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CT Bus Interface: CT Bus Routing With the T8110 Installed (option 2)
10006024-04 Katana
®
752i User’s Manual
13-7
Local CT Bus Operation
On the Katana
®
752i, option 2, the local CT clock master must always be the T8110. The
two PTMC sites cannot be local CT bus masters (primary or secondary). They can only be CT
slaves.
• PTMCx local CT clocks CT_C8A/B must be sourced from the T8110 L_SCx pins, see
Fig. 13-3.
• PTMCx local CT frames CT_FA/B must be sourced from T8110 FGx pins.
• TSIs NETREFx signals may come from PTMC sites via the TSI LREFx pins or from H.110
bus (J4) via the TSI NETREFx pins, see
Fig. 13-3.
• PTMC site 1 routes data lines CD_D19:0 to TSI LCT_D19:0.
• PTMC site 2 routes data lines CT_D19:0 to TSI LCT_D12:31 (NOTE: data line swapping as
shown in
Table 13-2).
• PTMC site 2 CT_D12:19 also routes eight data bits directly to PTMC site 1 CT_D19:12
(NOTE: data line swapping as shown in
Table 13-2).
The local CT bus signals are separated into clock and data/control groups. Clock signals
include CT_C8A (operates at 8 MHz), CT_C8B, CT_FRAMEA, CT_FRAMEB, NETREF1, and
NETREF2, see
Fig. 13-3. All other signals are data or control.
LCT_D0 CT_D0 —
T8110: PTMC Site 1: PTMC Site 2: