Becom CM-BF527, Руководство пользователя по оборудованию

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© BECOM Systems 2020
Hardware User Manual - CM-BF527
Last change: 26. March 2019/Version 7
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2 General Description
2.1 Functional Description
32/64*
MByte
SDRam
8 MByte
Flash
BF527
up to
600MHz
Dynamic
Core Voltage
Control
Low Voltage
Reset
20 Bit Address Bus
16 Bit Data Bus
Ethernet
Physical
Clock
Mem. Control, Ethernet, USB2.0 OTG
D
a
ta
&
A
d
d
re
s
s
B
u
s
Clock-out Boot Mode, JTAG, PPI, SPORT, UART, SPI, TWI,
GPIO
3
V
3
P
o
w
e
r
,
R
e
s
e
t
Figure 2-1: Detailed block diagram
*Version dependent (see chapter 8.1)
Figure 2-1 shows a detailed block diagram of the CM-BF527 module. Besides the SDRAM control pins and the pins
used by the Ethernet physical transceiver (port H) the CM-BF527 has all other pins of the Blackfin processor on its
two main 60 pin connectors.
A special feature of the CM-BF527 Core Module is the on-board physical Ethernet transceiver from Microchip
(KSZ8041).
Dynamic voltage control allows reduction of 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 = 0000 (BMODE3 = low, BMODE2 = low, BMODE1 = low, BMODE0 = low). All BMODE
pins have internal pull-down resistors.