Atmel SpaceWire Router SpW-10X - Manual (Page 118)

Ref.: UoD_SpW-10X_
UserManual
Issue: 3.4
SpW-10X
SpaceWire Router
User Manual Date: 11 th
July 2008
Preliminary
118
Table 9-10 Router Control Register Fields
Bits Name Reset Value Description Read/
Write
0 Watchdog
Timer Mode
/ Blocking
Allowed
Mode
Set by the input signal
POR_TIMEOUT_EN_N
.
When ‘0’ – Watchdog Timer Mode
When ‘1’ – Blocking Allowed Mode
When set to ‘1’ then the
watchdog timer mode is
enabled.
When set to ‘0’ then the
blocking allowed mode is
enabled.
See section 8.3.5.
R/W
3:1 Timeout
Selection
Set by the input signal
POR_SEL_TIMEOUT0_N
.
When 0, timeout period is 60-80 µs.
When 1, timeout period is ~1.3 ms.
Selects the blockage
timeout period. Values as
below:
“000” => 60-80 µs (N = 2)
“001” => ~1.3 ms (N = 6)
“010” => ~10 ms (N = 9)
“011” => ~82 ms (N = 12)
“100” => ~1.3 s (N = 16)
“101” => ~1.3 s (N = 16)
“110” => ~1.3 s (N = 16)
“111” => ~1.3 s (N = 16)
The actual value of the
timeout period is given by:
200 x (2^N) x TCLK
+/- 200 x TCLK
where TCLK is the period of
the 10 MHz clock signal.
R/W
4 Enable
disable on
silence
Set by the input signal
POR_DISCONNECT_ON_SILENCE_N
.
When set the
corresponding SpaceWire
port will be disconnected if
no activity is detected over
the timeout period.
The SpaceWire port will
only be disconnected if the
port was initially started
when a packet arrived at
the router to be routed out
of the specific SpaceWire
port and the start on
request bit was set.
If an external device starts
R/W