Datasheet KSZ8993 (Microchip) - 10
| Manufacturer | Microchip |
| Description | 3-Port 10/100 Integrated Switch with PHY and Frame Buffer |
| Pages / Page | 35 / 10 — I/O Descriptions. Group. I/O Names. Active Status. Description |
| File Format / Size | PDF / 231 Kb |
| Document Language | English |
I/O Descriptions. Group. I/O Names. Active Status. Description
Model Line for this Datasheet
Text Version of Document
KS8993 Micrel
I/O Descriptions Group I/O Names Active Status Description
PHY RXP[1:3] Analog Differential inputs (receive) for connection to media (transformer or fiber module). RXM[1:3] TXP[1:3] Analog Differential outputs (transmit) for connection to media (transformer or fiber module). TXM[1:3] FXSD[1:3] H Fiber signal detect - connect to fiber signal detect output on fiber module. Tie low for 100TX mode. VREF[1:3] Analog Center tap transformer reference for transmit data. ISET Analog Transmit Current Set. Connecting an external reference resistor to set transmitter output current. This pin connects a 1% 3kΩ resistor if a transformer of turns ratio of 1:1 is used. MII See “Table 2, MII Interconnect” for forward and reverse signal usage. MRXD[0:3] H Four bit wide data bus for receiving MAC frames. MRXDV H Receive data valid. MCRS H Receive carrier sense. MCOL H Receive collision detection. MCOLIN H Collision in (for forward operation only). MRXCLK Clock Receive clock. MTXD[0:3] H Four bit wide data bus for transmitting MAC frames. MTXEN H Transmit enable. MTXER H Transmit error. MTXCLK Clock Transmit clock. SNI MTXD[0] H Serial transmit data. MTXEN H Transmit enable. MTXCLK Clock Transmit clock. MRXD[0] H Serial receive data. MRXDV H Receive carrier sense/data valid. MCOL H Collision detection. MRXCLK Clock Receive clock. IND LED[1:3][0] L Output (after reset). Mode 0: Speed (low = 100/high = 10). Mode 1: Reserved. Mode 2: Collision (toggle = collision during receiving , high = no collision). Mode 3: Speed (low = 100/high = 10). LED[1:3][1] L Output (after reset). Mode 0: Duplex (low = full/high = half). Mode 1: Duplex (low = full/high = half). Mode 2: Duplex (low = full/high = half). Mode 3: Reserved. LED[1:3][2] L Output (after reset). Mode 0: Collision (toggle = collision during receiving , high = no collision). Mode 1: Transmit Activity (toggle during transmission, high = idle). Mode 2: 10/link/act (constant low = link, toggle = act, constant high = no link). Mode 3: Full-Duplex + Collision (constant low = full-duplex, toggle = collision in half. duplex, constant high = half-duplex with no collision). KS8993 10 May 2005
I/O Descriptions Group I/O Names Active Status Description
PHY RXP[1:3] Analog Differential inputs (receive) for connection to media (transformer or fiber module). RXM[1:3] TXP[1:3] Analog Differential outputs (transmit) for connection to media (transformer or fiber module). TXM[1:3] FXSD[1:3] H Fiber signal detect - connect to fiber signal detect output on fiber module. Tie low for 100TX mode. VREF[1:3] Analog Center tap transformer reference for transmit data. ISET Analog Transmit Current Set. Connecting an external reference resistor to set transmitter output current. This pin connects a 1% 3kΩ resistor if a transformer of turns ratio of 1:1 is used. MII See “Table 2, MII Interconnect” for forward and reverse signal usage. MRXD[0:3] H Four bit wide data bus for receiving MAC frames. MRXDV H Receive data valid. MCRS H Receive carrier sense. MCOL H Receive collision detection. MCOLIN H Collision in (for forward operation only). MRXCLK Clock Receive clock. MTXD[0:3] H Four bit wide data bus for transmitting MAC frames. MTXEN H Transmit enable. MTXER H Transmit error. MTXCLK Clock Transmit clock. SNI MTXD[0] H Serial transmit data. MTXEN H Transmit enable. MTXCLK Clock Transmit clock. MRXD[0] H Serial receive data. MRXDV H Receive carrier sense/data valid. MCOL H Collision detection. MRXCLK Clock Receive clock. IND LED[1:3][0] L Output (after reset). Mode 0: Speed (low = 100/high = 10). Mode 1: Reserved. Mode 2: Collision (toggle = collision during receiving , high = no collision). Mode 3: Speed (low = 100/high = 10). LED[1:3][1] L Output (after reset). Mode 0: Duplex (low = full/high = half). Mode 1: Duplex (low = full/high = half). Mode 2: Duplex (low = full/high = half). Mode 3: Reserved. LED[1:3][2] L Output (after reset). Mode 0: Collision (toggle = collision during receiving , high = no collision). Mode 1: Transmit Activity (toggle during transmission, high = idle). Mode 2: 10/link/act (constant low = link, toggle = act, constant high = no link). Mode 3: Full-Duplex + Collision (constant low = full-duplex, toggle = collision in half. duplex, constant high = half-duplex with no collision). KS8993 10 May 2005
