DSPIC30F3013-20I/ML Microchip Technology, DSPIC30F3013-20I/ML Datasheet - Page 45

• Manufacturer Part Number: DSPIC30F3013-20I/ML
• Description: IC,DSP,16-BIT,CMOS,LLCC,44PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: dsPIC™ 30Fr

Specifications of DSPIC30F3013-20I/ML

• Rohs Compliant: YES
• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 20 MIPS
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 20
• 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 10x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-QFN
• Package: 44QFN EP
• Device Core: dsPIC
• Family Name: dsPIC30
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 16 Bit
• Number Of Programmable I/os: 30
• Interface Type: I2C/SPI/UART
• On-chip Adc: 10-chx12-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DV164033 - KIT START EXPLORER 16 MPLAB ICD2DM240001 - BOARD DEMO PIC24/DSPIC33/PIC32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: DSPIC30F301320IML

4.2.1
The Modulo Addressing scheme requires that a
starting and an ending address be specified and loaded
into the 16-bit
XMODSRT, XMODEND, YMODSRT and YMODEND
(see
The length of a circular buffer is not directly specified. It
is
corresponding Start and end addresses. The maximum
possible length of the circular buffer is 32K words
(64 Kbytes).
FIGURE 4-1:
© 2010 Microchip Technology Inc.
Note:
determined
Table
Byte
Address
0x1100
0x1163
3-3).
START AND END ADDRESS
Y
calculations assume word-sized data
(LSb of every EA is always clear).
Start Addr = 0x1100
End Addr = 0x1163
Length = 0x0032 words
Modulo
space
by
the
MODULO ADDRESSING OPERATION EXAMPLE
Modulo
Buffer
difference
Address
Addressing
dsPIC30F2011/2012/3012/3013
between
registers:
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
DO
MOV
AGAIN: INC
EA
the
#0x1100,W0
W0,XMODSRT
#0x1163,W0
W0,MODEND
#0x8001,W0
W0,MODCON
#0x0000,W0
#0x1110,W1
AGAIN,#0x31
W0,[W1++]
W0,W0
4.2.2
The Modulo and Bit-Reversed Addressing Control
register, MODCON<15:0>, contains enable flags as
well as a W register field to specify the W address
registers. The XWM and YWM fields select which
registers
If XWM = 15, X RAGU and X WAGU Modulo
Addressing is disabled. Similarly, if YWM = 15, Y AGU
Modulo Addressing is disabled.
The X Address Space Pointer W register (XWM), to
which Modulo Addressing is to be applied, is stored in
MODCON<3:0> (see
enabled for X data space when XWM is set to any value
other than ‘15’ and the XMODEN bit is set at
MODCON<15>.
The Y Address Space Pointer W register (YWM), to
which Modulo Addressing is to be applied, is stored in
MODCON<7:4>. Modulo Addressing is enabled for Y
data space when YWM is set to any value other
than ‘15’
MODCON<14>.
;set modulo start address
;set modulo end address
;enable W1, X AGU for modulo
;W0 holds buffer fill value
;point W1 to buffer
;fill the 50 buffer locations
;fill the next location
;increment the fill value
and
W ADDRESS REGISTER
SELECTION
operate
the
Table
with
YMODEN
3-3). Modulo Addressing is
Modulo
DS70139G-page 45
bit
is
Addressing.
set
at