參數(shù)資料
型號(hào): MC68HC05X4CDW
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.2 MHz, MICROCONTROLLER, PDSO28
封裝: PLASTIC, SOIC-28
文件頁數(shù): 138/156頁
文件大?。?/td> 3699K
代理商: MC68HC05X4CDW
Motorola CAN
MC68HC05X4
Motorola CAN
MCAN status
register (CSTAT)
This is a read only register; only the MCAN can change its contents.
BS — Bus status
This bit is set (off-bus) by the MCAN when the transmit error counter
reaches 256. The MCAN will then set RR and will remain off-bus until
the CPU clears RR again. At this point the MCAN will wait for 128
successive occurrences of a sequence of 11 recessive bits before
clearing BS and resetting the read and write error counters. While
off-bus the MCAN does not take part in bus activities.
1 = Off-bus – The MCAN is not participating in bus activities.
0 = On-bus – The MCAN is operating normally.
ES — Error status
1 = Error – Either the read or the write error counter has reached
the CPU warning limit of 96.
0 = Neither of the error counters has reached 96.
TS — Transmit status
1 = Transmit – The MCAN has started to transmit a message.
0 = Idle – If the receive status bit is also clear then the MCAN is
idle; otherwise it is in receive mode.
RS — Receive status
1 = Receive – The MCAN entered receive mode from idle, or by
losing arbitration during transmission.
0 = Idle – If the transmit status bit is also clear then the MCAN is
idle; otherwise it is in transmit mode.
NOTE:
RS will not be set during a bus failure with a permanent dominant bus
level.
Address:
$0022
Bit 7
654321
Bit 0
BS
ES
TS
RS
TCS
TBA
DO
RBS
External Reset:
00001100
Reset: with RR bit set
uu001100
Figure 6. MCAN Status Register (CSTAT)
14-mcan
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
相關(guān)PDF資料
PDF描述
MC68HC705X4DW 8-BIT, OTPROM, 2.2 MHz, MICROCONTROLLER, PDSO28
MC68HC708KL8FB 8-BIT, OTPROM, 1.5 MHz, MICROCONTROLLER, PQFP52
MC68HC708MP16VFU 8-BIT, OTPROM, 8.2 MHz, MICROCONTROLLER, PQFP64
MC68HC711D3MFN3 8-BIT, OTPROM, 3 MHz, MICROCONTROLLER, PQCC44
MCC68HC711D3 8-BIT, OTPROM, 3 MHz, MICROCONTROLLER, UUC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC05X4DW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC08AB16A 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC08AB16AD 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC08AZ0 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Advance Information
MC68HC08AZ0CFU 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Advance Information