S/UNI®-ATLAS-3200 Telecom Standard Product Data Sheet
Preliminary
The S/UNI-ATLAS-3200 output interface must behave as an Rx PHY layer device on the
UTOPIA bus. As a PHY layer device, it responds with the appropriate cell available status when a
channel address is on the bus, RPU_ADDR. When the Link Layer device (a TM or switch)
engages a transfer, the S/UNI-ATLAS-3200 must respond by sending the next cell for the channel
that has been selected. Optionally, the S/UNI-ATLAS-3200 will behave as a single-PHY device,
ignoring RPU_ADDR. It will service the internal per-PHY cell queues in a weighted round-robin
fashion controlled by a software-configurable calendar. The calendar is programmed via the
RxPhy block’s Calendar Address and Data Register, and is described in Section 10.1.7. The
RxPhy block, assisted by the SDQ block (see below) performs these functions. The RxPhy
configuration registers may be found in section 11.9.
10.1.2 Egress Mode with UTOPIA Level 3 Signaling
In this configuration, the S/UNI-ATLAS-3200 receives traffic from a traffic manager, and
transmits traffic to a PHY. This traffic consists of ATM cells, transferred using UTOPIA Level 3
signaling.
Figure 6 UTOPIA Level 3 Egress Interface
SRAM Interface
JTAG
CELL FLOW
JTAG Interface
Packet Bypass
FIFO
Ingress Input:
Ingress Output:
UL3 slave or
UL3 master or
POS PHY link
layer interface
Cell Processor
POS PHY phy
layer interface
TPU_DAT[31:0]
Policing, OAM,
TLU_DAT[31:0]
TLU_SOC
TLU_PAR
TLU_CLAV
TLU_WRENB
TLU_ADDR[5:0]
TLU_CLK
Statistics,
Egress Input:
UL3 slave or
POS PHY phy
TPU_SOC
TPU_PAR
TPU_CLAV
Egress Output:
UL3 master or
Translation
POS PHY link
UL3
layer interface
UL3
layer interface
Tx Master
Tx Slave
TPU_WRENB
TPU_ADDR[5:0]
Interface
Interface
Connection Table
(Embedded
DRAM)
TPU_CLK
Input
Output
Microprocessor
Cell Interface
(IMCIF)
Microprocessor
Cell Interface
(OMCIF)
SCI-PHY
Interface
SCI-PHY
Interface
CPU Interface
Backward output cell
interface
Backward Input Cell
Interface
Microprocessor Interface
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1990553, Issue 4
65
PMC [ PMC-SIERRA, INC ]
