Step Technica MKY02, Руководство пользователя

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MKY02 User’s Manual
(for Hi-speed Link System)
4 - 6
4.2.2 Operation of Cascade Connection Pins
The cascade connection pins of the cascade-connected MKY02 operate as follows:
(1) The packets which port 0 of the highest-priority MKY02 received are transmitted from ports 1 to 7
and are also transmitted from ports 1 to 7 of another MKY02 via the “priority” cascade connection
pins (COE1, COP1, COD1, COHR, CIE1, CIP1, CID1, CIHR) (Fig. 4.5). At this time, the transmit
packet data that is of an NRZ signal format is output from the COD1 pin and its minimum pulse width
is a time of “2
×
T
BPS
”. The High-level status signals for packet transmission control are output from
the COE1, COP1, and COHR pins.
(2) The packets which ports 1 to 7 of the non-highest-priority MKY02 received are transmitted from
port 0 of the highest-priority MKY02 via the “reverse priority” cascade connection pins (COE2,
COP2, COD2, CIE2, CIP2, CID2) (Fig. 4.6). At this time, the transmit packet data that is of an NRZ
signal format is output from the COD2 pin and its minimum pulse width is a time of “2
×
T
BPS
”. The
High-level status signals for packet transmission control are output from the COE2 and COP2 pins.
(3) The COE1, COP1, COD1, and COHR pins output a Low level in cases other than the above (1).
(4) The COE2, COP2, and COD2 pins output a Low level in cases other than the above (2).