15.1.6 Chain Programming
(Ask a Question)This section describes how to perform chain programming.
15.1.6.1 Chain Order
(Ask a Question)Chain Programming allows you to program several devices at one time. The order of devices in the chain imported from Job Project must match the physical chain to be programmed.
The TDO for the first device connects to the programmer, and the last device's TDI connects to the programmer. The devices in the chain go in order from a device's TDI into the next device's TDO, as shown in the following figure.
15.1.6.2 Multiple Device Chain Programming
(Ask a Question)The FlashPro Express software allows direct chain programming without generating a chain STAPL file. Each device is programmed in sequential order, starting from device 1 to device N (see the following example).
TDI > Device N > Device N-1 >… > Device 2 > Device 1 > TDO
15.1.6.2.1 Device Programming Compatibility
(Ask a Question)PolarFire, SmartFusion 2, IGLOO 2, and RTG4 devices can be programmed in the same chain.
15.1.6.2.2 Programmer Support
(Ask a Question)FlashPro5/4/3/3X supports PolarFire, SmartFusion 2, IGLOO 2, and RTG4 devices. The Vpump on FlashPro5/4/3/3X is designed to support the programming of only one device. Make sure that Vpump, Vcc, and Vjtag are provided on board for chain programming. Connect the Vpump to the header as the Flashpro Express software will attempt to check for all external supplies, including Vpump, to ensure successful programming. There is no limitation to the chain length; however, ensure that the JTAG signal integrity and the timing are preserved.