EM250-DEV Ember, EM250-DEV Datasheet - Page 39
![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: 39 of 117
- Download datasheet (2Mb)
5.2
Serial Controller SC1
The EM250 SC1 module provides asynchronous (UART) or synchronous (SPI or I
6 is a block diagram of the SC1 module.
The full-duplex interface of the SC1 module can be configured into one of these three communication modes,
but it cannot run them simultaneously. To reduce the interrupt service requirements of the CPU, the SC1
module contains buffered data management schemes for the three modes. A dedicated, buffered DMA control-
ler is available to the SPI and UART controllers while a FIFO is available to all three modes. In addition, a SC1
data register allows the software application direct access to the SC1 data within all three modes. Finally, the
SC1 routes the interface signals to GPIO pins. These are shared with other functions and are controlled by the
GPIO_CFG
SC1 RX DMA
SC1 TX DMA
CPU Interrupt
channel
channel
SC1_MODE
register. For selecting alternate pin functions, refer to Table 17 and Table 18.
SC1_DATA
SC1_DMACTRL
SC1_DMASTAT
Controller
DMA
0
1
2
3
UART
SPI
I2C
OFF
SC1_RXCNTA/B
Figure 6. SC1 Block Diagram
SC1_UARTPER/FRAC
RX-FIFO
TX-FIFO
SC1_TX/RXBEGA/B
SC1_TX/RXENDA/B
SC1_RATELIN/EXP
SC1_UARTSTAT
SC1_RXERRA/B
SC1_UARTCFG
SC1_I2CCTRL1
SC1_I2CCTRL2
INT_SC1FLAG
SC1_SPISTAT
SC1_I2CSTAT
INT_SC1CFG
SC1_SPICFG
INT_FLAG[5]
INT_CFG[5]
INT_EN
SC1_TXCNT
2
C) serial communications. Figure
UART Controller
Clock Generator
Baud Generator
SPI Master
I2C Master
Controller
Controller
120-0082-000I
EM250
TXD
RXD
nRTS
nCTS
MCLK
MO
MI
MSCL
MSDA
39
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