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| 型号： | TLE6266G |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO28 |
| 封装： | 18 MM, PLASTIC, SOP-28 |
| 文件页数： | 49/50页 |
| 文件大小： | 1020K |
| 代理商： | TLE6266G |
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Datasheet TLE 6266 G
Version 2.21
8
July 29th, 2005
6
Circuit Description
The TLE 6266 G is a monolithic IC, which incorporates a failure tolerant low speed CAN-
transceiver for differential mode data transmission, a low dropout voltage regulator for
internal and external 5V supply as well as a SPI interface to control and monitor the IC.
Further there are three high side switches, two low side switches, a window watchdog
circuit and a reset circuit integrated. Figure 2 shows the block diagram of the TLE 6266.
6.1
Operation Modes
The TLE 6266 offers four different operation modes (see Figure 3), that are controlled
via the SPI input bits 9,10 (mode bits M0,M1) as shown in Table 1: the normal operation
mode, the receive-only mode, the Vbat stand-by mode and the cyclic wake operation
mode.
The cyclic wake mode itself is subdivided into two modes: the cyclic HS OFF and the
cyclic HS ON mode. Cyclic wake and Vbat stand-by mode are both designed for periods
that do not require communication on the CAN-Bus but offer a low power mode. The
lowest current consumption is achieved in the cyclic wake HS OFF mode.
Normal Operation Mode
The normal operation mode is designed to receive and transmit data messages as well
as to supply the ECU and control loads via HS- and LS- switches. RTL is switched to
VCC, RTH to GND. Table 3 gives an overview about the available functions in this mode.
RxD-only Mode
In the receive-only mode the receiver stage is activated and the transmitter stage is
deactivated. This means that data at the TxD input is not transmitted to the CAN bus but
receiving of data is still possible. The CANL line is pulled-up to VCC via the RTL output
and CANH is pulled to GND via RTH. Furthermore, it is possible to bypass the signal at
TxD to the RxD output during this mode.
This mode is useful in combination to a
dedicated network-management software that allows separate diagnosis for all nodes
(see Chapter 6.2). Table 3 gives an overview about the available functions in this mode.
Table 1
Operation modes bit settings
Mode Bit M1
(SPI Bit 10)
Mode Bit M0
(SPI Bit 9)
Normal operation 1
1
Cyclic Wake
1
0
RxD only
0
1
Vbat stand-by
0
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