6 Evaluation Board Inputs and Outputs
contains descriptions of the inputs and outputs for the evaluation board. Additionally, some applicable
TICS Pro programming controls are noted for convenience.
Table 6-1. Description of Evaluation Board Inputs and Outputs
CONNECTOR NAME
SIGNAL TYPE, INPUT/OUTPUT
DESCRIPTION
Clock Outputs
Populated:
CLKout0_P(J1),
CLKout0_N(J2),
CLKout1_P(J3),
CLKout1_N(J4),
CLKout2_P(J6),
CLKout2_N(J5),
CLKout3_P(J8),
CLKout3_N(J7),
CLKout4_P(J9),
CLKout4_N(J10),
CLKout5_P(J12),
CLKout5_N(J11),
CLKout6_P(J13),
CLKout6_N(J14),
CLKout7_P(J16),
CLKout7_N(J15),
CLKout8_P(J17),
CLKout8_N(J18),
CLKout9_P(J20),
CLKout9_N(J19)
Analog, Output
Clock outputs with programmable output buffers.
The output terminations by default on the evaluation board are
shown here:
Clock Output Pair
Default Board Termination
CLKout0
LVPECL / LCPECL, 240 Ω
CLKout1
LVPECL / LCPECL, 240 Ω
CLKout2
LVPECL / LCPECL, 120 Ω
CLKout3
LVPECL / LCPECL, 120 Ω
CLKout4
CML, 68 nH - 20 Ω
CLKout5
CML, 50 Ω to Vcc
CLKout6
CML, 68 nH - 20 Ω
CLKout7
CML, 50 Ω to Vcc
CLKout8
LVDS / HSDS
CLKout9
LVDS / HSDS
Each CLKout pair has a programmable LVDS, LVPECL, LCPECL,
HSDS, CML, or LVCMOS buffer. The output buffer type can be
selected in the TICS Pro under the
Clock Outputs
) through the CLKoutX_FMT control. All clock outputs are AC-
coupled to allow safe testing with RF test equipment. If an output
pair is programmed to LVCMOS, each output can be independently
configured (normal, inverted, or off/tri-state). Best performance/EMI
reduction is achieved by using a complementary output mode like
Norm/Inv. TI does NOT recommend using Norm/Norm or Inv/Inv
mode.
Not Populated:
CLKout10_P(J21),
CLKout10_N(J22),
CLKout11_P(J24),
CLKout11_N(J23),
CLKout12_P(J25),
CLKout12_N(J26),
CLKout13_P(J28),
CLKout13_N(J27)
OSCout
OSCout_P(J29)
OSCout_N(J30)
Analog, Output
Buffered outputs of OSCin port.
The output terminations on the evaluation board are shown here.:
OSC Output Pair
Default Board Termination
OSCout
LVPECL, 240 Ω
OSCout has a programmable LVDS, LVPECL, or LVCMOS output
buffer. The OSCout buffer type can be selected in the TICS
Pro under the
Clock Outputs
OSCout_FMT control.
OSCout is AC-coupled to allow safe testing with RF test equipment.
If OSCout is programmed as LVCMOS, each output can be
independently configured (normal, inverted, inverted, and off/tri-
state). Best performance/EMI reduction is achieved by using a
complementary output mode like Norm/Inv. TI does NOT recommend
using Norm/Norm or Inv/Inv mode.
Evaluation Board Inputs and Outputs
SNAU283 – OCTOBER 2022
LMK04368EPEVM User’s Guide
9
Copyright © 2022 Texas Instruments Incorporated
