80KSBR200 Datasheet, PDF (112/172 Pages) Integrated Device Technology – sRIO SERIAL BUFFER FLOW-CONTROL DEVICE

IDT 80KSBR200
Notes
Advanced Datasheet*
after the default configuration is active, the user should be aware that data or additional configuration information might be
accepted on multiple ports. The user must exercise care to insure that the incoming configuration and data does not inter-
fere with the device programming. In many cases, a partial reset may clear unwanted data, but may cause corruption of
active transfers.
Before operation, the SerB must be configured. The steps of configuration are as follows:
◆ _{Power on. No power sequencing is required, but all power supplies must have achieved the minimum required}
level before proceeding.
◆ _{Master reset may be applied at any time. If reset is performed in association with Power on, reset may be}
applied before, during or after Power On, but the reset must be held after achieving valid power levels for the
designated minimum number of clock cycles (defined in the electrical section).
◆ _{SerB will initialize itself according to the hard-wired pins.}
– The PLLs will take time to lock
– The PHYs will begin to negotiate with neighboring devices, attempting to establish links
– The memory will be allocated, per the default configuration
◆ _I2_{C may be used for additional programming if required without waiting for PLL lock. All of the configuration}
registers may be programmed through I²C.
◆ _{JTAG has access to the configuration registers. If JTAG is not used for additional programming, the JTAG}
inputs should be disabled. Full operation of JTAG is described in the JTAG section.
◆ _{In the event that the SerB needs to be programmed over a serial port, the serial port must have achieved full}
Link Up status before programming may commence.
◆ _{If interrupt masks are needed, the masks should be programmed using one of the programming methods.}
◆ _{After programming, the SerB should be fully functional. It should be noted that the SerB may be reconfigured}
at any time. It should be noted that at any time, the SerB may reconfigured through I²C or a Serial Port.
9.5 Initialization of RIO Ports
The sRIO ports shall be initialized before they are operational. More needs to be developed on this topic, but as a start,
the following references should be made:
◆ _{PPS specification an sRIO port Initialization}
◆ _{RIO Physical Layer Specification section 4.6}
◆ _{RIO System Bring-up document for explanation and examples of system bring-up}
◆ _{Hard-wired pin description}
The initialization of the sRIO ports may be influenced by the following sources:
◆ _{sRIO maintenance packets}
◆ _I2_{C programming}
◆ _{JTAG programming}
◆ _{Hard-wired inputs}
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March 19, 2007
„2005 Integrated Device Technology, Inc. All rights reserved. Advanced Datasheet for informational purposes only. Product specifications subject to change without notice.NOT AN OFFER FOR SALE The information presented herein is subject to a
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