Tektronix TLA7AA1, Manual, Page: 33 / 173

Specifications
1- 6
TLA7AXX Logic Analyzer Module Service Manual
Table 1- 4: Clocking (Cont.)
Characteristic Description
Demultiplex clocking (two clock edges required)
Demultiplex channels (2:1)
TLA7AA3, TLA7AA4, TLA7AB4 modules
Any individual channel can be demultiplexed with its partner channel. If multiplexing is
enabled, all of the A and D channels are multiplexed; there is no individual selection.
Channels demultiplex as follows:
A3(7:0) to/from D3(7:0)
A2(7:0) to/from D2(7:0)
A1(7:0) to/from D1(7:0)
A0(7:0) to/from D0(7:0)
TLA7AA1, TLA7AA2, TLA7AB2 modules Any individual channel can be demultiplexed with its partner channel. If multiplexing is
enabled, all of the A and D channels are multiplexed; there is no individual selection.
Channels demultiplex as follows:
A3(7:0) to/from C3(7:0)
A2(7:0) to/from C2(7:0)
A1(7:0) to/from D1(7:0) 64+4 modules only
A0(7:0) to/from D0(7:0) 64+4 modules only
Demultiplex channels (4:1)
TLA7AA3 TLA7AA4 TLA7AB4 modules
Unlike the 2:1 Demultiplex, the channels within a group of four cannot arbitrarily drive
the others.
TLA7AA3, TLA7AA4, TLA7AB4 modules
E3(7:0) to E2(7:0), E1(7:0), E0(7:0) 128+8 modules only
A3(7:0) to A2(7:0), D3(7:0), D2(7:0)
A1(7:0) to A0(7:0), D1(7:0), D0(7:0)
C3(7:0) to C2(7:0), C1(7:0), C0(7:0)
CK3 to CK2, Q3, Q2 128+8 modules only
CK1 to CK0, Q1, Q0
TLA7AA1, TLA7AA2, TLA7AB2 modules Unlike the 2:1 Demultiplex, the channels within a group of four cannot arbitrarily drive
the others.
A1(7:0) to A0(7:0), D1(7:0), D0(7:0) 64+4 modules only
C3(7:0) to C2(7:0), A3(7:0), A2(7:0)
Time between Demultiplex clock edges
(
Typical
)
Same limitations as normal synchronous acquisition
Source synchronous clocking
Clocks per module Four
Clocks with merged modules When merged, the slave modules have two clocks available from the master module.
Including the local clocks, the total is six clocks.
Clock groups Four for a single module and for a merged system
Size of clock group valid FIFO Four stages; this allows four (source synchronous or other) clocks to occur before the
clock that completes the Clock Group Valid signal for that group
Source synchronous clock alignment window Channel-to-channel skew only