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HI-3111PCT 参数 Datasheet PDF下载

HI-3111PCT图片预览
型号: HI-3111PCT
PDF下载: 下载PDF文件 查看货源
内容描述: 航空电子与CAN收发器集成控制器 [Avionics CAN Controller with Integrated Transceiver]
分类和应用: 电子控制器航空
文件页数/大小: 53 页 / 178 K
品牌: HOLTIC [ HOLT INTEGRATED CIRCUITS ]
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HI-3110  
BIT TIMING REGISTER 0: BTR0  
SJW0BRP5  
BRP1BRP0  
(Write, SPI Op-code 0x18)  
(Read, SPI Op-code 0xD6)  
7
6
5
4
3
2
1
0
LSB  
MSB  
BTR0 defines the value of the Re-synchronization Jump Width (SJW) and the Baud Rate Prescaler (BRP). This register can be read  
anytime and written only in init mode (MODE<2:0> bits set to <1xx> in the CTRL0 register).  
Bit Name  
R/W Default Description  
7-6 SJW1:0  
R/W  
0
Re-synchronization Jump Width bits <1:0>.  
These bits are used to compensate for phase shifts between different clock oscillators on the  
bus. They define the maximum number of time quanta (Tq) a bit can be shortened or  
lengthened to allow a node achieve re-synchronization to the edge of an incoming signal.  
Note that one time quantum (Tq) is the single unit of time within a bit time (see BitTiming  
section).  
SJW bits <1:0>  
00: SJW = 1Tq  
01: SJW = 2Tq  
10: SJW = 3Tq  
11: SJW = 4Tq  
Note:ARINC 825 states that the Re-synchronization Jump Width shall be 1Tq  
5-0 BRP5:0  
R/W  
0
Baud Rate Prescaler bits <5:0>.  
The baud rate prescaler relates the system oscillator frequency, fOSC, to the CAN bit time as  
described in the bit timing section.  
BRPbits <5:0>  
000000: BRP= 1  
000001: BRP= 2  
000010: BRP= 3  
000011: BRP= 4  
.
etc.  
.
111111: BRP = 64  
HOLT INTEGRATED CIRCUITS  
19  
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