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ADDS-2171-EZ-LAB

ADSP-2100 Family Development Tools

Analog Devices 

ADDS-21xx-TOOLS

ADDS-21xx EZ-ICE BOARD

1.800 (45.72)

ADSP-2181 CB BOARD

0.300 (7.62)

MAX ONLY

RIBBON CABLE

10 IN (254mm)

ICE-Port CONNECTOR

CUSTOMER ADSP-2181 TARGET SYSTEM

Figure 3. ADSP-2181 EZ-ICE Interface to Target System

The EZ-ICE uses the ICE-Port’s EE (emulator enable) signal to

take control of the target ADSP-2181. This causes the DSP to

automatically use its ERESET, EBR, and EBG pins instead of

the RESET, BR, and BG pins. The BG output is tristated.

And, unlike many other emulators, these signals do not need to

be jumper-isolated in your system when the EZ-ICE is installed.

Restrictions

If you are using the external memory bus in your target system,

all memory strobe signals being used on the ADSP-2181 (RD,

WR, PMS, DMS, BMS, CMS and IOMS) must have a 10 kΩ

pull-up resistor connected when the EZ-ICE is being used. The

pull-up resistors are necessary because there are no internal

pull-ups to guarantee their state during prolonged tristate

conditions resulting from typical EZ-ICE debugging sessions.

These resistors may be removed at your option when the EZ-

ICE is not being used.

Interconnection

The EZ-ICE for the ADSP-2181 uses a 10-inch long ribbon

cable to connect to the target board. The ribbon cable is

permanently attached to the EZ-ICE and is terminated with a

standard 2-row × 7-pin (0.100 × 0.100 inch pin spacing) female

IDS connector. The mating ICE-Port connector on the target

board should be a 2-row × 7-pin male (0.025-inch square pins,

minimum 0.20-inches long) pin strip header (available from

such vendors as 3M, McKenzie, and Samtec). This connector

is necessary if you intend to use the ADSP-2181 EZ-ICE. The

length of traces between this connector and the DSP should be

kept as short as possible; no more than 3-inches long. Figure 4

shows the target board connector and the pin assignments. Pins

shown with a “*” notation must be connected only to the ICE-

Port connector.

12

GND

34

EBG*

56

EBR*

78

KEY (NO PIN)

ELOUT*

9 10

11 12

EE*

RESET

13 14

BG

BR

EINT*

ELIN*

ECLK*

EMS*

ERESET*

TOP VIEW

Figure 4. Target Board Connector for ADSP-2181 EZ-ICE

ADSP-2171 Target System Requirements

To provide emulator interface capability to your target DSP

board design, you must add a pair of 45-pin male headers to

your board. The EZ-ICE’s ADDS-21xx Emulator Board (EB)

plugs directly onto the connectors, becoming a daughter card

to your target system. Figure 2 shows how this is accomplished

and some of the critical dimensions involved. (Note: Pin strip

headers should be SAMTEC part number TSW-115-07-S-T

or equivalent.) It is important that there is approximately

0.40 inches clearance around the connectors.

–12–

REV. B

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