TNETV1647GSTZWT datasheet(108/236 Pages) TI1

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MXI/CLKIN

MXO

MXV

1.8V

MXV

TMS320DM6441

SPRS359E – SEPTEMBER 2006 – 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 DM6441

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 MXVSS pin is connected to

board ground (VSS). The MXVDD pin can be connected to the same 1.8-V power supply as DVDD18. The

clock source must meet the MXI/CLKIN timing requirements shown in Table 6-16, Timing Requirements

for MXI/CLKIN.

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 M24VSS pin is connected to board ground (VSS). The

M24VDD pin can be connected to the same 1.8-V power supply as DVDDR2. The clock source must meet

the MXI/CLKIN timing requirements shown in Table 6-17, Timing Requirements for M24XI Devices.

108

Peripheral and Electrical Specifications

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TNETV1647GSTZWT 데이터시트(PDF) 108 Page - Texas Instruments