pef20550 Infineon Technologies Corporation, pef20550 Datasheet - Page 65

• Manufacturer Part Number: pef20550
• Description: Extended Line Card Interface Controller Elic
• Manufacturer: Infineon Technologies Corporation

Transmit Direction, Response Generation
In auto-mode frames are only transmitted after the reception of a RR- or I-frame with poll
bit set.
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
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
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
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