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XC800 Interface Connector

An OCDS connector is easily added to the user hardware. The OCDS interface allows application debugging and programming of on-board Flash ROM devices.

The Infineon XC800 device must be wired to the OCDS connector pins as described in the following table.

Pin Standard OCDS Signal XC86x Connection
TMS Test mode select input (according to the IEEE 1149.1 Standard) TMS pin: Use 100KOhm pull-up resistor to VCC
TDO Test data output (according to the IEEE 1149.1 Standard) TDO pin
CPUCLK CPU clock (according IEEE Standard 1149.1) Not used on KEIL ULINK
TDI Test data input (according IEEE Standard TDI pin: Use 100KOhm pull-up resistor to VCC
TRST Test reset input (according IEEE Standard 1149.1) TRST/ pin: Use 100KOhm pull-down resistor to GND
TCK Test clock input (according IEEE Standard TCK pin: Use 100KOhm pull-up resistor to VCC
BRKIN Hardware break in (Infineon-specific) BRKIN pin: Use 100KOhm pull-up resistor to VCC.
Not used on KEIL ULINK
TRAP Trap condition (Infineon-specific) Not used on XC800 Devices
VCC Positive Supply Voltage Supply Voltage (+5V)
GND Digital Ground Digital Ground
RESET Chip reset (Infineon specific) RSTIN/ pin: Use 100KOhm pull-up resistor to VCC
BRKOUT Hardware break out (Infineon-specific) BRKOUT pin: Not used on KEIL ULINK
OCDS Enable/Disable OCDS interface
(Infineon-specific)
Not used on XC800 Devices

The pins TMS, TDO, TDI, TCK, BRKIN, BRKOUT may share I/O Port pins on some of the XC800 series devices. The pins TRST and RESET are open collector outputs on KEIL ULINK with 10K Ohm pull-up resistor to 3.3V (VCC).

Pin Connector OCDS is typically implemented using a 16-pin IDC connector with 0.1 inch (2.54mm) spacing. The connector pin-out is illustrated at the right.

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