不兼容的IOB被锁定到同一个银行11冲突的IO标准是什么

根据我的理解，人力资源银行（ZC706评估板中的11个）应该能够在同一个银行支持LVDS_25和LVCMOS25。
但是，我收到以下错误。
错误消息如下：
[放置864]不兼容的IOB被锁定到同一个存储区11Conflicting IO标准是：IO标准1：名称= LVCMOS25，VREF = NR，VCCO = 2.50，TERM = NONE，DIR = OUTPUT，DRIVE_STR = 12锁定IOB的列表：fmc_imageon_vita_receiver_0_io_vita_spi_mosi_pin hdmi_data
[23] fmc_imageon_vita_receiver_0_io_vita_spi_sclk_pin fmc_imageon_vita_receiver_0_io_vita_spi_ssel_n_pin HDMI_SPDIF fmc_imageon_vita_receiver_0_io_vita_trigger_pin [2] fmc_imageon_vita_receiver_0_io_vita_trigger_pin [1] fmc_imageon_vita_receiver_0_io_vita_trigger_pin [0] IO标准2：名称= DIFF_HSTL_II_18，VREF = NR，VCCO = 1.80，TERM = NONE，DIR = OUTPUT，DRIVE_STR = NRList的锁定IOB的：fmc_imageon_vita_receiver_0_io_vita_clockin_n_pin
fmc_imageon_vita_receiver_0_io_vita_clokcin_p_pin由于VCCO不匹配，这些IO标准不兼容。
在UCF中分配以下I / O：
NET fmc_imageon_vita_receiver_0_io_vita_clockin_p_pin LOC =“AE22”;
＃CAM_CLK_PLL - FMC2-D17（LA13_P）NET fmc_imageon_vita_receiver_0_io_vita_clockin_n_pin LOC =“AF22”;
＃CAM_CLK_PLL - FMC2-D17（LA13_P）NET“fmc_imageon_vita_receiver_0_io_vita_clockin_p_pin”IOSTANDARD =“LVDS_25”|
DIFF_TERM = TRUE; NET“fmc_imageon_vita_receiver_0_io_vita_clockin_n_pin”IOSTANDARD =“LVDS_25”|
DIFF_TERM = TRUE;
NET fmc_imageon_vita_receiver_0_io_vita_spi_sclk_pin LOC =“AC24”;
＃CAM_SPI_SCLK - FMC2-G15（LA12_P）
NET“fmc_imageon_vita_receiver_0_io_vita_spi_ *”IOSTANDARD =“LVCMOS25”;
所以，我不明白为什么LVDS_25没有被分配并且抱怨它需要VCCO = 1.8V。