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ML6691 Datasheet(PDF) 2 Page - Micro Linear Corporation |
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ML6691 Datasheet(HTML) 2 Page - Micro Linear Corporation |
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2 / 10 page  ML6691 2 PIN CONFIGURATION ML6691 44-PIN PLCC (Q44) TSM4 TSM3 TSM2 TSM1 TSM0 SD RSM4 RSM3 RSM2 RSM1 RSM0 TXER TXD3 TXD2 TXD1 TXD0 CRS COL RXD3 RXD2 RXD1 RXD0 18 19 20 21 22 23 24 7 8 9 10 11 12 13 14 15 16 17 65 4 3 2 39 38 37 36 35 34 33 32 31 30 29 144 25 43 26 42 27 41 28 40 PIN# NAME FUNCTION 1,21 VCC Positive 5 volt supply. 2,3,4, AD[4:0] Local PHY address. These 5 inputs set 43,44 the address to which the local physical layer responds. When an address match is detected, the CS output is asserted. 5 TXCLK Transmit clock output. Continuous 25MHz clock provides the timing reference for the transfer of TXEN, TXER, and TXD[3:0] from the MAC. TXCLK is generated from the TXC input. 6 TXEN Transmit enable input. A logic high enables the transmit section of the ML6691. This signal indicates the MAC is transmitting nibble-wide data. TXEN is synchronous to TXCLK. 7 TXER Transmit error input. When TXER is high , while TXEN is asserted, the ML6691 will insert an “H” symbol in the data stream. TXER is synchronous to TXCLK. 8-11 TXD[3:0] Transmit nibble data inputs. Nibble- wide data from the MAC. For data transmission TXEN must be asserted. TXD[0] is the least significant bit. TXD[3:0] is synchronous to TXCLK. PIN DESCRIPTION 12 CRS Carrier sense output. A logic high indicates that either the transmit or receive medium is non-idle. CRS is deasserted when both transmit and receive are idle. 13 COL Collision detect output. A logic high indicates a collision (simultaneous transmit and receive in half duplex mode). 14-17 RXD[3:0] Receive nibble data outputs. Nibble- wide data for transmission to the MAC. RXD[0] is the least significant bit. RXD[3:0] is synchronous to RXCLK. 18 RXDV Receive data valid output. A logic high indicates the ML6691 is presenting valid nibble-wide data. RXDV shall remain asserted from the first recovered nibble of the frame through the final recovered nibble. RXDV will be de-asserted prior to the first RXCLK that follows the final nibble. RXDV is synchronous to RXCLK. 19 RXER Receive error output. Active high, indicates that a coding error was detected. RXER is synchronous to RXCLK. PIN# NAME FUNCTION |
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