FreeCalypso > hg > freecalypso-schem2
comparison venus/src/MCL @ 36:c1256c8757c3
eliminate R209 and tie Iota VLMEM directly to UPR
We already eliminated R210 (VLMEM pull-down option) earlier, because
our simplified LCD power supply and reset line wiring is incompatible
with 1.8V MEMIF. But with VLMEM always needing to be high, a pull-up
resistor offers no advantage over a direct tie to UPR, so let's
eliminate the superfluous resistor.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Mon, 22 Nov 2021 19:19:59 +0000 |
| parents | 971c05950675 |
| children | 3becdb3b6dce |
comparison
equal
deleted
inserted
replaced
| 35:971c05950675 | 36:c1256c8757c3 |
|---|---|
| 785 # pull-up of Iota nTESTRESET to UPR | 785 # pull-up of Iota nTESTRESET to UPR |
| 786 hier=mob.core.bb.abb.R208 | 786 hier=mob.core.bb.abb.R208 |
| 787 footprint=0402 | 787 footprint=0402 |
| 788 npins=2 | 788 npins=2 |
| 789 | 789 |
| 790 R209: | |
| 791 # pull-up of Iota VLMEM to UPR | |
| 792 hier=mob.core.bb.abb.R209 | |
| 793 footprint=0402 | |
| 794 npins=2 | |
| 795 | |
| 796 R211: | 790 R211: |
| 797 # part of the voodoo "internal" VCXO circuit | 791 # part of the voodoo "internal" VCXO circuit |
| 798 hier=mob.core.rf.Rita_vcxo.vcxo_passive.R211 | 792 hier=mob.core.rf.Rita_vcxo.vcxo_passive.R211 |
| 799 footprint=0402 | 793 footprint=0402 |
| 800 npins=2 | 794 npins=2 |
