Specifications

122 Data Path Routing (DPR) HighWire MTP-2 - 1.2, September 4, 2002
DPR_FALLBACK_CLOCK. This command configures the H.110/CT bus fallback
or secondary clock to the specified source.
Arg points to an integer containing one of the values listed below. Note that
LREF0 and LREF4 through LREF7 are available only as the primary clock. The
secondary clock must be different from the primary clock or an error results.
DPR_BUS_CLOCK. This command selects a T8100 clock source to drive the
local bus.
Arg points to an integer containing one of the values listed below.
DPR_BUS_NETREF. This command selects a T8100 clock source for the
NETREF signal.
Arg points to an integer containing the NETREF assigned to the CT Bus and
the source of the NETREF clock. Both values are packed into the integer value
using the macro SET_NETREF (assign, source). The sources for the NETREF
signal are:
T8100_CLK_INTERNAL Run the secondary clock from the internal oscillator.
T8100_CLK_FRAMEA Run the secondary clock from Frame A.
T8100_CLK_FRAMEB Run the secondary clock from Frame B
T8100_CLK_NETREF1 Run the secondary clock from External Net Reference 1.
T8100_CLK_NETREF2 Run the secondary clock from External Net Reference 2.
T8100_CLK_LREF1 Run the secondary clock from Local Reference 1.
T8100_CLK_LREF2 Run the secondary clock from Local Reference 2.
T8100_CLK_LREF3 Run the secondary clock from Local Reference 3.
T8100_CT_BUS_NO_CLK Do not drive the local bus clock.
T8100_CT_BUS_CLK_A Clock A to drive the local bus.
T8100_CT_BUS_CLK_B Clock B to drive the local bus.
T8100_CT_BUS_CLK_AB Clock A and B to drive the local bus.
T8100_CT_BUS_NO_NETREF No NETREF assigned to CT Bus.
T8100_CT_BUS_NETREF_1 NETREF1 assigned to CT Bus.
T8100_CT_BUS_NETREF_2 NETREF2 assigned to CT Bus.
T8100_CT_BUS_NETREF_12 Both NETREF1 and NETREF2 assigned to
CT Bus.