pxf4336 Infineon Technologies Corporation, pxf4336 Datasheet - Page 113

• Manufacturer Part Number: pxf4336
• Description: Abm Premium Atm Buf Fer Manager
• Manufacturer: Infineon Technologies Corporation

3.5.2.2.5 RM_Cell_Update
In case of ABR-ER mode, this message is sent to inform the ABM-P core about the
results of the last ER calculation. If the emitted cell is an RM cell, the fields CI, NI, and
ER (if necessary) are updated. All other parameters are ignored.
3.5.2.3
The ERC mailbox is used by an external micro-controller to communicate with the IOP
through the Microprocessor Interface. The micro-controller writes command messages
to the control and data registers which are evaluated by the IOP firmware. One control
bit initiates an interrupt to the IOP.
The usage of command and data fields is firmware implementation specific. A
handshake protocol is implemented in firmware to exchange information.
Note: The hardware does not determine the usage and interpretation of commands.
Command List
The ERC mailbox is used, for instance, at system setup or setup of queues in order to
initialize appropriate variables of the IOP. The available commands use the following
parameters:
ConnTableWrite:
ConnTableRead:
ABMWriteRegister: Command=0x3
ABMReadRegister: Command=0x4
ExtdRAMWrite:
ExtdRAMRead:
InitIOP:
CacheVarWrite:
CacheVarRead:
WriteIOPRegister:
ReadIOPRegister:
Commands are transferred via
case of read or write operations Register
while
Note: For ERC unit configuration, only the commands InitIOP, CacheVarWrite and
Data Sheet
ERCMB2
These are determined by firmware and must be known to the device driver
software.
CacheVarRead are relevant.
ERC Mailbox
transfers the data word.
Command=0x1
Command=0x2
Command=0x5
Command=0x6
Command=0x7
Command=0x8
Command=0x9
Command=0xA
Command=0xB
Register "ERC MailBox Register 0" on Page
113
ERCMB1
transfers the address to the IOP
Functional Description
PXF 4336 V1.1
2001-12-17
ABM-P
335. In