Read Panasonic KX-DT301X Service Manual online
8
KX-DT301X / KX-DT301X-B
4.2.4.
MUP Circuit
Function:
MPU (IC1) performs (1)communication with ASIC (IC2), (2)communication with USB controller (IC3), and (3)communication
with DPT.
with DPT.
Circuit Operation:
1. Communication with ASIC (IC2)
IC1 writes transmitting data to DPT in built-in FIFO of IC2 through an address bus and data bus.
IC2 changes transmitting data into a serial format, and outputs it to its pin 21.
IC2 outputs a signal of INTN to MPU, after accumulating the receiving data from DPT inputted into its pin 20 to built-in FIFO.
IC1 reads receiving data from built-in FIFO of IC2.
Moreover, IC2 is setting up each register of IC2, and controls IC2.
IC2 changes transmitting data into a serial format, and outputs it to its pin 21.
IC2 outputs a signal of INTN to MPU, after accumulating the receiving data from DPT inputted into its pin 20 to built-in FIFO.
IC1 reads receiving data from built-in FIFO of IC2.
Moreover, IC2 is setting up each register of IC2, and controls IC2.
2. Communication with USB controller (IC3)
IC1 is performing data transmission and reception with IC3 by built-in serial interface (SCI0).
IC1 has also sent the control command to IC3.
IC1 has also sent the control command to IC3.
3. Communication with DPT
IC1 performs communication with DPT by built-in serial interface (SCI2).
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