD not
executed
Functional Description
PEB 20550
PEF 20550
flag
flag
01.96