max2837 driver under construction

This commit is contained in:
Will Code
2012-05-29 18:10:52 -04:00
parent 845b7e3dd8
commit 61b8be45fe
3 changed files with 539 additions and 0 deletions

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firmware/common/max2837.c Normal file
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#include <stdint.h>
#include "max2837.h"
#include "max2837_regs.def" // private register def macros
#if (defined DEBUG || defined BUS_PIRATE)
#include <stdio.h>
#define LOG printf
#else
#define LOG(x,...)
#endif
uint16_t max2837_regs[MAX2837_NUM_REGS] = {
0x150, /* 0 */
0x002, /* 1 */
0x1f4, /* 2 */
0x1b9, /* 3 */
0x00a, /* 4 */
0x080, /* 5 */
0x006, /* 6 */
0x000, /* 7 */
0x080, /* 8 */
0x018, /* 9 */
0x058, /* 10 */
0x016, /* 11 */
0x24f, /* 12 */
0x150, /* 13 */
0x1c5, /* 14 */
0x081, /* 15 */
0x01c, /* 16 */
0x155, /* 17 */
0x155, /* 18 */
0x153, /* 19 */
0x241, /* 20 */
0x02c, /* 21 */
0x1a9, /* 22 */
0x24f, /* 23 */
0x180, /* 24 */
0x100, /* 25 */
0x3ca, /* 26 */
0x3e3, /* 27 */
0x0c0, /* 28 */
0x3f0, /* 29 */
0x080, /* 30 */
0x000 }; /* 31 */
/* Mark all regsisters dirty so all will be written at init. */
uint32_t max2837_regs_dirty = 0xffffffff;
void max2837_init(void)
{
LOG("# max2837_init\n");
/* TODO - reset all register values to defaults? Where from? */
max2837_regs_dirty = 0xffffffff;
/* Write default register values to chip. */
max2837_regs_commit();
}
/* SPI register read. */
uint16_t max2837_spi_read(uint8_t r) {
return 0;
}
/* SPI register write */
void max2837_spi_write(uint8_t r, uint16_t v) {
#ifdef BUS_PIRATE
LOG("{0x%02x 0x%02x]\n", 0x80 | ((uint16_t)r<<2) | ((v>>8) & 0x3),
v & 0xff);
#endif
#ifdef DEBUG
LOG("0x%03x -> reg%d\n", v, r);
#endif
}
uint16_t max2837_reg_read(uint8_t r)
{
if ((max2837_regs_dirty >> r) & 0x1) {
max2837_spi_read(r);
};
return max2837_regs[r];
}
void max2837_reg_write(uint8_t r, uint16_t v)
{
max2837_regs[r] = v;
max2837_spi_write(r, v);
MAX2837_REG_SET_CLEAN(r);
}
void max2837_regs_read(void)
{
;
}
static inline void max2837_reg_commit(uint8_t r)
{
max2837_reg_write(r,max2837_regs[r]);
}
void max2837_regs_commit(void)
{
int r;
for(r = 0; r < MAX2837_NUM_REGS; r++) {
if ((max2837_regs_dirty >> r) & 0x1) {
max2837_reg_commit(r);
}
}
}
/* TODO - placeholder */
void max2837_start(void)
{
LOG("# max2837_start\n");
set_MAX2837_EN_SPI(1);
max2837_regs_commit();
}
/* TODO - placeholder */
void max2837_stop(void)
{
LOG("# max2837_stop\n");
set_MAX2837_EN_SPI(0);
max2837_regs_commit();
}
void max2837_set_frequency(uint32_t freq)
{
uint8_t band;
uint32_t div_frac;
uint8_t div_int;
/* Select band. Allow tuning outside specified bands. */
if (freq < 2400000000)
band = MAX2837_LOGEN_BSW_2_3;
else if (freq < 2500000000)
band = MAX2837_LOGEN_BSW_2_4;
else if (freq < 2600000000)
band = MAX2837_LOGEN_BSW_2_5;
else
band = MAX2837_LOGEN_BSW_2_6;
LOG("# max2837_set_frequency %ld, band %d\n", freq, band);
/* TODO - frac vs int, compute values */
div_int = 0x12;
div_frac = 0x34567;
/* Write order matters here, so commit INT and FRAC_HI before
* committing FRAC_LOG, which is the trigger for VCO
* auto-select. TODO - it's cleaner this way, but it would be
* faster to explicitly commit the registers explicitly so the
* dirty bits aren't scanned twice. */
set_MAX2837_SYN_INT(div_int);
set_MAX2837_SYN_FRAC_HI((div_frac >> 10) & 0x3f);
max2837_regs_commit();
set_MAX2837_SYN_FRAC_LO(div_frac & 0x3f);
max2837_regs_commit();
}
uint16_t test(void)
{
LOG("# test\n");
uint16_t t = get_MAX2837_Lbias();
set_MAX2837_Lbias(MAX2837_Lbias_NOMINAL);
set_MAX2837_Mbias(MAX2837_Mbias_NOMINAL);
max2837_regs_commit();
return t;
}
int main(int ac, char **av)
{
max2837_init();
max2837_start();
test();
max2837_set_frequency(2441000000);
max2837_stop();
}

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#ifndef __MAX2837_H
#define __MAX2837_H
/* TODO - make this a private header for max2837.c only, make new max2837.h */
/* 32 registers, each containing 10 bits of data. */
#define MAX2837_NUM_REGS 32
/* TODO - these externs will be local to max2837.c ... don't define here? */
extern uint16_t max2837_regs[MAX2837_NUM_REGS];
extern uint32_t max2837_regs_dirty;
#define MAX2837_REG_SET_CLEAN(r) max2837_regs_dirty &= ~(1UL<<r)
#define MAX2837_REG_SET_DIRTY(r) max2837_regs_dirty |= (1UL<<r)
/* Initialize chip. */
extern void max2837_init(void);
/* Read a register via SPI. Save a copy to memory and return
* value. Mark clean. */
extern uint16_t max2837_reg_read(uint8_t r);
/* Write value to register via SPI and save a copy to memory. Mark
* clean. */
extern void max2837_reg_write(uint8_t r, uint16_t v);
/* Read all registers from chip and copy to memory. Mark all clean. */
extern void max2837_regs_read(void);
/* Write all dirty registers via SPI from memory. Mark all clean. Some
* operations require registers to be written in a certain order. Use
* provided routines for those operations. */
extern void max2837_regs_commit(void);
#endif // __MAX2837_H

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/* -*- mode: c -*- */
#ifndef __MAX2837_REGS_DEF
#define __MAX2837_REGS_DEF
/* Generate static inline accessors that operate on the global
* regs. Done this way to (1) allow defs to be scraped out and used
* elsewhere, e.g. in scripts, (2) to avoid dealing with endian
* (structs). This may be used in firmware, or on host predefined
* register loads. */
/* On set_, register is always set dirty, even if nothing
* changed. This makes sure that write that have side effects,
* e.g. frequency setting, are not skipped. */
/* n=name, r=regnum, o=offset (bits from LSB), l=length (bits) */
#define __MREG__(n,r,o,l) \
static inline uint16_t get_##n(void) { \
return (max2837_regs[r] >> o) & ((1<<l)-1); \
} \
static inline void set_##n(uint16_t v) { \
max2837_regs[r] &= ~(((1<<l)-1)<<(o-l+1)); \
max2837_regs[r] |= ((v&((1<<l)-1))<<(o-l+1)); \
MAX2837_REG_SET_DIRTY(r); \
}
/* REG 0 */
__MREG__(MAX2837_LNA_EN, 0,0,1)
__MREG__(MAX2837_Mixer_EN, 0,1,1)
__MREG__(MAX2837_RxLO_EN, 0,2,1)
__MREG__(MAX2837_Lbias, 0,4,2)
#define MAX2837_Lbias_LOWEST 0
#define MAX2837_Lbias_NOMINAL 2
#define MAX2837_Lbias_HIGHEST 3
__MREG__(MAX2837_Mbias, 0,6,2)
#define MAX2837_Mbias_LOWEST 0
#define MAX2837_Mbias_NOMINAL 2
#define MAX2837_Mbias_HIGHEST 3
__MREG__(MAX2837_buf, 0,8,2)
#define MAX2837_buf_LOWEST 0
#define MAX2837_buf_NOMINAL 2
#define MAX2837_buf_HIGHEST 3
__MREG__(MAX2837_LNAband, 0,9,1)
#define MAX2837_LNAband_2_4 0 // 2.3-2.5 GHz
#define MAX2837_LNAband_2_6 1 // 2.5-2.7 GHz
/* REG 1 */
__MREG__(MAX2837_LNAtune, 1,0,1)
#define MAX2837_LNAtune_NOMINAL 0
#define MAX2837_LNAtune_DOWN 1
__MREG__(MAX2837_LNAde_Q,1,1,1)
#define MAX2837_LNAde_Q_NOMINAL 0
#define MAX2837_LNAde_Q_2DB 1
__MREG__(MAX2837_LNAgain,1,4,3)
#define MAX2837_LNAgain_MAX 0b000 // Pad in 8dB steps, bits reversed
#define MAX2837_LNAgain_M8 0b100
#define MAX2837_LNAgain_M16 0b010
#define MAX2837_LNAgain_M24 0b110
#define MAX2837_LNAgain_M32 0b001
#define MAX2837_LNAgain_M40 0b111
__MREG__(MAX2837_iqerr_trim,1,9,5)
// 0b00000 = +4.0 degree phase error
// 0b01111 = 0.0
// 0b11111 = -4.0
/* REG 2 */
__MREG__(MAX2837_LPF_EN,2,0,1)
__MREG__(MAX2837_TxBB_EN,2,1,1)
__MREG__(MAX2837_ModeCtrl,2,3,2)
#define MAX2837_ModeCtrl_RxCalibration 0
#define MAX2837_ModeCtrl_RxLPF 1
#define MAX2837_ModeCtrl_TxLPF 2
#define MAX2837_ModeCtrl_LPFTrim 3
__MREG__(MAX2837_FT,2,7,4)
#define MAX2837_FT_1_75M 0
#define MAX2837_FT_2_5M 1
#define MAX2837_FT_3_5M 2
#define MAX2837_FT_5M 3
#define MAX2837_FT_5_5M 4
#define MAX2837_FT_6M 5
#define MAX2837_FT_7M 6
#define MAX2837_FT_8M 7
#define MAX2837_FT_9M 8
#define MAX2837_FT_10M 9
#define MAX2837_FT_12M 10
#define MAX2837_FT_14M 11
#define MAX2837_FT_15M 12
#define MAX2837_FT_20M 13
#define MAX2837_FT_24M 14
#define MAX2837_FT_28M 15
__MREG__(MAX2837_dF,2,9,2)
#define MAX2837_dF_M10 0b00 // -10%
#define MAX2837_dF_NOMINAL 0b01
#define MAX2837_dF_10 0b11 // +10%
/* REG 3 */
__MREG__(MAX2837_PT_SPI,3,3,4) // slowest=1111 fastest=0000 nom=1001
__MREG__(MAX2837_Bqd,3,6,3) // MSB doubles bias current, lower 2 25% each
__MREG__(MAX2837_TxRPCM,3,9,3) // 000=1.00V, 0.05V steps, 111 not allowed
/* REG 4 */
__MREG__(MAX2837_RP,4,1,2) // 20% steps, 00=lowest, 11=highest
__MREG__(MAX2837_TxBuff,4,3,2) // 25% steps, 00=lowest, 11=highest
__MREG__(MAX2837_VGA_EN,4,4,1)
__MREG__(MAX2837_VGAMUX_enable,4,5,1)
__MREG__(MAX2837_BUFF_Curr,4,7,2) // 250uA + 125uA steps
__MREG__(MAX2837_BUFF_VCM,4,9,2) // VGA common mode
#define MAX2837_BUFF_VCM_0_9 0 // 0.9V
#define MAX2837_BUFF_VCM_1_0 1 // 1.0V
#define MAX2837_BUFF_VCM_1_1 2 // 1.1V
#define MAX2837_BUFF_VCM_1_25 3 // 1.25V
/* REG 5 */
__MREG__(MAX2837_VGA,5,4,5) // max=00000, attenuation in 2dB steps
__MREG__(MAX2837_sel_In1_In2,5,5,1)
#define MAX2837_sel_In1_In2_RXVGA 0
#define MAX2837_sel_In1_In2_TXAM 1
__MREG__(MAX2837_turbo15n20,5,6,1)
__MREG__(MAX2837_VGA_Curr,5,8,2) // 01=default, 00=-33%, 10=+33%, 11=+67%
__MREG__(MAX2837_fuse_arm,5,9,1)
/* REG 6 */
__MREG__(MAX2837_RSSI_EN,6,6,1) // enable RSSI
__MREG__(MAX2837_RSSI_MUX,6,7,1)
#define MAX2837_RSSI_MUX_RSSI 0
#define MAX2837_RSSI_MUX_TEMP 1
__MREG__(MAX2837_RSSI_MODE,6,8,1) // set to override RXHP pin
__MREG__(MAX2837_LPF_MODE_SEL,6,9,1) // set to enable mode in reg 2 ModeCtrl
/* REG 7 is R/O */
// D4:0 ts_adc (temp sensor)
// D9:5 zeros or test outputs
/* REG 8 */
__MREG__(MAX2837_LNAgain_SPI_EN,8,0,1) // set to override pin control of LNA
__MREG__(MAX2837_VGAgain_SPI_EN,8,1,0) // set to override pin control of VGA
__MREG__(MAX2837_EN_Bias_Trim,8,2,1) // route bias current to bondpad
__MREG__(MAX2837_BIAS_TRIM_SPI,8,7,3) // down=00000, up=11111, nom=10000
__MREG__(MAX2837_BIAS_TRIM_CNTRL,8,8,1) // enable BIAS_TRIM_SPI value
__MREG__(MAX2837_RX_IQERR_SPI_EN,8,9,1) // ???
/* REG 9 */
__MREG__(MAX2837_ts_adc_trigger,9,0,1) // temp sensor trigger (one shot)
__MREG__(MAX2837_ts_en,9,1,1) // temp sensor enable (before trigger)
__MREG__(MAX2837_LPFtrim_SPI_EN,9,2,1)
__MREG__(MAX2837_DOUT_DRVH,9,3,1)
#define MAX2837_DOUT_DRVH_1X 0
#define MAX2837_DOUT_DRVH_4X 1
__MREG__(MAX2837_DOUT_PU,9,4,1) // set to enable CMOS PU (default), else OD
__MREG__(MAX2837_DOUT_SEL,9,7,3)
#define MAX2837_DOUT_SEL_SPI 0 // default, SPI comm
#define MAX2837_DOUT_SEL_PLL_LOCK_DETECT 1
#define MAX2837_DOUT_SEL_VAS_TEST_OUT 2
#define MAX2837_DOUT_SEL_HPFSM_TEST_OUT 3
#define MAX2837_DOUT_SEL_LOGEN_TRIM_OUT 4
#define MAX2837_DOUT_SEL_RX_FUSE_GASKET 5
#define MAX2837_DOUT_SEL_TX_FUSE_GASKET 6
#define MAX2837_DOUT_SEL_ZERO 7
__MREG__(MAX2837_fuse_sh,9,8,1) // ???
__MREG__(MAX2837_fuse_burn_gkt,9,9,1) // enable (don't)
/* REG 10 */
__MREG__(MAX2837_TXCAL_GAIN,10,2,2) // 00=default, steps of +10dB
__MREG__(MAX2837_TXCAL_V2I_FILT,10,5,3) // 000=+12%, 111=-16%, 011=default
__MREG__(MAX2837_TX_BIAS_ADJ,10,7,2) // 00=-10%, 01=default, 10=+10%, 11=+20%
/* REG 11 */
__MREG__(MAX2837_AMD_SPI_EN,11,0,1) // enable AM detector
__MREG__(MAX2837_TXMXR_V2I_GAIN,11,4,4) // 0000=max, steps of -0.5dB
/* REG 12 */
__MREG__(MAX2837_HPC_10M,12,1,2) // steps of 0.4uS (0.0-1.2)
__MREG__(MAX2837_HPC_10M_GAIN,12,3,2) // steps of 0.4uS (0.0-1.2)
__MREG__(MAX2837_HPC_600K,12,6,3) // steps of 0.8uS (0.0-4.8), 7=stay 1
__MREG__(MAX2837_HPC_600K_GAIN,12,9,3) // steps of 0.8uS (0.0-4.8), 7=stay 1
/* REG 13 */
__MREG__(MAX2837_HPC_100K,13,1,2) // steps of 3.2uS (0.0-9.6)
__MREG__(MAX2837_HPC_100K_GAIN,13,3,2) // steps of 3.2uS (0.0-9.6)
__MREG__(MAX2837_HPC_30K,13,5,2) // steps of 3.2uS (0.0-9.6)
__MREG__(MAX2837_HPC_30K_GAIN,13,7,2) // steps of 3.2uS (0.0-9.6)
__MREG__(MAX2837_HPC_1K,13,9,2) // steps of 3.2uS (0.0-9.6)
/* REG 14 */
__MREG__(MAX2837_HPC_1K_GAIN,14,1,2) // steps of 3.2uS (0.0-9.6)
__MREG__(MAX2837_HPC_DELAY,14,3,2) // steps of 0.2uS (0.0-0.6)
__MREG__(MAX2837_HPC_STOP,14,5,2)
#define MAX2837_STOP_100 0
#define MAX2837_STOP_1K 1
#define MAX2837_STOP_30K 2
#define MAX2837_STOP_100K 3
__MREG__(MAX2837_HPC_STOP_M2,14,7,2)
#define MAX2837_STOP_M2_1K 0
#define MAX2837_STOP_M2_30K 1
#define MAX2837_STOP_M2_100K 2
#define MAX2837_STOP_M2_600K 3
__MREG__(MAX2837_HPC_RXGAIN_EN,14,8,1) // RXVGA HPFSM re-triggered by B7 & B6
__MREG__(MAX2837_HPC_MODE,14,9,1) // use RXHP
/* REG 15 */
__MREG__(MAX2837_HPC_DIVH,15,0,1)
#define MAX2837_HPC_DIVH_20M 0
#define MAX2837_HPC_DIVH_40M 1
__MREG__(MAX2837_HPC_TST,15,5,5) // filter test modes ... see doc
__MREG__(MAX2837_HPC_SEQ_BYP,15,6,1) // set to bypass programmed sequence
__MREG__(MAX2837_DOUT_CSB_SEL,15,7,1) // set to tri state DOUT when CSB high
/* REG 16 */
__MREG__(MAX2837_EN_SPI,16,0,1) // enable overall chip
__MREG__(MAX2837_CAL_SPI,16,1,1) // enable calibration mode
__MREG__(MAX2837_LOGEN_SPI_EN,16,2,1) // ???
__MREG__(MAX2837_SYN_SPI_EN,16,3,1) // enable synthesizer
__MREG__(MAX2837_VAS_SPI_EN,16,4,1) // enable VCO autoselect
__MREG__(MAX2837_PADRV_SPI_EN,16,5,1) // enable power amp
__MREG__(MAX2837_PADAC_SPI_EN,16,6,1) // enable power amp bias DAC always
__MREG__(MAX2837_PADAC_TX_EN,16,7,1) // enable power amp bias only if TX pin
__MREG__(MAX2837_TXMX_SPI_EN,16,8,1) // enable TX mixer
__MREG__(MAX2837_TXLO_SPI_EN,16,9,1) // enable TX LO
/* REG 17 */
__MREG__(MAX2837_SYN_FRAC_LO,17,9,10)
/* REG 18 */
__MREG__(MAX2837_SYN_FRAC_HI,18,9,10)
/* REG 19 */
__MREG__(MAX2837_SYN_INT,19,7,8)
__MREG__(MAX2837_LOGEN_BSW,19,9,2)
#define MAX2837_LOGEN_BSW_2_3 0 // 2300 - <2400 MHz
#define MAX2837_LOGEN_BSW_2_4 1 // 2400 - <2500 MHz
#define MAX2837_LOGEN_BSW_2_5 2 // 2500 - <2600 MHz
#define MAX2837_LOGEN_BSW_2_6 3 // 2600 - <2700 MHz
/* REG 20 */
__MREG__(MAX2837_SYN_MODE,20,0,1)
#define MAX2837_SYN_MODE_INTEGER 0
#define MAX2837_SYN_MODE_FRACTIONAL 1
__MREG__(MAX2837_SYN_DIV,20,2,2)
#define MAX2837_SYN_DIV_1 0
#define MAX2837_SYN_DIV_2 1
#define MAX2837_SYN_DIV_4 2
#define MAX2837_SYN_DIV_8 3
__MREG__(MAX2837_SYN_CURRENT_,20,4,2)
#define MAX2837_SYN_CURRENT_3_2_DIFF 0 // 3.2mA differential
#define MAX2837_SYN_CURRENT_1_6_DIFF 1 // 1.6mA differential
#define MAX2837_SYN_CURRENT_1_6_SINGLE 2 // 1.6mA single-ended
#define MAX2837_SYN_CURRENT_0_8_SINGLE 3 // 0.8mA single-ended
__MREG__(MAX2837_SYN_CLOCKOUT_DRIVE,20,5,1)
#define MAX2837_SYN_CLOCKOUT_DRIVE_1X 0
#define MAX2837_SYN_CLOCKOUT_DRIVE_4X 1
__MREG__(MAX2837_SYN_TURBO_EN,20,6,1) // ???
__MREG__(MAX2837_SYN_BIAS_SPI,20,7,1) // Use trim value below
__MREG__(MAX2837_SYN_BIAS_TRIM,20,9,2) // 00=max 10=default 11=min
/* REG 21 */
__MREG__(MAX2837_SYN_CP_COMMON_MODE_EN,21,0,1)
__MREG__(MAX2837_SYN_PRESCALER_BIAS_BOOST,21,1,1) // 0=default 1=+20%
__MREG__(MAX2837_SYN_CP_BETA_EN,21,2,0)
__MREG__(MAX2837_SYN_SD_CLOCK_SEL,21,3,1)
#define MAX2837_SYN_SD_CLOCK_PFD 0 // from PFD reset
#define MAX2837_SYN_SD_CLOCK_PRE 1 // from prescaler
__MREG__(MAX2837_SYN_CP_PULSE_WIDTH_ADJ,21,4,1) // 0=default 1=-20%
__MREG__(MAX2837_SYN_CP_LIN_CUR,21,6,2) // +3% per step
__MREG__(MAX2837_SYN_TEST_OUT,21,9,3) // high bit locks CP in test mode
#define MAX2837_SYN_TEST_LOCK_DETECT 0b000
#define MAX2837_SYN_TEST_SD 0b001
#define MAX2837_SYN_TEST_REF_DIV 0b010
#define MAX2837_SYN_TEST_MAIN_DIV 0b011
#define MAX2837_SYN_TEST_CP_LO_Z_LOCK_DETECT 0b100
#define MAX2837_SYN_TEST_CP_SOURCE_SD 0b101
#define MAX2837_SYN_TEST_CP_SINK_REF_DIV 0b110
#define MAX2837_SYN_TEST_CP_HI_Z_MAIN_DIV 0b111
__MREG__(MAX2837_VAS_EN,22,0,1)
__MREG__(MAX2837_VAS_RELOCK_SEL,22,1,1)
#define MAX2837_VAS_RELOCK_SELECTED 0
#define MAX2837_VAS_RELOCK_PRESENT 1
__MREG__(MAX2837_VAS_DIV,22,4,3)
#define MAX2837_VAS_CLK_DIV_8 0
#define MAX2837_VAS_CLK_DIV_9 1
#define MAX2837_VAS_CLK_DIV_10 2
#define MAX2837_VAS_CLK_DIV_11 3
#define MAX2837_VAS_CLK_DIV_12 4
#define MAX2837_VAS_CLK_DIV_13 5
#define MAX2837_VAS_CLK_DIV_14 6
#define MAX2837_VAS_CLK_DIV_2 7
__MREG__(MAX2837_VAS_DLY,22,6,2) // Delay = Txtal * VAS_DIV * VAS_DLY * 7
#define MAX2837_VAS_DLY_16
#define MAX2837_VAS_DLY_32
#define MAX2837_VAS_DLY_64
#define MAX2837_VAS_DLY_128
__MREG__(MAX2837_VAS_TRIG_EN,22,7,1)
__MREG__(MAX2837_VAS_ADE,22,8,1)
__MREG__(MAX2837_VAS_ADL_SPI,22,9,1)
/* REG 23 */
__MREG__(MAX2837_VAS_SPI,23,4,5) // subband selection default is center (15)
__MREG__(MAX2837_XTAL_BIAS,23,6,2)
#define MAX2837_XTAL_BIAS_240_20 0 // 240uA for 20MHz
#define MAX2837_XTAL_BIAS_420_20 1
#define MAX2837_XTAL_BIAS_600_40 2
#define MAX2837_XTAL_BIAS_780_40 3
__MREG__(MAX2837_XTAL_E2C_BIAS,23,7,1)
#define MAX2837_XTAL_E2C_BIAS_360 0 // uA
#define MAX2837_XTAL_E2C_BIAS_540 1
__MREG__(MAX2837_VAS_SE,23,8,1)
#define MAX2837_VAS_SE_DIFF 0
#define MAX2837_VAS_SE_SINGLE 1
__MREG__(MAX2837_VCO_SPI_EN,23,9,1) // set to override mode
/* REG 24 */
__MREG__(MAX2837_XTAL_TUNE,24,6,7) // 0=max 127=min freq
__MREG__(MAX2837_CLKOUT_EN,24,7,1)
__MREG__(MAX2837_CLKOUT_DIV,24,8,1)
#define MAX2837_CLKOUT_DIV_1 0
#define MAX2837_CLKOUT_DIV_2 1
__MREG__(MAX2837_XTAL_EN,24,9,1) // set to override mode
//__MREG__(MAX2837_,,,)
#define MAX2837_
//__MREG__(MAX2837_,,,)
//#define MAX2837_
#endif // __MAX2837_REGS_DEF