Datasheet

78M6612 Data Sheet DS_6612_001
20 Rev 2
2.4 CE/MPU Communication
Figure 7 shows the functional relationship between the CE and the MPU. The CE is controlled by the
MPU via shared registers in the I/O RAM and RAM. The CE outputs two interrupt signals to the MPU to
indicate the CE is actively processing data and the CE is updating data to the output region of the RAM.
Figure 7: MPU/CE Communication
MP
U
C
E
PULSES
INTERRUPTS
DISPLAY (Memory
Mapped
LCD
Segments)
DIO
EEPROM
(I2C
)
SERIAL
(UART0/1)
SAMPLES
VAR (DIO7)
W
(DIO6)
VARSU
M
WSUM
AD
C
EXT_PULS
E
CE_BUS
Y
XFER_BUSY
Mux
Ctrl
DATA
APULSEW
APULSE
R
SAG CONTROL
I/O RAM (CONFIGURATION RAM)