3

ATDH1150USB – ATF15xx CPLD JTAG ISP Download Cable [USER GUIDE]

Atmel-8909A-CPLD-ATDH1150USB-ATF15-JTAG-ISP-Download-Cable-UserGuide_072015

Functional Description

The ATDH1150USB ISP Download Cable connects to the PC host’s USB port on one side using the

USB cable provided to communicate with ATMISP. On the other end, the cable is connected to a 10-

pin or 14-pin JTAG header on the programming circuit board using the 10-wire ribbon cable provided

or a 14-wire ribbon cable (not included) to communicate with the target JTAG devices. Users can

choose to use either one of the two JTAG connectors (JTAG-A and JTAG-X) available on the

ATDH1150USB based on their requirements; however, these two JTAG connectors should not be

used at the same time.

A functional block diagram of the ATDH1150USB ISP Download Cable is shown in the below figure,

and Table 1 and Table 2 provide the pin assignments and signal descriptions for the two JTAG

connectors.

Figure 1.

ATDH1150USB ISP Download Cable Functional Block Diagram

The second 10-pin header labeled TWI on the ATDH1150USB is not supported and should

not be used.

2, 10

4

1

FTDI

USB Transceiver

2

3

4

1

5

9

3

1, 3, 5, 7,

9, 11, 13

2

6

8

10

4