HI-3110 HOLTIC [Holt Integrated Circuits], HI-3110 Datasheet - Page 24

• Manufacturer Part Number: HI-3110
• Description: Avionics CAN Controller with Integrated Transceiver
• Manufacturer: HOLTIC [Holt Integrated Circuits]

The Interrupt Flag Register INTF bits will be set by HI-3110 when the corresponding related events described below occur. If
individual bits in the Interrupt Enable Register INTE are set, the INT pin will be latched high when any of the corresponding INTF bits
are set. This alerts the host that one of the conditions below has occurred. Reading this register will clear all bits and reset the INT pin.
The value of individual bits in the INTF register may also be reflected on the GP1 and GP2 pins by setting the correct bit combinations
in the General Purpose Pins Enable Register GPINE (see section General Purpose Pins Enable Register).
Bit Name
7
6
5
4
3
2
1
0
INTERRUPT FLAG REGISTER: INTF
(Read only)
(Read, SPI Op-code 0xDE)
RXTMP
RXFIFO
TXCPLT
BUSERR
MCHG
WAKEUP
F1MESS
F0MESS
R/W
R
R
R
R
R
R
R
R
Default Description
0
0
0
0
0
0
0
0
Message received in temporary receive buffer (unfiltered).
This bit is set when a valid message is received in the temporary receive buffer.
Message received in FIFO (filtered).
This bit is set when a valid message passes the filter criteria and is passed from the
temporary receive buffer to the receive FIFO.
Successful transmission complete.
This bit is set when a message is successfully transmitted.
Bus Error.
This bit is set when a bus error occurs. Bits 4:0 in the ERR register can be read to determine
Mode Change bit.
This bit is set when the mode of operation is changed. Any pending transmissions in the
transmit FIFO will be completed (FIFO will be emptied) before the mode change occurs.
Wake-Up detected.
This bit is set when the HI-3110 wakes up from Sleep Mode in response to bus activity.
Filter 1 passed a valid message.
This bit is set when receive filter one passes a valid message. FILHIT3:0 bits will also be set to
<1001> in the Message Status Register, MESSTAT.
Filter 0 passed a valid message.
This bit is set when receive filter zero passes a valid message. FILHIT3:0 bits will also be set to
<1000> in the Message Status Register, MESSTAT.
the source of the error.
HOLT INTEGRATED CIRCUITS
HI-3110
MSB
7
24
6
5
4
3
2
1
LSB
0