Analog Devices ADSP-2106x SHARC User Manual page 413

1 2
GND EMU
3 4
×
Key (no pin) CLKIN (optional)
5 6
BTMS TMS
7 8
TCK
BTCK
9 10
TRST
BTRST
11 12
TDI
BTDI
13
14
GND TDO
Top View
Figure 11.3 Target Board Connector For ADSP-2106x EZ-ICE Emulator
(Jumpers In Place)
BTRST
The BTMS, BTCK, , and BTDI signals are provided so that the test
access port can also be used for board-level testing. When the connector is
not being used for emulation, place jumpers between the BXXX pins and the
XXX pins as shown in Figure 11.3. If you are not going to use the test access
BTRST
port for board testing, tie
TRST
The pin must be asserted after power-up (through
connector) or held low for proper operation of the ADSP-2106x. None of the
BXXX pins (pins 5, 7, 9, 11) are connected on the EZ-ICE probe.
The JTAG signals are terminated on the EZ-ICE probe as follows:
Signal Termination
TMS Driven through 82Ω resistor (16 mA / -3.2 mA driver)
TCK Driven through 82Ω resistor (16 mA / -3.2 mA driver)
TRST
Driven through 82Ω resistor (16 mA / -3.2 mA driver*)
and pulled up by on-chip 20 kΩ resistor
TDI Driven through 82Ω resistor (16 mA / -3.2 mA driver)
TDO One TTL load, 92Ω Thevenin termination (160Ω / 220Ω)
CLKIN One TTL load, 92Ω Thevenin termination (160Ω / 220Ω)
EMU
4.7 kΩ pullup resistor, one TTL load (open-drain output from ADSP-2106xs)
TRST
* is driven low if target board power is off, and continues to be driven low
until the EZ-ICE probe is turned on by the EZ-ICE software (after the invocation
command).
www.BDTIC.com/ADI
System Design
to GND and tie or pullup BTCK to VDD.
BTRST
11
on the
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