EM250-DEV Ember, EM250-DEV Datasheet - Page 60
![KIT DEV FOR EM250](/photos/14/10/141065/em250-jmp_sml.jpg)
EM250-DEV
Manufacturer Part Number
EM250-DEV
Description
KIT DEV FOR EM250
Manufacturer
Ember
Series
InSightr
Type
802.15.4/Zigbeer
Specifications of EM250-DEV
Frequency
2.4GHz
For Use With/related Products
EM250
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
636-1002
- Current page: 60 of 117
- Download datasheet (2Mb)
EM250
5.3
60
Serial Controller SC2
120-0082-000I
CPU Interrupt
The EM250 SC2 module provides synchronous (SPI or I
the SC2 module.
The full-duplex interface of the SC2 module can be configured into one of these two communication modes,
but it cannot run them simultaneously. To reduce the interrupt service requirements of the CPU, the SC2
module contains buffered data management schemes. A dedicated, buffered DMA controller is available to the
SPI while a FIFO is available to both modes. In addition, a SC2 data register allows the software application di-
rect access to the SC2 data. Finally, the SC2 routes the interface signals to GPIO pins. These are shared with
other functions and are controlled by the
Table 17 and Table 18.
SC2 RX DMA
SC2 TX DMA
channel
channel
SC2_MODE
SC2_DATA
SC2_DMACTRL
SC2_DMASTAT
Controller
DMA
0
1
2
3
SPI
I2C
OFF
Reserved
SC2_RXCNTA/B
Figure 8. SC2 Block Diagram
GPIO_CFG
RX-FIFO
TX-FIFO
SC2_TX/RXBEGA/B
SC2_TX/RXENDA/B
SC2_RATELIN/EXP
SC2_RXERRA/B
SC2_I2CCTRL1
SC2_I2CCTRL2
INT_SC2FLAG
SC2_SPISTAT
SC2_I2CSTAT
INT_SC2CFG
SC2_SPICFG
INT_FLAG[6]
INT_CFG[6]
INT_EN
register. For selecting alternate pin-functions, refer to
2
C) serial communications. Figure 8 is a block diagram of
SC2_TXCNT
Clock Generator
Slave Controller
SPI Master
I2C Master
Controller
Controller
SPI
MSCLK
MOSI
MISO
nSSEL
SCL
SDA
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