CM-BF537 Datasheet, PDF (11/33 Pages) List of Unclassifed Manufacturers – Bluetechnix Mechatronische Systeme GmbH

2 General Description
2.1 Functional Description
Mem. Control, Boot Mode, JTAG, Ethernet
Ethernet
Physical
Dynamic
Core Voltage
Control
Low Voltage
Reset
Clock
16 Bit Data Bus
ADSP
BF537
up to
600MHz
Up to
64MByte
SDRam
4MByte
Flash
20 Bit Address Bus
Clock-out PPI, SPORT0, UART1, UART2, SPI, TWI, CAN, GPIO
Figure 2-1: Detailed block diagram
Figure 2-1 shows a detailed block diagram of the CM-BF537. Other than the SDRAM control pins the CM-BF537 has
all other pins of the Blackfin processor on its two main 60 pin connectors.
A special feature of the Core Module CM-BF537 is the on-board physical Ethernet transceiver from Micrel
(KSZ8041NLI).
Dynamic voltage control allows reducing power consumption to a minimum adjusting the core voltage and the
clock frequency dynamically in accordance to the required processing power. A low voltage reset circuit guarantees
a power on reset and resets the system when the input voltage drops below 2.93V.
2.2 Boot Mode
By default the boot mode = 000 (BMODE2 = low, BMODE1 = low, BMODE0 = low). All BMODE pins have internal pull
down resistors.
Connect BMODE0 to Vcc and leave BMODE1, BMODE2 pins open for boot mode 001 equals to 8 or 16 bit
PROM/FLASH boot mode, this is the default boot mode of BLACKSheep® OS. See Blackfin Datasheets or
Eval/DevBoard manuals for more details.
CM-BF537_HUM_V3.2.docx
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