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Hardware Preparation and Installation
MC92602 Reduced Interface SerDes Design Verification Board User’s Guide, Rev. 3
2-6
Freescale Semiconductor
Figure 2-3
depicts SW1 settings for using an onboard oscillator with the divide-by-two function set for the
MC92602 and 3.3V_CLK_OUT
n
SMA outputs. The 3.3V_CLK_OUT1 and 3.3V_CLK_OUT2 SMA
outputs are enabled and set to the divide-by-one function. The 3.3V_CLK_OUT3 and 3.3V_CLK_OUT4
SMA outputs are also enabled and are set to the divide-by-two function.
Figure 2-3. Reference Clock Selection Example Switch Settings
2.5
Interface Components
The following sections list the descriptions of the MC92602DVB interface connector components.
2.5.1
Parallel Inputs and Outputs
The MC92602 parallel I/O is supplied by the +1.5-V (HSTL) V
DDQ
voltage regulator (set for 1.5 or 1.8
V) and has a rail-to-rail signal swing. There are no bi-directional signals on the MC92602 or on the design
verification board.
2.5.1.1
Parallel Inputs
The parallel inputs, both data and control, are accessible via 2
×
10, 0.100" connectors.
Figure 2-4
depicts
the 2
×
10, 0.100" connector numbering scheme, with pin 1 being labeled on the board. A complete
mapping of the MC92602 inputs to the 2
×
10, 0.100" connectors is listed in
Appendix A, “Connector
Signals
.
”
Note that all even number pins are connected to ground.
Figure 2-4. 2
×
10, 0.100" Input Connector Numbering Scheme
(Top View)
For a description of the input functionality of the MC92602, refer to the
MC92602 Quad 1.25 Gbaud
Reduced Interface SerDes Reference Guide
.
1
2
3
4
5
6
ON
SW1
Onboard/External CLK_IN Select
MC92602 REF_CLK Frequency Select
MC100ES6222 Reset
3.3V_CLK_OUT1, _OUT2 Frequency Select
3.3V_CLK_OUT3, _OUT4 Frequency Select
MPC9456 (3.3V_CLKS) OUTPUT ENABLE_B
7
Alternate Oscillator ENABLE
Y1
External
Clk_In/2
Reset
Clk_In/2
Clk_In/2
Reset
Y2
Onboard
Clk_In
Enabled
Clk_In
Clk_In
Enabled
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Содержание MC92602
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