{"id":2533,"date":"2010-02-18T14:49:54","date_gmt":"2010-02-18T05:49:54","guid":{"rendered":"http:\/\/yasu2.prosou.nu\/blog\/index.php\/2010\/02\/18\/decoding_tlp_max_payload_size\/"},"modified":"2010-02-18T14:49:54","modified_gmt":"2010-02-18T05:49:54","slug":"decoding_tlp_max_payload_size","status":"publish","type":"post","link":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/2010\/02\/18\/2533\/","title":{"rendered":"Decoding TLP max payload size of Xilinx PCIe Core"},"content":{"rendered":"

While I’m writing a DMAC on my Virtex-5 PCIe card, I’ve found that the “MAX_PAYLOAD_SIZE” register has only 3 bits, while the size will be between 128 and 4096. And here’s the answer:
\n3’b000 128B
\n3’b001 256B
\n3’b010 512B
\n3’b011 1024B
\n3’b100 2048B
\n3’b101 4096B
\n3’b110 Reserved
\n3’b111 Reserved
\n(from Xilinx application note XAPP1052 documentation).
\nand now I can continue!<\/p>\n","protected":false},"excerpt":{"rendered":"

While I’m writing a DMAC on my Virtex-5 PCIe card, I’ve found that the “MAX_PAYLOAD_SIZE&#82 … “Decoding TLP max payload size of Xilinx PCIe Core” \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"activitypub_content_warning":"","activitypub_content_visibility":"","activitypub_max_image_attachments":4,"activitypub_interaction_policy_quote":"anyone","activitypub_status":"","footnotes":""},"categories":[11,4],"tags":[],"class_list":["post-2533","post","type-post","status-publish","format-standard","hentry","category-11","category-4"],"_links":{"self":[{"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/posts\/2533","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/comments?post=2533"}],"version-history":[{"count":0,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/posts\/2533\/revisions"}],"wp:attachment":[{"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/media?parent=2533"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/categories?post=2533"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yasu2.prosou.nu\/blog\/index.php\/wp-json\/wp\/v2\/tags?post=2533"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}