TMS320DM6443_15 Datasheet, PDF (104/219 Pages) Texas Instruments – Digital Media System-on-Chip

TMS320DM6443
SPRS282G – DECEMBER 2005 – REVISED AUGUST 2010
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6.5.2 Clock Input Option 2 – 1.8-V LVCMOS-Compatible Clock Input
In this option, a 1.8-V LVCMOS-compatible clock input is used as the external clock input to the DM6443
device. The external connections are shown in Figure 6-12. The MXI/CLKIN pin is connected to the 1.8-V
LVCMOS-compatible clock source. The MXO pin is left unconnected. The MXV_SS pin is connected to
board ground (V_SS). The MXV_DD pin can be connected to the same 1.8-V power supply as DV_DD18. The
clock source must meet the MXI/CLKIN timing requirements shown in Table 6-16, Timing Requirements
for MXI/CLKIN.
MXI/CLKIN
MXO
MXV
SS
MXV
DD
NC
1.8 V
Figure 6-12. 1.8-V LVCMOS-Compatible Clock Input
Figure 6-12 also applies to the USB external clock input. When a 1.8-V LVCMOS-compatible clock input is
used as the external clock input, the M24XI pin is connected to the 1.8-V LVCMOS-compatible clock
source. The M24XO pin is left unconnected. The M24V_SS pin is connected to board ground (V_SS). The
M24V_DD pin can be connected to the same 1.8-V power supply as DV_DDR2. The clock source must meet
the MXI/CLKIN timing requirements shown in Table 6-17, Timing Requirements for M24XI (-594) Devices.
104 Peripheral and Electrical Specifications
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