MCF5253VM140J Freescale Semiconductor, MCF5253VM140J Datasheet - Page 323
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MCF5253VM140J
Manufacturer Part Number
MCF5253VM140J
Description
IC MCU 2.1MIPS 140MHZ 225MAPBGA
Manufacturer
Freescale Semiconductor
Series
MCF525xr
Datasheets
1.MCF5253VM140J.pdf
(34 pages)
2.MCF5253VM140J.pdf
(8 pages)
3.MCF5253VM140J.pdf
(648 pages)
4.MCF5253VM140J.pdf
(2 pages)
Specifications of MCF5253VM140J
Core Processor
Coldfire V2
Core Size
32-Bit
Speed
140MHz
Connectivity
CAN, EBI/EMI, I²C, QSPI, UART/USART, USB OTG
Peripherals
DMA, WDT
Program Memory Type
ROMless
Ram Size
128K x 8
Voltage - Supply (vcc/vdd)
1.08 V ~ 1.32 V
Data Converters
A/D 6x12b
Oscillator Type
External
Operating Temperature
-20°C ~ 70°C
Package / Case
225-MAPBGA
Processor Series
MCF525x
Core
ColdFire V2
3rd Party Development Tools
JLINK-CF-BDM26, EWCF
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of I /o
-
Eeprom Size
-
Program Memory Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCF5253VM140J
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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RCK is the incoming clock from the channel encoder. SFSY is used to flag the first symbol bit, and first
packet symbol. During the first bit of every symbol, SFSY is low, During the first two bits of the first
symbol of every packet, SFSY is low.
SUBR is the data out, used to transmit outgoing data in serial form. The most significant bit is transmitted
first.
RCK is an input, SFSY and SUBR are outputs.
CD User channel subcode is transmitted out of the 3-wire CD subcode interface. This user channel subcode
needs to be assembled by the ColdFire processor application software.
The CD-Subcode format has a 98-symbol packet structure. Of these 98 packets, the first 2 symbols are
sync symbols, followed by 96 8-bit data symbols.
The boundaries of the 98-symbol packets are determined by free-run counters. The first symbol of any
packet is transmitted with the special sync sequence on SFSY. The first and second symbols are all-0
symbols. The other 96 symbols need to be uploaded by the application software in register
UChannelTransmit.
Upload is done by application software handshaking to interrupt UChannelTxEmpty. If this interrupt is set,
the application software uploads 4 symbols of the current user channel packets into register UChannelTx.
The interrupt UChannelTxNextFirstByte flags the start of a new U-channel packet. It is always coincident
with UChannelTxEmpty, and signal that the first 4 symbols of a new packet need to be loaded into
UChannelTx.
The following pseudo-code reacts on both interrupts. One interrupt handler can take care of both
UchannelTxEmpty and UChannelTxNextFirstByte. This last interrupt is not enabled.
if(UChannelTxEmpty interrupt) then
end if ;
Freescale Semiconductor
if(UChannelTxNextFirstByt interrupt set also) then
end if ;
load UChannelTransmit with data from pointer
update pointer
reset interrupt
•
reset this interrupt
synchronize pointer to sent out new frame
RCK
(MCF5253 in)
SFSY
(MCF5253 out)
SUBR
(MCF5253 out)
UChannelTxNextFirstByte—Received indication from CD-Subcode output interface that next
word to be written contains first byte of the 96-byte U-channel frame.CD Subcode Interface: SFSY,
RCK and SUBR.
Figure 17-14. Data Format on CD-Subcode Interface Out
MCF5253 Reference Manual, Rev. 1
Audio Interface Module (AIM)
17-25
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