PM5364 pmc-sierra, PM5364 Datasheet - Page 211

• Manufacturer Part Number: PM5364
• Description: Tupp 2488 Assp Telecom Standard
• Manufacturer: pmc-sierra

13.10.1
13.10.2
13.10.3
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2011334, Issue 7
•
For each mode, all digital blocks should be configured as set out in the register document, while
taking into account the comments here.
Normal Operation
Normal mode configures the HPOH to terminate the high order path overhead.
The HPOH Receive Configuration (0020H) register should be configured to reflect the payload
configuration of the STS-48/STM-16 stream in the receive (ingress) direction.
The HPOH Transmit Configuration (0021H) register should be configured to reflect the payload
configuration of the STS-48/STM-16 stream in the transmit (egress) direction, with
HPOH_LBEN=0.
The HPOH Transmit Alarm Preprocessing Configuration (0022H-0025H) registers should be
configured to reflect the presence of STS-1/AU3’s in the payload configuration of the STS-
48/STM-16 stream in the transmit (egress) direction.
Loopback Mode
The HPOH subsystem has a Loopback mode that is enabled by setting HPOH_LBEN=1. In this
mode the output of the RHPP_R’s are looped back into the THPP_R’s.
The HPOH Receive Configuration register should be configured to reflect the payload
configuration of the STS-48/STM-16 stream in the loopback.
The HPOH Transmit Configuration register should also be configured to reflect the payload
configuration of the STS-48/STM-16 stream in the loopback.
The HPOH Transmit Alarm Preprocessing Configuration registers may be left at its default
value.
The SHPIs and SVCA_R’s are not active in this mode their interrupt generation mechanisms
should be disabled using their internal registers, or else any interrupts from the SHPIs and
SVCA_R ignored.
This mode is intended for debugging and validation purposes only.
Transparent Mode
The RHPP_R, THPP_R and SHPI blocks in the HPOH subsystem could be optionally
configured into transparent mode (see Table 40). A block configured in this mode performs no
functions except passing control signals and data transparently through the block with a fixed
pipeline delay. It is recommended to disable all the interrupts to avoid unexpected interrupts
when the block is configured in transparent mode.
Transparent Mode
TUPP™ 2488 ASSP Telecom Standard Product Data Sheet
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