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Si5324: update to free run from XA/XB, with CKIN1 having priority.

This commit is contained in:
whitequark 2016-11-01 16:01:24 +00:00
parent 0c1a76d668
commit a6ae254796
1 changed files with 9 additions and 5 deletions
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14
artiq/gateware/targets/kc705_drtio_satellite.py
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@ -18,18 +18,22 @@ def get_i2c_program(sys_clk_freq):
# into registers. They have to be mapped; see the datasheet.
# DSPLLsim reports the logical parameters in the design summary, not
# the physical register values (but those are present separately).
N1_HS = 0 # 4
NC1_LS = 19 # 20
N2_HS = 1 # 5
N2_LS = 511 # 512
N31 = 31 # 32
N1_HS = 6 # 10
NC1_LS = 7 # 8
N2_HS = 6 # 10
N2_LS = 20111 # 20112
N31 = 2513 # 2514
N32 = 4596 # 4597
i2c_sequence = [
# PCA9548: select channel 7
[(0x74 << 1), 1 << 7],
# Si5324: configure
[(0x68 << 1), 0, 0b01010000], # FREE_RUN=1
[(0x68 << 1), 1, 0b11100100], # CK_PRIOR2=1 CK_PRIOR1=0
[(0x68 << 1), 2, 0b0010 | (4 << 4)], # BWSEL=4
[(0x68 << 1), 3, 0b0101 | 0x10], # SQ_ICAL=1
[(0x68 << 1), 4, 0b10010010], # AUTOSEL_REG=b10
[(0x68 << 1), 6, 0x07], # SFOUT1_REG=b111
[(0x68 << 1), 25, (N1_HS << 5 ) & 0xff],
[(0x68 << 1), 31, (NC1_LS >> 16) & 0xff],