Configuration Handbook - Kamami.pl

Configuring Mercury, APEX 20K (2.5 V), ACEX 1K & FLEX 10K DevicesFigure 8–25. JTAG Configuration of a Single Device Using a Download CableVCC (1)(1) VCC(1) VCC1 kΩ1 kΩGND N.C.nCE (4)1 kΩMercury, APEX 20K (2.5-V),ACEX 1K or FLEX 10K DevicenCE0TCKTDOVCC (1)1 kΩ(2)(2)(2)nSTATUSCONF_DONEnCONFIGMSEL0MSEL1TMSTDITRSTVCCDownload Cable10-Pin Male Header(JTAG Mode)(Top View)Pin 1VCCGNDVIO (3)1 kΩGNDGNDNotes to Figure 8–25:(1) The pull-up resistor should be connected to the same supply voltage as the USB Blaster, MasterBlaster (VIO pin),ByteBlaster II, or ByteBlasterMV cable.(2) The nCONFIG, MSEL0, and MSEL1 pins should be connected to support a non-JTAG configuration scheme. If onlyJTAG configuration is used, connect nCONFIG to V CC , and MSEL0 and MSEL1 to ground.(3) Pin 6 of the header is a VIO reference voltage for the MasterBlaster output driver. VIO should match the device’sV CCIO . Refer to the MasterBlaster Serial/USB Communications Cable Data Sheet for this value. In the ByteBlasterMV, thispin is a no connect. In the USB Blaster and ByteBlaster II, this pin is connected to nCE when it is used for ActiveSerial programming, otherwise it is a no connect.(4) nCE must be connected to GND or driven low for successful JTAG configuration.To configure a single device in a JTAG chain, the programming softwareplaces all other devices in BYPASS mode. In BYPASS mode, devices passprogramming data from the TDI pin to the TDO pin through a singlebypass register without being affected internally. This scheme enables theprogramming software to program or verify the target device.Configuration data driven into the device appears on the TDO pin oneclock cycle later.Altera Corporation 8–59August 2005 Configuration Handbook, Volume 1