ZHCSBT2G November 2012 – October 2017 66AK2H06 , 66AK2H12 , 66AK2H14
PRODUCTION DATA.
The logic level present on each device configuration pin is latched at power-on reset to determine the device configuration. The logic level on the device configuration pins can be set by using external pullup/pulldown resistors or by using some control device (for example, FPGA/CPLD) to intelligently drive these pins. When using a control device, care should be taken to ensure there is no contention on the lines when the device is out of reset. The device configuration pins are sampled during power-on reset and are driven after the reset is removed. To avoid contention, the control device must stop driving the device configuration pins of the SoC. Table 10-29 describes the device configuration pins.
NOTE
If a configuration pin must be routed out from the device and it is not driven (Hi-Z state), the internal pullup/pulldown (IPU/IPD) resistor should not be relied upon. TI recommends the use of an external pullup/pulldown resistor. For more detailed information on pullup/pulldown resistors and situations in which external pullup/pulldown resistors are required, see Section 4.4.
CONFIGURATION PIN | PIN NO. | IPD/IPU (1) | DESCRIPTION |
---|---|---|---|
LENDIAN(1)(2) | F29 | IPU | Device endian mode (LENDIAN)
|
BOOTMODE[15:0](1)(2) | B30, D29, A35, B29, E29, D30, C30, A30, G30, F31, E30, F30, A31, F24, E24, D24 | IPD | Method of boot
|
AVSIFSEL[1:0](1)(2) | M1, M2 | IPD | AVS interface selection
|
MAINPLLODSEL(1)(2) | E32 | IPD | Main PLL Output divider select
|
ARMAVSSHARED(1) | G24 | IPD | ARM AVS Shared with the rest of SOC AVS
|
BOOTMODE_RSVD(1) | B31 | IPD | Boot mode reserved. Pulldown resistor required on pin. |
DDR3A_MAP_EN(1) | A36 | IPD | Control ARM remapping of DDR3A address space in the lower 4GB (32b space) Mode select
|