AM1802_15 Datasheet, PDF (38/182 Pages) Texas Instruments – AM1802 ARM® Microprocessor

AM1802
SPRS710E – NOVEMBER 2010 – REVISED MARCH 2014
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Table 3-21. Unused USB0 Signal Configurations (continued)
SIGNAL NAME
USB0_DRVVBUS
USB0_VDDA33
USB0_VDDA18
USB0_VDDA12
USB_REFCLKIN
USB_CVDD
Configuration (When USB0 is not used)
No Connect
No Connect
No Connect
Internal USB PHY output connected to an external 0.22-μF filter capacitor
No Connect or other peripheral function
1.2V
SIGNAL NAME
RTC_XI
RTC_XO
RTC_ALARM
RTC_CVDD
RTC_VSS
Table 3-22. Unused RTC Signal Configuration
Configuration
May be held high (CVDD) or low
No Connect
May be used as GPIO or other peripheral function
Connect to CVDD
VSS
Table 3-23. Unused DDR2/mDDR Controller Signal Configuration
SIGNAL NAME
DDR_D[15:0]
DDR_A[13:0]
DDR_CLKP
DDR_CLKN
DDR_CKE
DDR_WE
DDR_RAS
DDR_CAS
DDS_CS
DDR_DQM[1:0]
DDR_DQS[1:0]
DDR_BA[2:0]
DDR_DQGATE0
DDR_DQGATE1
DDR_ZP
DDR_VREF
DDR_DVDD18
Configuration ⁽¹⁾
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
No Connect
(1) The DDR2/mDDR input buffers are enabled by default on device power up and a maximum current draw of 25mA can result on the 1.8V
supply. To minimize power consumption, the DDR2/mDDR controller input receivers should be placed in power-down mode by setting
VTPIO[14] = 1.
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