参数资料
型号: MC33912BACR2
厂商: Freescale Semiconductor
文件页数: 83/95页
文件大小: 0K
描述: IC SYSTEM BASIS CHIP 32LQFP
标准包装: 2,000
应用: 系统基础芯片
电流 - 电源: 4.5mA
电源电压: 5.5 V ~ 27 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 32-LQFP
供应商设备封装: 32-LQFP(7x7)
包装: 带卷 (TR)
MC33912BAC / MC34912BAC
FUNCTIONAL DEVICE OPERATIONS
LOGIC COMMANDS AND REGISTERS
REGISTER DEFINITIONS
System Status Register - SYSSR
The System Status Register (SYSSR) is always transferred
with every SPI transmission and gives a quick system status
overview. It summarizes the status of the Voltage Status
Register (VSR), LIN Status Register (LINSR), High Side
HS1CL
HS1OP
HS2CL
HS2OP
HSS
Status Register (HSSR), and the Low Side Status Register
Figure 46. High Side Status
(LSSR).
LSS - Low Side Switch Status
Table 40. System Status Register
This read-only bit indicates that one or more bits in the LSSR
are set.
S7
S6
S5
S4
1 = Low Side Status bit set
Read
VMS
LINS
HSS
LSS
0 = None
VMS - Voltage Monitor Status
This read-only bit indicates that one or more bits in the VSR
LS1CL
are set.
1 = Voltage Monitor bit set
0 = None
LS1OP
LS2CL
LS2OP
LSS
Figure 47. Low Side Status
BATFAIL
VDDOT
VSUV
VSOV
VMS
Mode Control Register - MCR
The Mode Control Register (MCR) allows switching between
the operation modes and to configure the 33912. Writing the
MCR will return the VSR.
Figure 44. Voltage Monitor Status
Table 41. Mode Control Register - $0
LINS - LIN Status
C3
C2
C1
C0
This read-only bit indicates that one or more bits in the LINSR
are set.
1 = LIN Status bit set
0 = None
Write
Reset
Value
Reset
Condition
HVSE
1
POR
LINPE
1
POR
MOD2
-
-
MOD1
-
-
LINOC
HVSE - High-voltage Shutdown Enable
LINOT
TXDOM
RXSHORT
LINS
This write-only bit enables/disables automatic shutdown of
the high side and the low side drivers during a high-voltage
VSOV condition.
1 = automatic shutdown enabled
Figure 45. LIN Status
HSS - High Side Switch Status
This read-only bit indicates that one or more bits in the HSSR
are set.
1 = High Side Status bit set
0 = None
0 = automatic shutdown disabled
LINPE - LIN pull-up enable.
This write-only bit enables/disables the 30 k ?? LIN pull-up
resistor in STOP and SLEEP modes. This bit also controls
the LIN bus wake-up threshold.
1 = LIN pull-up resistor enabled
0 = LIN pull-up resistor disabled
33912
Analog Integrated Circuit Device Data ?
Freescale Semiconductor
83
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