R_EB1
regs[R_EB1] = 0xff;
regs[R_EB1] = 0xfc;
tda_reg("EXTENDED_BYTE_1 = 0x%02x\n", 0xff & regs[R_EB1]);
regs[R_EB1] |= 0x04; /* main vco */
regs[R_EB1] &= ~0x04; /* cal vco */
regs[R_EB1] &= ~0x02;
regs[R_EB1] &= ~0x01;
ret = tda18271_write_regs(fe, R_EB1, 1);