Yamaha MCX 1000 - MusicCAST - Digital Audio Server, Service Manual, Page: 54 / 111

MCX-1000
54
MCX-1000
IC501 : LAN91C111 (MAIN P.C.B.)
Ethernet
Pin No.
Name Symbol
Buffer
Function
TQFP Type
24,39,52, Ground GND
57,67,72,
93,103,
108,117
13,19 Analog Ground AGND
21 Loopback LBK O4
20 nLink Status nLNK I with
pullup**
28 nControl nCNTRL O12
47 X25 Out X25out O12
111 Transit TXEN100 O12
Enable 100 Mbps
119 Carrier Sense CRS100 I with
100 Mbps pulldown**
125 Receive Data RX_DV I with
Valid pulldown**
112 Collisio COL100 i with
Detect 100 Mbps pulldown**
113-116 Transmit Data TXD0- O12
TXD3
109 Transmit Clock TX25 I with
pullup**
118 Receive Clock RX25 I with
pullup**
121-124 Receive Data RXD0- I with
RXD3 pullup**
25 Management MDI I with
Data Input pulldown**
26 Management MDO O4
Data Output
27 Management MCLK O4
Output
126 Receive Error RX_ER I with
pulldown**
Ground pin.
Analog ground pin.
Output pin. It is effective when the LOOP bit is set (TCR bit 1).
Input signal. The general purpose port is used to transmit the LINK
status (EPHSR bit 14).
General purpose control signal.
25MHz output signal to external PHY.
Output signal to MII PHY. It enables 100Mbps transmission.
Input signal from MII PHY. Wave form of bucket reception to be used
when waiting for reception and restoring.
Input signal from MII PHY. Wave form for receiving effective data,
used to form reception data.
Input signal from MII PHY. This is an input pin for collision detection.
Output signal. 4 bit data is transmitted to MII PHY.
Input signal. The clock input from MII is transmitted. 4 bit rate clock
(25 MHz for 100 Mbps and 2.5 Mbps for 10 Mbps)
Input signal. The clock input received from MII PHY. 4 bit rate clock
(25 MHz for 100 Mbps or 2.5 Mbps for 10 Mbps).
Input signal. 4 bits of the receiving data from MII PHY.
MII management data input signal.
MII management data output signal.
MII management clock.
For the input signal which indicates an error of the code detected by
PHY. It is used to remove the bucket being received by LAN91C111.
The error reported by this event has the same meaning as a faulty
CRC. (Receive Status Word 13)