S/UNI-ATLAS-3200 Telecom Standard Product Data Sheet
Preliminary
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1990553, Issue 4
392
1.
Read the Indirect Address register until BUSY = 0
2.
Write the desired values into the Indirect Configuration register
3.
Write to the Indirect Address register with RWB = 0, PHYID = desired PHY, and FLUSH = 1
4.
Poll the Indirect Address register until BUSY = 0
5.
Write to the Indirect Address register with RWB = 0, PHYID = desired PHY, and FLUSH = 0
When reconfiguring the SDQ while traffic is passing through, all FIFOs that are being affected by
the reconfiguration should be disabled and flushed, and held that way until the reconfiguration is
complete. FIFOs unaffected by the reconfiguration will continue to carry traffic normally.
13.2
JTAG Support
The S/UNI-ATLAS-3200 supports the IEEE Boundary Scan Specification as described in the
IEEE 1149.1 standards. The Test Access Port (TAP) consists of the five standard pins, TRSTB,
TCK, TMS, TDI and TDO used to control the TAP controller and the boundary scan registers.
The TRSTB input is the active-low reset signal used to reset the TAP controller. TCK is the test
clock used to sample data on input, TDI and to output data on output, TDO. The TMS input is
used to direct the TAP controller through its states. The basic boundary scan architecture is
shown: