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hmc7043: make fpga fabric clocks lvds 

2 V common and 1.9 Vpp swing
is brutal to the banks (HP 1.8V AMC and RT 1.8V RTM)
This commit is contained in:
Robert Jördens 2018-06-15 14:24:31 +00:00
parent f385add8b1
commit edfae3c4ba
1 changed files with 18 additions and 18 deletions
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36
artiq/firmware/libboard_artiq/hmc830_7043.rs
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@ -163,22 +163,22 @@ pub mod hmc7043 {
const SYSREF_DIV: u32 = 128; // 9.375MHz
const HMC_SYSREF_DIV: u32 = SYSREF_DIV*8; // 1.171875MHz (must be <= 4MHz)
// enabled, divider, analog phase shift, digital phase shift
const OUTPUT_CONFIG: [(bool, u32, u8, u8); 14] = [
(true, DAC_CLK_DIV, 0x0, 0x0), // 0: DAC2_CLK
(true, SYSREF_DIV, 0x0, 0x0), // 1: DAC2_SYSREF
(true, DAC_CLK_DIV, 0x0, 0x0), // 2: DAC1_CLK
(true, SYSREF_DIV, 0x0, 0x0), // 3: DAC1_SYSREF
(false, 0, 0x0, 0x0), // 4: ADC2_CLK
(false, 0, 0x0, 0x0), // 5: ADC2_SYSREF
(false, 0, 0x0, 0x0), // 6: GTP_CLK2
(true, SYSREF_DIV, 0x0, 0x0), // 7: FPGA_DAC_SYSREF
(true, FPGA_CLK_DIV, 0x0, 0x0), // 8: GTP_CLK1
(false, 0, 0x0, 0x0), // 9: AMC_MASTER_AUX_CLK
(false, 0, 0x0, 0x0), // 10: RTM_MASTER_AUX_CLK
(false, 0, 0x0, 0x0), // 11: FPGA_ADC_SYSREF
(false, 0, 0x0, 0x0), // 12: ADC1_CLK
(false, 0, 0x0, 0x0), // 13: ADC1_SYSREF
// enabled, divider, analog phase shift, digital phase shift, output config
const OUTPUT_CONFIG: [(bool, u32, u8, u8, u8); 14] = [
(true, DAC_CLK_DIV, 0x0, 0x0, 0x08), // 0: DAC2_CLK
(true, SYSREF_DIV, 0x0, 0x0, 0x08), // 1: DAC2_SYSREF
(true, DAC_CLK_DIV, 0x0, 0x0, 0x08), // 2: DAC1_CLK
(true, SYSREF_DIV, 0x0, 0x0, 0x08), // 3: DAC1_SYSREF
(false, 0, 0x0, 0x0, 0x08), // 4: ADC2_CLK
(false, 0, 0x0, 0x0, 0x08), // 5: ADC2_SYSREF
(false, 0, 0x0, 0x0, 0x08), // 6: GTP_CLK2
(true, SYSREF_DIV, 0x0, 0x0, 0x10), // 7: FPGA_DAC_SYSREF, LVDS
(true, FPGA_CLK_DIV, 0x0, 0x0, 0x08), // 8: GTP_CLK1
(false, 0, 0x0, 0x0, 0x10), // 9: AMC_MASTER_AUX_CLK
(false, 0, 0x0, 0x0, 0x10), // 10: RTM_MASTER_AUX_CLK
(false, 0, 0x0, 0x0, 0x10), // 11: FPGA_ADC_SYSREF, LVDS
(false, 0, 0x0, 0x0, 0x08), // 12: ADC1_CLK
(false, 0, 0x0, 0x0, 0x08), // 13: ADC1_SYSREF
];
@ -275,7 +275,7 @@ pub mod hmc7043 {
for channel in 0..14 {
let channel_base = 0xc8 + 0x0a*(channel as u16);
let (enabled, divider, aphase, dphase) = OUTPUT_CONFIG[channel];
let (enabled, divider, aphase, dphase, outcfg) = OUTPUT_CONFIG[channel];
if enabled {
// Only clock channels need to be high-performance
@ -295,7 +295,7 @@ pub mod hmc7043 {
}
else { write(channel_base + 0x7, 0x01); }
write(channel_base + 0x8, 0x08)
write(channel_base + 0x8, outcfg)
}
write(0x1, 0x4a); // Reset dividers and FSMs