Addendum 2001-04-18 Addendum to the C165UTAH Data Sheet, 2001-02-23 Embedded C166 with USB, IOM-2 and HDLC Support C165UTAH Please, replace the erroneous description in the C165UTAH Data Sheet, 2001-02-23, by the following correct text: 1 EPEC_CTRL_REGx (x=7..0) Page 99 EPEC_CTRL_REGx Source Pointer Register Table 20 Bit No. Name Function 14 EXT_SRC External Source '1': External source is selected '0': Reserved (program memory) EXT_SRC must be set to '1' wrong 14 EXT_SRC External Source (correct) '1': Reserved (program memory) '0': External source is selected EXT_SRC must be set to '0' correct Revision History: Major Changes: Addendum 2001-04-18 C165UTAH Addendum 2 Boundary Scan / JTAG / Test Interface Signals/OCDS Page 25 Table 7 Boundary Scan / JTAG / Test Interface Signals/OCDS Pin No. Symbol Input (I) Output (O) Function 6 TMS I Boundary Scan Test Mode Select Input, internal pull-up. 144 TRST I Boundary Scan Test Reset. There is an internal pull-up device implemented. TRST is low active, which means the boundary scan tap controller resets while TRST = '0'. For normal operation, * TRST can be connected to a LOW signal (using '0' signal or external pull-down device) to keep the tap controller in reset mode, or * TRST can be left open. In this case, the reset is performed using the TMS/TCK signals according to IEEE 1149.1 In boundary scan test mode, TRST can be left open, since the internal pull-up device provides the necessary HIGH signal. Addendum 2 2001-04-18