Acromag AcroPack AP560, User Manual

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AcroPack Series AP560 CAN Bus Interface Module
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Free Running Timer
A single command reads the16-bit timer value in two data bytes, TIMERUB
and TIMERLB. TIMERUB is read first.
Table 28 TIMERUB, TIMERLB (Read-only 0xFA)
BIT FUNCTION
7:0 T 15:8 - Free Running Timer Upper Byte, bits <15:8>.
The 16-bit free-running timer starts counting from zero
following RESET. The timer counts linearly up to 0xFFFF
and then wraps around to 0x0000. Note: A timer overrun
is not flagged by the HI-3111. The timer is clocked by the
HI-3111 bit clock and continuously increments by the bit
rate (default). The user may program the timer to 2, 4 or 8
bit clocks by setting the TTDIV1:0 bits in Control Register 0,
CTRL0.
The timer may be reset by the host after any interrupt
condition (e.g. reading the receive buffer, transmit FIFO
empty, etc.), by issuing a command (see Table 29)
7:0 T 7:0 – Free Running Timer Lower Byte, bits <7:0>.
Command Summary
Table 29 lists the available HI-3111 commands that are applicable to the
AP560.
Table 29 Command Summary
Read Commands Code Data bytes Description
Read Temporary Receive Buffer with Time Tag 0x42 15 (see Table 35)
Read Temporary Receive Buffer without Time Tag 0x44 13 (see Table 35)
Read Next FIFO Message with Time Tag 0x46 16 (see Table 35)
Read Next FIFO Message without Time Tag 0x48 14 (see Table 35)
Read Next FIFO Message Data only with Time Tag 0x4A 11 (see Table 36)
Read Next FIFO Message Data only without Time
Tag 0x4C 9 (see Table 35)
Read Filter 0 ID 0xA2 6 (see Table 33)
Read Filter 1 ID 0xA4 6 (see Table 33)
Read Filter 2 ID 0xA6 6 (see Table 33)
Read Filter 3 ID 0xA8 6 (see Table 33)
Read Filter 4 ID 0xAA 6 (see Table 33)
Read Filter 5 ID 0xAC 6 (see Table 33)
Read Filter 6 ID 0xAE 6 (see Table 33)
Read Filter 7 ID 0xB2 6 (see Table 33)
Read Mask 0 ID 0xB4 6 (see Table 34)
Read Mask 1 ID 0xB6 6 (see Table 34)
Read Mask 2 ID 0xB8 6 (see Table 34)
Read Mask 3 ID 0xBA 6 (see Table 34)
Read Mask 4 ID 0xBC 6 (see Table 34)
Read Mask 5 ID 0xBE 6 (see Table 34)