PHY_ACCESS
status = READ_REG16(pLayerPointers, mmio + PHY_ACCESS);
WRITE_REG32(pLayerPointers, mmio + PHY_ACCESS, data);
status = READ_REG16(pLayerPointers, mmio + PHY_ACCESS);
status = READ_REG16(pLayerPointers, mmio + PHY_ACCESS);
WRITE_REG32(pLayerPointers, mmio + PHY_ACCESS, data);
status = READ_REG16(pLayerPointers, mmio + PHY_ACCESS);