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TNETX3150 数据表(PDF) 54 Page - Texas Instruments |
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TNETX3150 数据表(HTML) 54 Page - Texas Instruments |
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54 / 113 page  TNETX3150/TNETX3150A ThunderSWITCH™ 15-PORT 10-/100-MBIT/S ETHERNET™ SWITCH SPWS027F – FEBRUARY 1997 – REVISED SEPTEMBER 1997 54 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 test registers DIATST register at 0x00DD BIT 7 6 5 4 3 2 1 0 Reserved DPWRAP INTWRAP Reserved Initial Values After Reset X X X X 0 0 0 0 BIT NAME FUNCTION 7–4 Reserved Reserved 3 DPWRAP Duplex wrap mode. When DPWRAP = 1, all ports are forced into full-duplex mode and all ports can receive frames they transmit. This enables external wrap testing at the PHY. 2–1 INTWRAP Internal wrap mode. Ports 1–14 internally wrap back according to the following two-bit coding (INTWRAP bit 2 and bit 1, respectively). 00 No internal wrapping 01 All ports internally wrapped except port 00 (uplink) 10 All ports internally wrapped except port 02 11 All ports internally wrapped except port 14 (The port that is not wrapped (00, 02, or 14) should be used to inject and observe test data frames from the internally wrapped ports.) 0 Reserved port N statistics at 0x80*N + 0x8000 through 0x80*N + 0x807F (N = port number in hex) +7 +6 +5 +4 +3 +2 +1 +0 ADDRESS Good RX frames RX octets 0x80*N + 0x8000 +0x00–0x07 Multicast RX frames Broadcast RX frames 0x80*N + 0x8000 +0x08–0x0F RX align/code errors RX CRC errors 0x80*N + 0x8000 +0x10–0x17 RX jabbers Oversize RX frames 0x80*N + 0x8000 +0x18–0x1F RX fragments Undersize RX frames 0x80*N + 0x8000 +0x20–0x27 Frames 65–127 Frame 64 0x80*N + 0x8000 +0x28–0x2F Frames 256–511 Frames 128–255 0x80*N + 0x8000 +0x30–0x37 Frames 1024–1518 Frames 512–1023 0x80*N + 0x8000 +0x38–0x3F SQE test errors Net octets 0x80*N + 0x8000 +0x40–0x47 Good TX frames TX octets 0x80*N + 0x8000 +0x48–0x4F Multi-collision TX frames Single-collision TX frames 0x80*N + 0x8000 +0x50–0x57 Deferred TX frames Carrier sense errors 0x80*N + 0x8000 +0x58–0x5F Excessive collisions Late collisions 0x80*N + 0x8000 +0x60–0x67 Multicast TX frames Broadcast TX frames 0x80*N + 0x8000 +0x68–0x6F TX data errors† Filtered RX frames 0x80*N + 0x8000 +0x70–0x77 Address changes/mismatches Address duplications 0x80*N + 0x8000 +0x78–0x7F † The operation of this counter is controlled by the STMAP bit in the system control register. |
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