PEB24911HV13 Lantiq, PEB24911HV13 Datasheet - Page 35

• Manufacturer Part Number: PEB24911HV13
• Manufacturer: Lantiq

Specifications of PEB24911HV13

• Lead Free Status / Rohs Status: Supplier Unconfirmed

PEF 24911
Functional Description
Besides the known MON-0/2/8 commands a new MON class, MON-12 is introduced in
the DFE-Q V2.1:
New MON-12 Class
By use of MON-12 commands the DFE-Q V2.1 provides the ability to address parts of
the device internal register map and thus to address functions that have been added with
version 2.1. MON-12 commands are always prioritized and processed first if other
Monitor commands are outstanding. See
Chapter 3.2.5
for the details.
This means that Monitor commands are split into four categories. Each category derives
its name from the first nibble (4 bits) of the two byte long message. These are:
• MON-12(Internal Register Map)
• MON-0(Transparent Channel)
• MON-2(Overhead Bits)
• MON-8(Local Functions)
The order of the list above corresponds to the priority attributed to each category. MON-
12 commands are always processed first. MON-0 messages will be transmitted before
MON-2 messages in case several messages are initiated simultaneously. The various
MON-0, MON-2 and MON-8-commands are discussed in detail in
Chapter
5,
“Monitor
Commands” on Page
110.
Structure
The structure of the Monitor channel is 8 bit wide, located at bit position 17 – 24 in every
time-slot. Monitor commands/messages sent to/from the U-transceiver are always 2
bytes long.
®
Transmission of multiple monitor bytes is specified by IOM
-2 (see next section
“Handshake Procedure” for details). For handshake control in multiple byte transfers, bit
31, monitor read “MR”, and bit 32, monitor transmit “MX”, of every time-slot are used.
Verification
A double last-look criterion is implemented for the monitor channel. If the monitor
message that was received consecutively after a change has been detected is not
identical to the message that was received before the message will be aborted.
Handshake Procedure
®
IOM
-2 provides a sophisticated handshake procedure for the transfer of monitor
®
messages. For handshake control two bits, MX and MR, are assigned to each IOM
-2
frame (on DIN and DOUT). The monitor transmit bit (MX) indicates when a new byte has
been issued in the monitor channel (active low). The transmitter postpones transmitting
the next information until the correct reception has been confirmed. A correct reception
will be confirmed by setting the monitor read bit (MR) to low.
Data Sheet
25
2001-07-16