EFM32G200F64 Energy Micro, EFM32G200F64 Datasheet - Page 52

• Manufacturer Part Number: EFM32G200F64
• Description: MCU 32BIT 64KB FLASH 32-QFN
• Manufacturer: Energy Micro
• Series: Geckor

Specifications of EFM32G200F64

• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 32MHz
• Connectivity: EBI/EMI, I²C, IrDA, SmartCard, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.8 V
• Data Converters: A/D 4x12b, D/A 1x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-VQFN Exposed Pad
• Processor Series: EFM32G200
• Core: ARM Cortex-M3
• Data Bus Width: 32 bit
• Data Ram Size: 16 KB
• Interface Type: I2C, UART
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 24
• Number Of Timers: 2
• Operating Supply Voltage: 1.8 V to 3.8 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

8.4.3.1 Source data end pointer
2010-09-06 - d0001_Rev1.00
Figure 8.7. Detailed memory map for the 8 channels, including the alternate data structure
The controller uses the system memory to enable it to access two pointers and the control information
that it requires for each channel. The following subsections will describe these 32-bit memory locations
and how the controller calculates the DMA transfer address.
The src_data_end_ptr memory location contains a pointer to the end address of the source data.
Figure 8.7 (p. 52) lists the bit assignments for this memory location.
Table 8.7. src_data_end_ptr bit assignments
Before the controller can perform a DMA transfer, you must program this memory location with the end
address of the source data. The controller reads this memory location when it starts a 2
Note
Alternate for
Alternate for
Alternate for
Bit
[31:0]
channel 7
channel 1
channel 0
Prim ary for
Prim ary for
Prim ary for
channel 7
channel 1
channel 0
Name
src_data_end_ptr
The controller does not write to this memory location.
Destination End Pointer
Destination End Pointer
Destination End Pointer
Destination End Pointer
Destination End Pointer
Destination End Pointer
Source End Pointer
Source End Pointer
Source End Pointer
Source End Pointer
Source End Pointer
Source End Pointer
Description
Pointer to the end address of the source data
Unused
Unused
Unused
Unused
Unused
Unused
Control
Control
Control
Control
Control
Control
0x0FC
0x0F8
0x0F4
0x0F0
0x09C
0x098
0x094
0x090
0x08C
0x088
0x084
0x080
0x07C
0x078
0x074
0x070
0x01C
0x018
0x014
0x010
0x00C
0x008
0x004
0x000
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52
Alternate
structure
structure
Prim ary
data
data
www.energymicro.com
R
DMA transfer.