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cxp GW: update docs

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morgan 2025-02-07 11:57:02 +08:00
parent ae98a0fab6
commit 799e96c5ad
1 changed files with 12 additions and 12 deletions
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24
src/gateware/cxp.py
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@ -333,14 +333,14 @@ class CXP_Grabber(Module, AutoCSR):
cdr = ClockDomainsRenamer("cxp_gt_rx")
#
# 32+8(dchar) 4 pixel
# HostRXCore ─────/─────> Stream broadcaster ────> buffer ────> Pixel Core ───/───> Roi engines
# 32+8(dchar) 4 pixel
# HostRXCore ─────/─────> stream broadcaster ────> buffer ────> stream2pixel4x ───/───> Roi engines
#
# that drops the K29.7 and mark eop on the crc word
self.submodules.broadcaster = broadcaster = cdr(Stream_Broadcaster())
self.submodules.buffer = buffer = cdr(Buffer(word_layout_dchar)) # to improve timinig
self.submodules.conv = conv = cdr(Stream2Pixel4x_Converter(res_width, count_width))
self.submodules.buffer = buffer = cdr(Buffer(word_layout_dchar)) # to improve timing
self.submodules.stream2pix = stream2pix = cdr(Stream2Pixel4x(res_width, count_width))
# CRC error counter
self.submodules.crc_reset_ps = crc_reset_ps = PulseSynchronizer("sys", "cxp_gt_rx")
self.comb += crc_reset_ps.i.eq(self.crc_error_reset.re)
@ -349,7 +349,7 @@ class CXP_Grabber(Module, AutoCSR):
crc_error_r = Signal()
self.sync.cxp_gt_rx += [
# to improve timinig
crc_error_r.eq(conv.crc_checker.error),
crc_error_r.eq(stream2pix.crc_checker.error),
If(crc_reset_ps.o,
crc_error_cnt_rx.eq(crc_error_cnt_rx.reset),
@ -363,10 +363,10 @@ class CXP_Grabber(Module, AutoCSR):
self.comb += [
host.rx.source.connect(broadcaster.sink),
broadcaster.sources[0].connect(buffer.sink),
buffer.source.connect(conv.sink),
buffer.source.connect(stream2pix.sink),
]
roi_engines = [cdr(ROI(conv.pixel4x, count_width)) for _ in range(roi_engine_count)]
roi_engines = [cdr(ROI(stream2pix.pixel4x, count_width)) for _ in range(roi_engine_count)]
self.submodules += roi_engines
for n, roi in enumerate(roi_engines):
@ -402,15 +402,15 @@ class CXP_Grabber(Module, AutoCSR):
y_size_rx, y_size_sys = Signal(3*char_width), Signal(3*char_width)
y_pix_rx, y_pix_sys = Signal(res_width), Signal(res_width)
self.sync.cxp_gt_rx += [
If(conv.header_reader.new_line,
If(stream2pix.header_reader.new_line,
new_line_cnt_rx.eq(new_line_cnt_rx + 1),
),
l_size_rx.eq(conv.header_reader.metadata.l_size),
x_size_rx.eq(conv.header_reader.metadata.x_size),
y_size_rx.eq(conv.header_reader.metadata.y_size),
l_size_rx.eq(stream2pix.header_reader.metadata.l_size),
x_size_rx.eq(stream2pix.header_reader.metadata.x_size),
y_size_rx.eq(stream2pix.header_reader.metadata.y_size),
y_pix_rx.eq(conv.pixel4x[0].y),
y_pix_rx.eq(stream2pix.pixel4x[0].y),
]
self.specials += [
MultiReg(new_line_cnt_rx, new_line_cnt_sys),