参数资料
型号: 71M6531D-IM/F
厂商: TERIDIAN SEMICONDUCTOR CORP
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC68
封装: LEAD FREE, QFN-68
文件页数: 80/120页
文件大小: 2477K
代理商: 71M6531D-IM/F
Data Sheet 71M6531D/F-71M6532D/F
FDS 6531/6532 005
62
2005-2010 TERIDIAN Semiconductor Corporation
v1.3
Figure 26: MPU/CE Data Flow
2.7
CE/MPU Communication
Figure 27 shows the functional relationships between the CE and the MPU. The CE is controlled by the
MPU via shared registers in the I/O RAM and in RAM.
The CE outputs two interrupt signals to the MPU: CE_BUSY and XFER_BUSY, which are connected to
the MPU interrupt service inputs as external interrupts. CE_BUSY indicates that the CE is actively
processing data. This signal will occur once every multiplexer cycle. XFER_BUSY indicates that the CE
is updating data to the output region of the RAM. This will occur whenever the CE has finished generating
a sum by completing an accumulation interval determined by SUM_CYCLES[5:0] * PRE_SAMPS[1:0] samples.
Interrupts to the MPU occur on the falling edges of the XFER_BUSY and CE_BUSY signals.
Refer to Section 4.3 CE Interface Description for additional information on setting up the device using the
MPU firmware.
VARSUM
WSUM
APULSEW
APULSER
EXT PULSE
SAG CONTROL
DATA
DIO
XFER BUSY
SAMPLES
CE
MPU
INTERRUPTS
I/O RAM (Configuration RAM)
Mux Control
ADC
DISPLAY (Memory
mapped LCD
segments)
SERIAL
(UART0/1)
EEPROM
(I
2C)
VAR
(DIO7)
PULSES
W (DIO6)
CE BUSY
Figure 27: MPU/CE Communication
CE
MPU
Pre-
Processor
Post-
Processor
IRQ
Processed
Metering
Data
Pulses
I/O RAM (Configuration RAM)
Samples
Data
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