st92f120 STMicroelectronics, st92f120 Datasheet - Page 255
st92f120
Manufacturer Part Number
st92f120
Description
8/16-bit Flash Mcu Family With Ram, Eeprom And J1850 Blpd
Manufacturer
STMicroelectronics
Datasheet
1.ST92F120.pdf
(324 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
st92f120JV9Q7
Manufacturer:
ST
Quantity:
3 478
Company:
Part Number:
st92f120V1Q7
Manufacturer:
ST
Quantity:
6 765
Part Number:
st92f120V1Q7
Manufacturer:
ST
Quantity:
20 000
Part Number:
st92f120V1Q7C
Manufacturer:
ST
Quantity:
20 000
Company:
Part Number:
st92f120V1Q7DTR
Manufacturer:
MAXIM
Quantity:
2 854
Company:
Part Number:
st92f120V9Q7
Manufacturer:
TEXAS
Quantity:
2 500
Part Number:
st92f120V9Q7
Manufacturer:
ST
Quantity:
20 000
Company:
Part Number:
st92f120V9Q7C
Manufacturer:
ST
Quantity:
101
- Current page: 255 of 324
- Download datasheet (5Mb)
J1850 BYTE LEVEL PROTOCOL DECODER (Cont’d)
10.8.6.3 DMA Management in Reception Mode
The DMA in reception is performed when the
RDRF bit of the STATUS register is set (by hard-
ware). The RDRF bit is reset as soon as the DMA
cycle is finished.
To enable the DMA feature, the RXD_M bit of the
IMR register must be set (by software).
Each DMA request performs the transfer of a sin-
gle byte from the RXDATA register of the peripher-
al toward Register File or Memory Space
10).
Each DMA transfer consists of three operations
that are performed with minimum use of CPU time:
– A load from the JBLPD data register (RXDATA)
Figure 118. DMA in Reception Mode
to a location of Register File/Memory addressed
JBLPD peripheral
RXDATA
(Figure
J1850 Byte Level Protocol Decoder (JBLPD)
– A post-increment of the DMA Address Register
– A post-decrement of the DMA transaction coun-
Note: When the REOBP pending bit is set (at the
end of the last DMA transfer), the reception DMA
enable bit (RXD_M) is automatically reset by hard-
ware. However, the DMA can be disabled by soft-
ware resetting the RXD_M bit.
Note: The DMA request acknowledge could de-
pend on the priority level stored in the PRLR regis-
ter.
through the DMA Address Register (or Register
pair);
(or Register pair);
ter, which contains the number of transactions
that have still to be performed.
Data received
Previous data
Memory space
Register File
Current
Address
Pointer
or
255/324
9
Related parts for st92f120
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
STMicroelectronics [RIPPLE-CARRY BINARY COUNTER/DIVIDERS]
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
STMicroelectronics [LIQUID-CRYSTAL DISPLAY DRIVERS]
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
BOARD EVAL FOR MEMS SENSORS
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
NPN TRANSISTOR POWER MODULE
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
TURBOSWITCH ULTRA-FAST HIGH VOLTAGE DIODE
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
DIODE / SCR MODULE
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
DIODE / SCR MODULE
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
Search -----> STE16N100
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
Search ---> STE53NA50
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
NPN Transistor Power Module
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
DIODE / SCR MODULE
Manufacturer:
STMicroelectronics
Datasheet: