HI-3110
PIN DESCRIPTIONS
SIGNAL
SCK
CS
SI
SO
INT
STAT
TXEN
FUNCTION
INPUT
INPUT
INPUT
OUTPUT
OUTPUT
OUTPUT
INPUT
DESCRIPTION
SPI Clock. Data is shifted into or out of the SPI interface using SCK
Chip Select. Data is shifted into SI and out of SO when CS is low.
SPI interface serial data input
SPI interface serial data output
Active high. Programmable interrupt output
Active high. Programmable status output.
Active high. Transmit Enable pin. When the TXEN pin is asserted, any message
in the Transmit FIFO will be automatically loaded to the Transmit buffer and sent
if the bus is available. This pin is logically ORed with the TXEN and TX1M bits
in the CTRL1 register. When the TXEN pin is reset, messages loaded to the
FIFO will not be sent until TXEN or TX1M bits are set in the CTRL1 register.
Crystal input. A parallel resonant crystal can be connected between OSCIN and
OSCOUT. If an external clock is used, it should be connected to the OSCIN pin
and the OSCOUT pin should be left floating. The internal oscillator should be
shut off by setting the OSCOFF bit in the CTRL1 register.
Crystal output. If an external clock is used, this pin should be left floating and
disabled by setting the OSCOFF bit in the CTRL1 register.
General purpose pin 1, which can be programmed to reflect the values of
interrupt and status flag bits.
General purpose pin 2, which can be programmed to reflect the values of
interrupt and status flag bits.
Clock output pin with programmable frequency divider.
VDD/2 output bias (Powered off in Sleep Mode and when the common mode
bias is greater than 25V).
CAN bus line high.
CAN bus line low.
Active High. Device Master Reset input pin. Asserting this pin resets all registers
and memory buffers to their default state at start-up.
5V supply voltage input.
3.3V supply voltage input. This supply is used to drive the host digital logic I/O.
It can either be connected directly to VDD (+5V) or a +3.3V supply.
Supply voltage ground.
INTERNAL PULL UP / DOWN
50K ohm pull-down
50K ohm pull-up
50K ohm pull-down
10
0K ohm pull-down
OSCIN
INPUT
OSCOUT
GP1
GP2
CLKOUT
SPLIT
CANH
CANL
MR
VDD
VLOGIC
GND
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
BUS I/O
BUS I/O
INPUT
POWER
POWER
POWER
50K ohm pull-down
HOLT INTEGRATED CIRCUITS
3
HOLTIC [ HOLT INTEGRATED CIRCUITS ]
