DSPIC30F5011-20I/PTG Microchip Technology, DSPIC30F5011-20I/PTG Datasheet - Page 127

• Manufacturer Part Number: DSPIC30F5011-20I/PTG
• Description: IC, DSC, 16BIT, 66KB, 40MHZ 5.5V TQFP-64
• Manufacturer: Microchip Technology
• Series: DsPIC30Fr

Specifications of DSPIC30F5011-20I/PTG

• Core Frequency: 40MHz
• Core Supply Voltage: 5.5V
• Embedded Interface Type: CAN, I2C, SPI, UART
• No. Of I/o's: 52
• Flash Memory Size: 66KB
• Supply Voltage Range: 2.5V To 5.5V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

18.6.2
The 20-bit AC-Link mode allows all bits in the data time
slots to be transmitted and received but does not main-
tain data alignment in the TXBUF and RXBUF
registers.
The 20-bit AC-Link mode functions similar to the
Multi-Channel mode of the DCI module, except for the
duty cycle of the frame synchronization signal. The
AC-Link frame synchronization signal should remain
high for 16 CSCK cycles and should be low for the
following 240 cycles.
The 20-bit mode treats each 256-bit AC-Link frame as
sixteen, 16-bit time slots. In the 20-bit AC-Link mode,
the module operates as if COFSG<3:0> = 1111 and
WS<3:0> = 1111. The data alignment for 20-bit data
slots is ignored. For example, an entire AC-Link data
frame can be transmitted and received in a packed
fashion by setting all bits in the TSCON and RSCON
SFRs. Since the total available buffer length is 64 bits,
it would take 4 consecutive interrupts to transfer the
AC-Link frame. The application software must keep
track of the current AC-Link frame segment.
© 2008 Microchip Technology Inc.
20-BIT AC-LINK MODE
18.7
The DCI module is configured for I
a value of ‘01’ to the COFSM<1:0> control bits in the
DCICON1 SFR. When operating in the I
DCI module will generate frame synchronization
signals with a 50% duty cycle. Each edge of the frame
synchronization signal marks the boundary of a new
data word transfer.
The user must also select the frame length and data
word size using the COFSG and WS control bits in the
DCICON2 SFR.
18.7.1
The WS and COFSG control bits are set to produce the
period for one half of an I
frame length is the total number of CSCK cycles
required for a left or a right data word transfer.
The BLEN bits must be set for the desired buffer length.
Setting BLEN<1:0> = 01 will produce a CPU interrupt,
once per I
18.7.2
As per the I
default, begin one CSCK cycle after a transition of the
WS signal. A ‘MSb left justified’ option can be selected
using the DJST control bit in the DCICON1 SFR.
If DJST = 1, the I
justified. The MSb of the data word will be presented on
the CSDO pin during the same CSCK cycle as the
rising or falling edge of the COFS signal. The CSDO
pin is tri-stated after the data word has been sent.
dsPIC30F5011/5013
I
2
2
S Mode Operation
S frame.
2
I
LENGTH SELECTION
I
S specification, a data word transfer will, by
2
2
S FRAME AND DATA WORD
S DATA JUSTIFICATION
2
S data transfers will be MSb left
2
S data frame. That is, the
2
DS70116H-page 127
S mode by writing
2
S mode, the