DSPIC30F3014-30I/ML Microchip Technology, DSPIC30F3014-30I/ML Datasheet - Page 40
![IC DSPIC MCU/DSP 24K 44QFN](/photos/6/81/68122/150-44-qfn_sml.jpg)
DSPIC30F3014-30I/ML
Manufacturer Part Number
DSPIC30F3014-30I/ML
Description
IC DSPIC MCU/DSP 24K 44QFN
Manufacturer
Microchip Technology
Series
dsPIC™ 30Fr
Datasheets
1.DSPIC30F3014-30IPT.pdf
(228 pages)
2.DSPIC30F3014-30IPT.pdf
(16 pages)
3.DSPIC30F3014-30IPT.pdf
(6 pages)
4.DSPIC30F3014-30IPT.pdf
(14 pages)
5.DSPIC30F3014-30IPT.pdf
(20 pages)
Specifications of DSPIC30F3014-30I/ML
Core Processor
dsPIC
Core Size
16-Bit
Speed
30 MIPs
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
30
Program Memory Size
24KB (8K x 24)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.5 V ~ 5.5 V
Data Converters
A/D 13x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-QFN
For Use With
XLT44QFN2 - SOCKET TRAN ICE 44QFN/40DIPAC164322 - MODULE SOCKET MPLAB PM3 28/44QFNDV164005 - KIT ICD2 SIMPLE SUIT W/USB CABLE
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
DSPIC30F301430IML
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DSPIC30F3014-30I/ML
Manufacturer:
Microchip Technology
Quantity:
135
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dsPIC30F3014/4013
4.2.3
Modulo Addressing can be applied to the Effective
Address (EA) calculation associated with any W
register. It is important to realize that the address
boundaries check for addresses less than or greater
than the upper (for incrementing buffers) and lower (for
decrementing buffers) boundary addresses (not just
equal to). Address changes may, therefore, jump
beyond boundaries and still be adjusted correctly.
4.3
Bit-Reversed Addressing is intended to simplify data
re-ordering for radix-2 FFT algorithms. It is supported
by the X AGU for data writes only.
The modifier, which may be a constant value or register
contents, is regarded as having its bit order reversed. The
address source and destination are kept in normal order.
Thus, the only operand requiring reversal is the modifier.
4.3.1
Bit-Reversed Addressing is enabled when:
1.
2.
3.
FIGURE 4-2:
DS70138G-page 40
Note:
b15 b14 b13 b12
b15 b14 b13 b12
BWM (W register selection) in the MODCON
register is any value other than ‘15’ (the stack
cannot
Addressing) and
the BREN bit is set in the XBREV register and
the addressing mode used is Register Indirect
with Pre-Increment or Post-Increment.
Bit-Reversed Addressing
MODULO ADDRESSING
APPLICABILITY
The modulo corrected effective address is
written back to the register only when Pre-
Modify or Post-Modify Addressing mode is
used to compute the effective address.
When an address offset (e.g., [W7+W2])
is used, Modulo Addressing correction is
performed but the contents of the register
remain unchanged.
BIT-REVERSED ADDRESSING
IMPLEMENTATION
be
accessed
b11 b10 b9 b8
BIT-REVERSED ADDRESS EXAMPLE
b11 b10 b9 b8
using
Bit-Reversed
b7 b6 b5 b4
b7 b6 b5 b1
Pivot Point
b3 b2 b1
b2 b3 b4
Sequential Address
Bit-Reversed Address
If the length of a bit-reversed buffer is M = 2
then the last ‘N’ bits of the data buffer start address
must be zeros.
XB<14:0> is the bit-reversed address modifier or ‘pivot
point’ which is typically a constant. In the case of an
FFT computation, its value is equal to half of the FFT
data buffer size.
When enabled, Bit-Reversed Addressing is only
executed for Register Indirect with Pre-Increment or
Post-Increment Addressing and word-sized data
writes. It does not function for any other addressing
mode or for byte sized data. Normal addresses are
generated instead. When Bit-Reversed Addressing is
active, the W Address Pointer is always added to the
address modifier (XB) and the offset associated with
the Register Indirect Addressing mode is ignored. In
addition, as word-sized data is a requirement, the LSb
of the EA is ignored (and always clear).
If Bit-Reversed Addressing has already been enabled
by setting the BREN (XBREV<15>) bit, then a write to
the XBREV register should not be immediately followed
by an indirect read operation using the W register that
has been designated as the Bit-Reversed Pointer.
Note:
Note:
XB = 0x0008 for a 16-word Bit-Reversed Buffer
0
0
All bit-reversed EA calculations assume
word-sized data (LSb of every EA is
always clear). The XB value is scaled
accordingly to generate compatible (byte)
addresses.
Modulo Addressing and Bit-Reversed
Addressing
together. In the event that the user
attempts to do this, Bit-Reversed Address-
ing assumes priority when active for the X
WAGU, and X WAGU Modulo Addressing
is disabled. However, Modulo Addressing
continues to function in the X RAGU.
Bit Locations Swapped Left-to-Right
Around Center of Binary Value
2010 Microchip Technology Inc.
should
not
be
enabled
N
bytes,
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