MC68HC912BD32 Datasheet, PDF (180/292 Pages) Freescale Semiconductor, Inc – Advance Information

Freescale Semiconductor, Inc.
Byteflight™ Module
Tolerances
The receiver is designed to handle signals on the Byteflight™ with the
tolerances shown in Figure 30 and in Table 35.
RX PIN
RX PIN
trf
trr
tfr
tff
Figure 30 Pulse Time Tolerance
Glitch Filtering
Tolerance
trr
tff
trf
tfr
Table 35 Tolerances
n * t_bit ± 5ns
n * t_bit ± 5ns
n * t_bit ± 35ns
n * t_bit ± 35ns
Range
2 ≤ n ≤ 10
2 ≤ n ≤ 10
1 ≤ n ≤ 10
1 ≤ n ≤ 10
Glitches of a duration less than 25ns are filtered out.
Functional Overview
Recieve Process
A part or all of the message buffers can be configured as a mailbox
system consisting of dedicated receive buffers. The mailbox must be
contiguous in the register map starting after the last FIFO buffer and
ending before the first transmit buffer. The Byteflight™ transfers
received messages from the serial message buffer to the mailbox
message buffer with matching ID.
MC68HC912BD32 Rev 1.0
Byteflight™ Module
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