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phaser: tweak slacks and errors, identify trf

This commit is contained in:
Robert Jördens 2020-09-24 08:38:30 +00:00
parent 03d5f985f8
commit 6e6480ec21
2 changed files with 28 additions and 18 deletions

View File

@ -167,11 +167,11 @@ class Phaser:
delay(20*us) # slack delay(20*us) # slack
hw_rev = self.read8(PHASER_ADDR_HW_REV) hw_rev = self.read8(PHASER_ADDR_HW_REV)
delay(.1*ms) # slack delay(20*us) # slack
is_baseband = hw_rev & PHASER_HW_REV_VARIANT is_baseband = hw_rev & PHASER_HW_REV_VARIANT
gw_rev = self.read8(PHASER_ADDR_GW_REV) gw_rev = self.read8(PHASER_ADDR_GW_REV)
delay(.1*ms) # slack delay(20*us) # slack
# allow a few errors during startup and alignment since boot # allow a few errors during startup and alignment since boot
if self.get_crc_err() > 20: if self.get_crc_err() > 20:
@ -185,11 +185,11 @@ class Phaser:
self.set_fan_mu(0) self.set_fan_mu(0)
# bring everything out of reset, keep tx off # bring everything out of reset, keep tx off
self.set_cfg(clk_sel=self.clk_sel, dac_txena=0) self.set_cfg(clk_sel=self.clk_sel, dac_txena=0)
delay(.1*ms) # slack
# TODO: crossing dac_clk (125 MHz) edges with sync_dly (0-7 ns) # TODO: crossing dac_clk (125 MHz) edges with sync_dly (0-7 ns)
# should change the optimal fifo_offset by 4 # should change the optimal fifo_offset by 4
self.set_sync_dly(4) self.set_sync_dly(4)
delay(.1*ms) # slack
# 4 wire SPI, sif4_enable # 4 wire SPI, sif4_enable
self.dac_write(0x02, 0x0080) self.dac_write(0x02, 0x0080)
@ -207,7 +207,7 @@ class Phaser:
for data in self.dac_mmap: for data in self.dac_mmap:
self.dac_write(data >> 16, data) self.dac_write(data >> 16, data)
delay(.1*ms) delay(20*us)
patterns = [ patterns = [
[0xf05a, 0x05af, 0x5af0, 0xaf05], # test channel/iq/byte/nibble [0xf05a, 0x05af, 0x5af0, 0xaf05], # test channel/iq/byte/nibble
@ -219,16 +219,16 @@ class Phaser:
# either side) and no need to tune at runtime. # either side) and no need to tune at runtime.
# Parity provides another level of safety. # Parity provides another level of safety.
for i in range(len(patterns)): for i in range(len(patterns)):
delay(.5*ms) delay(.2*ms)
errors = self.dac_iotest(patterns[i]) errors = self.dac_iotest(patterns[i])
if errors: if errors:
raise ValueError("DAC iotest failure") raise ValueError("DAC iotest failure")
delay(10*ms) # let it settle delay(2*ms) # let it settle
lvolt = self.dac_read(0x18) & 7 lvolt = self.dac_read(0x18) & 7
delay(.1*ms) delay(.1*ms)
if lvolt < 2 or lvolt > 5: if lvolt < 2 or lvolt > 5:
raise ValueError("DAC PLL tuning voltage out of bounds") raise ValueError("DAC PLL lock failed, check clocking")
# self.dac_write(0x20, 0x0000) # stop fifo sync # self.dac_write(0x20, 0x0000) # stop fifo sync
# alarm = self.get_sta() & 1 # alarm = self.get_sta() & 1
@ -270,15 +270,24 @@ class Phaser:
abs(data_i - data_q) > 2): abs(data_i - data_q) > 2):
raise ValueError("DUC+oscillator phase/amplitude test failed") raise ValueError("DUC+oscillator phase/amplitude test failed")
if not is_baseband: if is_baseband:
for data in channel.trf_mmap: continue
channel.trf_write(data)
delay(.1*ms) if channel.trf_read(0) & 0x7f != 0x68:
delay(1*ms) # lock raise ValueError("TRF identification failed")
lock_detect = self.get_sta() & (PHASER_STA_TRF0_LD << ch) delay(.1*ms)
delay(.1*ms)
if not lock_detect: delay(.2*ms)
raise ValueError("TRF quadrature upconverter lock failure") for data in channel.trf_mmap:
channel.trf_write(data)
delay(2*ms) # lock
if not (self.get_sta() & (PHASER_STA_TRF0_LD << ch)):
raise ValueError("TRF lock failure")
delay(.1*ms)
if channel.trf_read(0) & 0x1000:
raise ValueError("TRF R_SAT_ERR")
delay(.1*ms)
self.set_cfg(clk_sel=self.clk_sel) # txena self.set_cfg(clk_sel=self.clk_sel) # txena
@ -799,7 +808,8 @@ class PhaserChannel:
self.phaser.spi_cfg(select=0, div=34, end=1, length=1) self.phaser.spi_cfg(select=0, div=34, end=1, length=1)
self.phaser.spi_write(0) self.phaser.spi_write(0)
delay((1 + 1)*34*4*ns) delay((1 + 1)*34*4*ns)
return self.trf_write(0x00000008, readback=True) return self.trf_write(0x00000008 | (cnt_mux_sel << 27),
readback=True)
class PhaserOscillator: class PhaserOscillator:

View File

@ -37,7 +37,7 @@ class TRF372017:
ld_ana_prec = 0 # 2b ld_ana_prec = 0 # 2b
cp_tristate = 0 # 2b cp_tristate = 0 # 2b
speedup = 0 speedup = 0
ld_dig_prec = 0 ld_dig_prec = 1
en_dith = 1 en_dith = 1
mod_ord = 2 # 3rd order, 2b mod_ord = 2 # 3rd order, 2b
dith_sel = 0 dith_sel = 0