SAK82C900 Infineon Technologies, SAK82C900 Datasheet - Page 8

• Manufacturer Part Number: SAK82C900
• Manufacturer: Infineon Technologies

Specifications of SAK82C900

• Data Rate: 1000Kbps
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (typ): 3.3/5V
• Package Type: DSO
• Supply Current: 80mA
• Operating Temperature (max): 125C
• Operating Temperature (min): -40C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 28
• Lead Free Status / RoHS Status: Supplier Unconfirmed

Preliminary
Connection to a Host Device via the Serial Interface
The second possibility to connect the 82C900 to a host device is via the serial interface.
This mode is selected if the pin MODE0=1 and MODE1=0.
The standard four-line SPI-compatible interface has been extended by a RDY signal,
which indicates that the serial interface is ready for the next access by the host.
The page size is reduced to 128 bytes per page, because the MSB of the address byte
contains a read/write indication. A special incremental access mode has been
implemented in order to reduce significantly the number of transferred bytes for
consecutive register accesses.
The 8 remaining I/O pins from the unused parallel interface are controlled by a port
control logic and can be used as I/O extension. These lines can be read or written by the
serial channel or by CAN messages. Furthermore, these lines can be programmed as
additional interrupt output lines in order to increase the number of independent
interrupts.
The output lines OUT0 and OUT1 have the same functionality in the case a parallel
interface or a serial interface connects the 82C900 to a host device.
Figure 3
Data Sheet
Host Connection via the Serial Interface
Input/Output
Extension
Transceiver
CAN Bus A
Port Control
I/O7..0
TwinCAN Module
RXDCA,
TXDCA
Serial Interface
Transceiver
CAN Bus B
CTRL3..0
8
RXDCB,
TXDCB
Host
RDY
Clock Control
Interrupt
Control
82C900
OUTx
V 1.0D3, 2001-03
82C900