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[top] fix JTAG reset default value
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input is low-active, so the default is high
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stnolting committed Feb 3, 2024
1 parent b12f202 commit 39a436d
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Showing 3 changed files with 3 additions and 3 deletions.
2 changes: 1 addition & 1 deletion docs/datasheet/soc.adoc
Original file line number Diff line number Diff line change
Expand Up @@ -81,7 +81,7 @@ Some interfaces (like the TWI and the 1-Wire bus) require tri-state drivers in t
| `clk_i` | 1 | in | none | global clock line, all registers triggering on rising edge
| `rstn_i` | 1 | in | none | global reset, asynchronous, **low-active**
5+^| **JTAG Access Port for <<_on_chip_debugger_ocd>>**
| `jtag_trst_i` | 1 | in | `'L'` | TAP reset, low-active (optional)
| `jtag_trst_i` | 1 | in | `'H'` | TAP reset, low-active (optional)
| `jtag_tck_i` | 1 | in | `'L'` | serial clock
| `jtag_tdi_i` | 1 | in | `'L'` | serial data input
| `jtag_tdo_o` | 1 | out | - | serial data output
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2 changes: 1 addition & 1 deletion rtl/core/neorv32_package.vhd
Original file line number Diff line number Diff line change
Expand Up @@ -846,7 +846,7 @@ package neorv32_package is
clk_i : in std_ulogic;
rstn_i : in std_ulogic;
-- JTAG on-chip debugger interface --
jtag_trst_i : in std_ulogic := 'L';
jtag_trst_i : in std_ulogic := 'H';
jtag_tck_i : in std_ulogic := 'L';
jtag_tdi_i : in std_ulogic := 'L';
jtag_tdo_o : out std_ulogic;
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2 changes: 1 addition & 1 deletion rtl/core/neorv32_top.vhd
Original file line number Diff line number Diff line change
Expand Up @@ -157,7 +157,7 @@ entity neorv32_top is
rstn_i : in std_ulogic; -- global reset, low-active, async

-- JTAG on-chip debugger interface (available if ON_CHIP_DEBUGGER_EN = true) --
jtag_trst_i : in std_ulogic := 'L'; -- low-active TAP reset (optional)
jtag_trst_i : in std_ulogic := 'H'; -- low-active TAP reset (optional)
jtag_tck_i : in std_ulogic := 'L'; -- serial clock
jtag_tdi_i : in std_ulogic := 'L'; -- serial data input
jtag_tdo_o : out std_ulogic; -- serial data output
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