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Single Device Programming
Single Device Configuration
Single Device Programming
When devices are joined together in a JTAG chain, all of their Instruction Registers (IR) and Data Registers
(DR) are put in a long shift register from TDI to TDO. The IR length defers from device to device and the DR length depends on the instruction that shifts into the instruction register.
When targeting Device 2 (see figure below), you need to know the IR length for Device 1 and Device 3.
Given this information, you can bypass both devices by shifting an all one pattern into their instruction registers before and after the instruction targeted at Device 2. The number of bits you shift before Device 2's instruction is the pre IR length, and the number of bits you need to add after Device 2's instruction is the post
IR length. In this case, the pre IR bits are shifted into
Device 1 and post IR bits are shifted into Device 3.
Figure 108 ·
Targeting Device 2
When the bypass instruction is shifted into Device 1 and Device 3, the TDI and TDO of the two devices are connected to the 1-bit bypass register at the Shift-DR state. To correctly shift the data in and data out of
Device 2's register, you need to shift one bit of data before and after Device 2's data.
The number of bits you need to shift into the data register for Device 1 is the pre-DR length and the number of bits we need to shift into the data register for Device 3 is the post-DR length. With the IR and DR length information, you can shift instructions and data into Device 2 with the correct registration.
To create the JTAG chain (shown in the above figure):
1. Connect the TCK and TMS from the programmer to all of the devices.
2. Connect the programmer’s TDI pin to the TDI pin of device 3.
3. For all devices in the chain, connect the TDO output of one device to the TDI input of the next device.
4. Connect the TDO output of the last device to the programmer’s TDO input.
The order of devices in the chain is set by the connections of TDI to TDO.
The ChainBuilder software takes the order of the devices in a chain and their IR lengths and adds the pre-
IR, post-IR, pre-DR, and post-DR padding bits in the device you want to program, which properly aligns the instructions and data within the IR and DR of the devices.
If you do not use the ChainBuilder software, the FlashPro software tries to find the pre-IR, post IR, pre-DR, and post-DR values during the Analyze Chain operation.
For more information, see ProASIC programming and ProASICPLUS and ProASIC programming introduction .
To find out how to set the IR length, see Chain Settings .
Loading a Programming File
You can either load a programming file from the Configuration menu or from the Single Device
Programming Window. The section below describes how to load a programming file from the Single
Device Programming Window.
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To Load a programming file from the Single Device Programming window:
1. From the View menu, choose Single Device Configuration to activate the Single Device
Configuration Window.
2. Click the Browse button in the Single Device Configuration Window (see figure below).
Figure 109 · Signal Device Configuration Window
The Load Programming File dialog box appears.
3. Navigate to your programming file, select it, and click Open. The programming file is loaded and the
Single Device Configuration Window updates.
Select Target Device
The Select Target Device dialog box is located in the Configuration menu.
The Select Target Device dialog box enables you to select the target device you want to program. If you are only programming one device in a chain, there is no need for you to make a selection. The Select
Target Device dialog box automatically displays your device (see figure below).
Figure 110 · Select Target Device (One Device in a Chain)
If you are programming more than one Flash device in a chain, you need to select the target device you want to program. If you attempt to program your device without selecting a target device, a warning message appears.
If the warning message appears, click OK and the Select Target Device dialog box appears. From the
Select Target Device dialog box, select the device you want to program (see figure below).
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Figure 111 · Select Target Device (Multiple Devices in a Chain)
Click the down arrow to display the list of devices in your chain. Then, make your selection and click OK.
FlashPro User's Guide
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Chain Settings
Note: When the FlashPro software does not detect your chain configuration, you must specify the Pre/Post IR fields by entering these values in the Set Pre/Post IR Values dialog box (see figure below).
Figure 112 · Pre IR and Post IR Values for the Target Device
For more information, see Single STAPL file programming information .
Chain Settings
Click the Chain Parameter button in the Single Device Configuration window to set the chain settings
(see the Chain Settings dialog box below). See Single Device Programming Information for more
information about these STAPL settings.
Figure 113 · Chain Settings Dialog Box
Serial Settings
Click the Select Serialization Indexes/Select Serialization Actions button from the Single Device
Configuration Window. The Serial Settings dialog box appears (as shown in the figure below).
Note: Depending on the STAPL file format (Microsemi format or generic format) used, you will either see Indexes columns or Actions columns in the Serial Settings dialog box.
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Figure 114 · Serial Settings Dialog Box
Click the red arrow buttons in the center of the dialog box to move from the Actions column to the Selected
Actions column. The indexes/actions available for selection are located on the left and the indexes/actions you choose to select are located on the right column. Viewing options are available in the checkboxes under the Actions column. If you check Log serial data, you can select the FlashROM region name where the serial data will be stored.
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