PEB24911HV13 Lantiq, PEB24911HV13 Datasheet - Page 37

• Manufacturer Part Number: PEB24911HV13
• Manufacturer: Lantiq

Specifications of PEB24911HV13

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Standard Transmission Procedure
1. The first byte of monitor data is placed by the external controller on the DIN line of the
2. The DFE-Q V2.1 reads the data of the monitor channel and acknowledges by setting
3. The second byte of monitor data is placed by the controller on DIN and the MX-bit is
4. The DFE-Q V2.1 reads the new data byte in the monitor channel after the rising edge
5. After both monitor data bytes have been transferred to the DFE-Q V2.1, the controller
6. In the frame following the transition of the MX-bit from active to inactive, the DFE-Q
7. If the DFE-Q V2.1 is requested to return an answer it will commence with the response
Transmission Abortion
If no EOM is detected after the first two monitor bytes, or received bytes are not identical
in the first two received frames, transmission will be aborted through receiver by setting
the MR-bit inactive for two or more IOM
situation is illustrated in
Data Sheet
DFE-Q V2.1 and MX is activated (low; frame No. 1).
the MR-bit of DOUT active if the transmitted bytes are identical in two received frames
(frame No. 2 because data are already read and compared while the MX-bit is not
activated).
set inactive for one single IOM
controller.
of MX has been detected. In the frame immediately following the MX-transition active-
to-inactive, the MR-bit of DOUT is set inactive. The MR-transition inactive-to-active
exactly one IOM
controller (frame No. 4–5).
The acknowledgement by the DFE-Q V2.1 will always be sent two IOM
the activation of a new data byte.
transmits “End Of Message” (EOM) by setting the MX-bit inactive for two or more
IOM
V2.1 sets the MR-bit inactive (as was the case in step 4). As it detects EOM, it keeps
the MR-bit inactive (frame No. 6). The transmission of the monitor command by the
controller is complete.
as soon as possible.
immediately.
The procedure for the response is similar to that described in points 1 – 6 except for
the transmission direction. It is assumed that the controller does not latch monitor
data. For this reason one additional frame will be required for acknowledgement.
Transmission of the 2nd monitor byte will be started by the DFE-Q V2.1 in the frame
immediately following the acknowledgment of the first byte. The U-transceiver does
not delay the monitor transfer.
®
-frames (frame No. 5–6).
®
-frame later is regarded as acknowledgment by the external
Figure 12
Figure
13.
®
-frame. This is performed at a time convenient to the
illustrates the case where the response can be sent
®
-2-frames. The controller reacts with EOM. This
27
Functional Description
®
-frames after
PEF 24911
2001-07-16