PEB3322E-V14 Lantiq, PEB3322E-V14 Datasheet - Page 38

• Manufacturer Part Number: PEB3322E-V14
• Manufacturer: Lantiq

Specifications of PEB3322E-V14

• Lead Free Status / RoHS Status: Supplier Unconfirmed

DIA register. To enable a fast access to the DIA register, the DIA register can be
addressed directly via the DIA command. All other registers as well as the command and
packet in- and out-box can’t be addressed directly. For this the PHI handles the data
transfer by address auto-incrementation.
Short commands are treated seperately and with higher priority than packet and
command data and are not handled via the command mailbox.
To optimize the data transfer during download and/or for packet transmission the size of
the in-boxes (command/packet) can be changed with the short commands wMAXCBX
(“Maximize command in-box size”
31) and wMINCBX (“Minimize command in-box size”
Packet in-box size = 255). The size of the out-boxes cannot be changed.
Before the host writes data to the VINETIC
free memory space in the desired packet- and/or command in-box. This is done by
reading the FIBXMS (free in-box memory space) register via the short command
rFIBXMS. As long as there is enough free memory space in the in-boxes (packets/
commands) the host is allowed to send data.
Every 125 s the VINETIC
the packet and command in-box. COP, SOP and IOP commands will be distributed to
the corresponding units (COP and SOP
and EOP commands will be processed by the EDSP.
In upstream direction the packet data sent from the VINETIC
256 word out-buffer (packet out-box). The responses to read commands are stored a 32
word out-buffer (command out-box). If the EDSP wants to send data (VOP or EVT
operations) to the host, it checks the free memory space in the packet out-box before
writing the data. If there is not enough memory in the packet out-box the EDSP discards
the data and sets the box-overflow flag in the Mailbox Status Register2 (BXSR2).
The communcation between host and VINETIC
handling (maskable interrupt bits—one interrupt line from VINETIC
polling (host polls VINETIC
Preliminary Product Overview
®
®
internal EDSP will read one packet and one command from
interupt and status registers).
Command in-box size = 255 / Packet in-box size =
Analog-Line-Module, IOP
38
®
, it has to make sure that there is enough
®
can either be done by interrupt
Programming of the VINETIC
Command in-box size = 31/
®
to the host is stored in a
®
Rev. 2.0, 2004-05-11
to the host) or by
PHI). VOP, EVT
VINETIC
®
®