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$iblockTypes = [];
$result = \Bitrix\Iblock\TypeTable::getList( [
    'select' => [
        'ID',
        'NAME' => 'LANG_MESSAGE.NAME',
    ],
    'filter' => [ '=LANG_MESSAGE.LANGUAGE_ID' => 'ru' ],
] );
while ($row = $result->fetch()) {
    $iblockTypes[ $row['ID'] ] = $row['NAME'];
}

/**
 * Тип инфоблока
 */
$iblockTypes = [];
$result = \Bitrix\Iblock\TypeTable::getList( [
    'select' => [
        'ID',
        'NAME' => 'LANG_MESSAGE.NAME',
    ],
    'filter' => ['=LANG_MESSAGE.LANGUAGE_ID' => 'ru'],
] );
while ($row = $result->fetch()) {
    $iblockTypes[$row['ID']] = $row['NAME'];
}


/**
 * Инфоблокs
 */
$iblocks = [];
$result = \Bitrix\Iblock\IblockTable::getList( [
    'select' => ['ID', 'NAME'],
    'filter' => ['IBLOCK_TYPE_ID' => $arCurrentValues['iblockType']],
] );
while ($row = $result->fetch()) {
    $iblocks[$row['ID']] = $row['NAME'];
}

$arComponentParameters = [
    'PARAMETERS' => [
        'iblockType' => [
            'PARENT'  => 'DATA_SOURCE',
            'NAME'    => 'Тип инфоблока',
            'TYPE'    => 'LIST',
            'VALUES'  => $iblockTypes,
            'REFRESH' => 'Y',
        ],
        'iblock'     => [
            'PARENT'  => 'DATA_SOURCE',
            'NAME'    => 'Инфоблок',
            'TYPE'    => 'LIST',
            'VALUES'  => $iblocks,
            'REFRESH' => 'Y',
        ],
    ],
];