User`s manual

3-4 Universal Command Converter Motorola
Host Computer Hardware
Figure 3-2. 37-Pin Host Computer Interface Cable
3.1.3 Command Converter Card
The command converter is based on a DSP56002, which uses its on-chip resources to
minimize and simplify the interface to the target JTAG/OnCE debug port. Communication
with the host computer is via the DSP56002 Port B, while the serial interface to the target
DSP is via the DSP56002’s SSI port.
Each command converter has a unique address, ranging from 0 to 7. This allows the user
to debug multiprocessor systems where as many as eight command converters are
physically in the target system. JG2 of the command converter card defines the address
selected for that card.
ADM_SEL0,ADM_SEL1,ADM_SEL2 (ADDRESS SELECT)
HOST_REQ, HOST_ACK, INT_ACK (HOST COMPUTER HANDSHAKE)
ADM_REQ, ADM_ACK (COMMAND CONVERTER HANDSHAKE)
ADM_BRK, ADM_RESET (HOST COMPUTER CONTROL)
ADM_INT, HOST_BRK (COMMAND CONVERTER SERVICE REQUEST)
+5 V, GROUND (COMMAND CONVERTER POWER)
37-PIN CONNECTOR FROM HOST CARD
COMMAND CONVERTER CARD
8-BIT DATA BUS (HOST COMPUTER AND COMMAND CONVERTER)
TO COMMAND CONVERTER(S)
AA1946