Jtag; Main Characteristics - 4DSP FMC230 User Manual

UM023 FMC230 User Manual
FMC Top Connector
The top connector is the main connector to the FMC carrier board. The pin-out is defined in
the appendix. The connector is a HPC connector.
FMC Bottom Connector
The high-pin count connector enables FMC card stacking. The following connections are
available between the top and bottom FMC connector:

Unused gigabit data signals (DP[4..9]_M2C_P/N, DP[0..9]_C2M_P/N)

All gigabit reference clocks (GBTCLK[0..1]_M2C_P/N)

RES0

3P3VAUX, 3P3V, 12P0V, VADJ

JTAG (see section 4.2.1)
The bottom connector is not mounted by default.

4.2.1 JTAG

In a stacked environment, the TDI pin will be decoupled from the TDO pin by the
PRST_M2C_L signal coming from the bottom connector. TRST#, TCK, TMS, TDI, and TDO
are directly connected between top to bottom connector.

4.3 Main characteristics

Number of channels
Channel resolution
Output voltage range
Output impedance
UM023
Bottom connector (to stacked FMC)
TRST#
TCK TMS
TRST#
TCK TMS
Top connector (to FMC carrier)
Figure 3: JTAG Connection
2
14-bit
1.12 Vpp (5 dBm)
50Ω (optimized output impedance for mixed-mode operation)
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TDI TDO PRSNT_M2C_L
3P3V
OE
CPLD
TDI TDO PRSNT_M2C_L
Analog outputs
r1.11
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