TMS320DM6467CCUT7 Datasheet, PDF (155/355 Pages) Texas Instruments – Digital Media System-on-Chip

TMS320DM6467
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SPRS403H – DECEMBER 2007 – REVISED JUNE 2012
7.4.2 Clock Input Option 2—1.8-V LVCMOS-Compatible Clock Input
7.4.2.1 27-MHz System Oscillator 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 system
oscillator. The external connections are shown in Figure 7-10. The DEV_MXI/DEV_CLKIN pin is
connected to the 1.8-V LVCMOS-Compatible clock source. The DEV_MXO pin is left unconnected. The
DEV_V_SS pin is connected to board ground (V_SS). The DEV_DV_DD18 pin can be connected to the same
1.8-V power supply as DV_DDR2.
DEV_MXI/
DEV_CLKIN ^DEV_MXO
DEV_V_SS DEV_DV_DD18 DEV_DV_SS DEV_CV_DD
NC
1.8 V
1.2 V
A. The DEV_CV_DD core voltage value is device dependent (e.g., when using SmartReflex, DEV_CV_DD can be either 1.2
V or 1.05 V).
Figure 7-10. 1.8-V LVCMOS-Compatible Clock Input^(A)
The clock source must meet the DEV_MXI/DEV_CLKIN timing requirements in Section 7.5.5, Clock PLL
Electrical Data/Timing (Input and Output Clocks).
7.4.2.2 24-MHz Auxiliary Oscillator 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 auxiliary
oscillator. The external connections are shown in Figure 7-11. The AUX_MXI/AUX_CLKIN pin is
connected to the 1.8-V LVCMOS-Compatible clock source. The AUX_MXO pin is left unconnected. The
AUX_V_SS pin is connected to board ground (V_SS). The AUX_DV_DD18 pin can be connected to the same
1.8-V power supply as DV_DDR2.
AUX_MXI/
AUX_CLKIN ^AUX_MXO
AUX_V_SS AUX_DV_DD18 AUX_DV_SS AUX_CV_DD
NC
1.8 V
1.2 V
A. The AUX_CV_DD core voltage value is device dependent (e.g., when using SmartReflex, AUX_CV_DD can be either 1.2
V or 1.05 V).
Figure 7-11. 1.8-V LVCMOS-Compatible Clock Input^(A)
The clock source must meet the AUX_MXI/AUX_CLKIN timing requirements in Section 7.5.5, Clock PLL
Electrical Data/Timing (Input and Output Clocks).
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Peripheral Information and Electrical Specifications 155
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