Specifications

42 Altera Corporation
EPXA10 Development Board Hardware Reference Manual
Jumper J14 with pins 1-2 connected is used to bypass PCI card 2 (U24)
when only one PCI card is required—PCI card 1 (U23) must be used.
By setting JSELECT to 0 (1-2 connected), you can use the
MasterBlaster/ByteBlasterMV to debug and download the device
software; see Figure 11.
Figure 11. JTAG Chain with JSELECT = 0
The maximum JTAG chain when JSELECT = 0 is as follows:
■ JTAG connector for MasterBlaster/ByteBlasterMV
■ EPXA10 device (both PLD and embedded processor)
■ Up to eight EPC2 devices (U1-U8)
■ Up to two PCIs (U23 and U24)
When JSELECT = 1 (2-3 connected), there are two JTAG chains, one for the
PLD and one for the embedded processor. The maximum JTAG chains are
as follows:
■ For the PLD
– JTAG connector for MasterBlaster/ByteBlasterMV or SignalTAP
– Up to eight EPC2 devices (U1-U8)
– Up to two PCIs (U23 and U24)
■ For the embedded processor
– JTAG connector for Multi-ICE
Table 31. Bypass Settings for EPC2
JP57 Pins 1 & 2 Connected JP57 Pins 2 & 3 Connected
JP50 Pins 1 & 2 Connected
Bypass EPC2 (U7-U8) Bypass all EPC2s (U1-U8)
JP50 Pins 2 & 3 Connected
No bypass No bypass
Micro
proce
ssor
PLD
8 x EPC2
MasterBlaster/
ByteBlaster
Connector
EPXA10
TDO TDO
TMS, TCK, NTRST
TDO
TMS, TCK
TDI
TDI
TDI/
TDO