cn8236 Mindspeed Technologies, cn8236 Datasheet - Page 296
cn8236
Manufacturer Part Number
cn8236
Description
Atm Servicesar Plus With Xbr Traffic Management
Manufacturer
Mindspeed Technologies
Datasheet
1.CN8236.pdf
(443 pages)
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12.0 ATM UTOPIA Interface
12.3 ATM Physical I/O Pins
12.3.1 UTOPIA Interface
12-6
In addition to the current UTOPIA level 1 support, this interface provides
complete support for UTOPIA level 2, 8/16 bit mode in both master and slave
modes, including support for multi-PHY in both master and slave modes.
Multi-PHY port shaping is provided by tunnels through one TxFIFO buffer. A
3-bit PORT_ID is used to provide port identification for up to 8 ports in master
mode (UTOPIA address 0 through 7) and 32 ports in slave mode. The UTOPIA
output drives are 8 mA to meet the multi-PHY specification.
high. In master mode, the PORT_ID field is used as a port identification. On the
segmentation side, the appropriate port identification is written in the PORT_ID
field in the VCC table entry. The maximum allowable PORT_ID is
CONFIG1(NUM_PORTS). On the reassembly side, the UTOPIA interface polls
addresses 0 through CONFIG1(NUM_PORTS) for a cell. When a cell is detected
in a PHY, the cell along with the PORT_ID is transferred to the reassembly block.
An expanded lookup mechanism is used to find the appropriate state table entry.
(See
equals CONFIG1(SLAVE_ADDR). In non-multi-PHY master mode,
CONFIG1(SLAVE_ADDR) is output on the RxAddr and TxAddr busses.
64 bytes in single PHY master mode and single/multi-PHY slave mode. On the
reassembly side, the tag is discarded by the UTOPIA interface.
content of all cells including OAM within the VP must be identical.
Multi-PHY mode is enabled by setting CONFIG1(MULTI_PHY) to a logic
In slave mode, the UTOPIA block responds only when the UTOPIA address
Also, routing tag prepending is supported with programmable cell size up to
When F4 PMOAM operation or VP ABR operation is enabled, the routing tag
Section 5.2.2.5
Mindspeed Technologies
for more details.)
ATM ServiceSAR Plus with xBR Traffic Management
™
28236-DSH-001-B
CN8236
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