ML605 Hardware User Guide
29
UG534 (v1.9) February 26, 2019
Detailed Description
6. USB JTAG
JTAG configuration is provided through onboard USB-to-JTAG configuration logic where
a computer host accesses the ML605 JTAG chain through a Type-A (computer host side) to
Type-Mini-B (ML605 side) USB cable.
The JTAG chain of the board is illustrated in the figure below. JTAG configuration is
allowable at any time under any mode pin setting. JTAG initiated configuration takes
priority over the mode pin settings.
FMC bypass jumpers J17 and J18 must be connected between pins 1-2 (bypass) to enable
JTAG access to the FPGA on the basic ML605 board (without FMC expansion modules
installed), as shown in
. When either or both VITA 57.1 FMC
expansion connectors are populated with an expansion module that has a JTAG chain, the
respective jumper(s) must be set to connect pins 2-3 in order to include the FMC expansion
module's JTAG chain in the main ML605 JTAG chain.
X-Ref Target - Figure 1-4
Figure 1-4:
JTAG Chain Diagram
J22
U
S
B Mini-B
FMC HPC
FMC LPC
TDI
TDO
J64
TDI
TDI
TDO
TDO
J6
3
J17
J18
3
.
3
V
2.5V
S
y
s
tem ACE CF
FPGA
T
S
TTDI
CFGTDO
T
S
TTDO
CFGTDI
U19
U1
UG5
3
4_04_081
3
09
X-Ref Target - Figure 1-5
Figure 1-5:
VITA 57.1 FMC HPC (J64) JTAG Bypass Jumper J17
X-Ref Target - Figure 1-6
Figure 1-6:
VITA 57.1 FMC LPC (J63) JTAG Bypass Jumper J18
J17
1
FMC_TDI_BUF
Bypass FMC HPC J64 = Jumper 1-2
Include FMC HPC J64 = Jumper 2-3
H - 1x3
UG534_05_0
8
1309
2
FMC_LPC_TDI
3
FMC_HPC_TDO
J1
8
1
FMC_LPC_TDI
Bypass FMC LPC J63 = Jumper 1-2
Include FMC LPC J63 = Jumper 2-3
H - 1x3
UG534_06_0
8
1309
2
SYSACE_TDI
3
FMC_LPC_TDO