Silicon Laboratories Computer Accessories specifications USB Debug Adapter, Contents, Pin #

USB Debug Adapter

USB DE B U G AD A P T E R US E R ’S GU I D E

1. Contents

The USB Debug Adapter package contains the following items:

•USB Debug Adapter (USB to Debug Interface) with attached 7” Ribbon Cable

2.USB Debug Adapter Specifications

The USB Debug Adapter provides the interface between the PC’s USB port and the target device’s in-system debug/programming circuitry. The attached 10-pin DEBUG ribbon cable connects the adapter to the target board and the target device’s debug interface. The USB Debug Adapter supports both Silicon Laboratories JTAG and C2 debug interfaces. Power is provided to the adapter from the USB connection to the PC. The USB Debug Adapter is capable of providing power to a circuit board via pin 10 of the DEBUG connector. See the Kit User’s Guide for instructions on powering a target board from this source. Table 1 shows the pin definitions for the DEBUG ribbon cable connector.

Notes:

•The USB Debug Adapter requires a target system clock of 32 KHz or greater.

•With the default settings, the USB Debug Adapter can supply up to 100 mA to a target system.

Table 1. USB Debug Adapter DEBUG Connector Pin Descriptions

Pin #	Description
1,8	Not Connected
2,3,9	GND (Ground)
4	TCK (C2D)
5	TMS
6	TDO
7	TDI (C2CK)
10	USB Power

Figure 1. USB Debug Adapter

Rev. 0.1 8/06 Copyright © 2006 by Silicon Laboratories USB Debug Adapter