Symbol: RFBS
usr/src/uts/common/io/audio/drv/audiols/audiols.c
735
write_chan(dev, RFBS, 2, chunksz << 16);
usr/src/uts/common/io/audio/drv/audiop16x/audiop16x.c
519
write_reg(dev, RFBS, 0, (port->buf_size) << 16);