ST92250CV2Q-Auto STMicroelectronics, ST92250CV2Q-Auto Datasheet - Page 351
ST92250CV2Q-Auto
Manufacturer Part Number
ST92250CV2Q-Auto
Description
8-bit MCU for automotive
Manufacturer
STMicroelectronics
Datasheet
1.ST92150JDV1QAUTO.pdf
(430 pages)
Specifications of ST92250CV2Q-Auto
Internal Memory
Single Voltage FLASH up to 256 Kbytes, RAM up to 8Kbytes, 1K byte E3 TM (Emulated EEPROM)
Minimum Instruction Time
83 ns (24 MHz int. clock)
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CONTROLLER AREA NETWORK (Cont’d)
MAILBOX FILTER MATCH INDEX (MFMI)
This register is read only.
Reset Value: 0000 0000 (00h)
Bit 7:0 = FMI[7:0] Filter Match Index
This register contains the index of the filter the
message stored in the mailbox passed through.
For more details on identifier filtering please refer
to
graph.
Note: This register is implemented only in receive
mailboxes. In transmit mailboxes, the MCSR reg-
ister is mapped at this location.
MAILBOX IDENTIFIER REGISTERS
(MIDR[3:0])
Read / Write
Reset Value: xxxx xxxx (xxh)
MIDR0
Bit 7 = Reserved. Forced to 0 by hardware.
Bit 6 = IDE Extended Identifier
This bit defines the identifier type of message in
the mailbox.
0: Standard identifier.
1: Extended identifier.
Bit 5 = RTR Remote Transmission Request
0: Data frame
1: Remote frame
Bit 4:0 = STID[10:6] Standard Identifier
5 most significant bits of the standard part of the
identifier.
FMI7
7
7
0
Section 10.10.5.4
FMI6
IDE
FMI5
RTR
STID10
FMI4
- Filter Match Index para-
STID9
FMI3
STID8
FMI2
STID7
FMI1
STID6
FMI0
0
0
ST92124xxx-Auto/150xxxxx-Auto/250xxxx-Auto
MIDR1
Bit 7:2 = STID[5:0] Standard Identifier
6 least significant bits of the standard part of the
identifier.
Bit 1:0 = EXID[17:16] Extended Identifier
2 most significant bits of the extended part of the
identifier.
MIDR2
Bit 7:0 = EXID[15:8] Extended Identifier
Bit 15 to 8 of the extended part of the identifier.
MIDR3
Bit 7:1 = EXID[6:0] Extended Identifier
6 least significant bits of the extended part of the
identifier.
EXID15 EXID14 EXID13 EXID12 EXID11 EXID10
STID5
EXID7
7
7
7
STID4
EXID6
STID3
EXID5
STID2
EXID4
STID1
EXID3
STID0
EXID2
EXID17 EXID16
EXID9
EXID1
351/430
EXID8
EXID0
0
0
0
9
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