Yamaha MCX-A10 Service Manual page 30

MCX-A10/MCX-SP10
Pin No. Symbol
29 INTR0
45 nLDEV
31 nRD
32 nWR
34 nDATACS
9 EESK
10 EECS
7 EEDO
8 EEDI
3-5 IOS0-IOS2
6 ENEEP
127, 128 XTAL1
XTAL2
1, 33, 44, 62, VDD
77, 98, 110,
120
11, 16 AVDD
24, 39,52, GND
57, 67, 72,
93, 103, 108,
117
13, 19 AGND
21 LBK
20 nLNK
28 nCNTRL
47 X25out
111 TXEN100
119 CRS100
125 RX_DV
112 COL100
113-116 TXD0-TXD3
30
Name Buffer Type
nLocal Device
nRead Strobe
nWrite Strobe
nData Path
Chip Select I with pullup **
EEPROM Clock
EEPROM Select
EEPROM Data Out
EEPROM Data In I with pulldown **
I/O Base I with pullup **
Enable EEPROM I with pullup **
Crystal 1
Crystal 2
Power
Analog Power
Ground
Analog Ground
Loopback
nLink Status I with pullup **
nControl
X25 Out
Transit Enable100 Mbps
Carrier Sense 100 Mbps I with pulldown **
Receive Data Valid I with pulldown **
Collisio Detect 100 Mbps I with pulldown **
Transmit Data
O24 Interrupt output signal. This signal is used to cause interrup-
tion to the host on an event of a certain status.
Caution: The selection bits which have been determined by
the INT SEL 1-0 bit value in the configuration register are no
more required but retained to keep interchangeability when
the FEAST family is changed.
O16 Output signal. This active low output is indicated when AEN
is low and A4-A15 decoding to LAN91C111 is programmed
to a higher byte of the base address register. n LDEV is a
linked decode of an unlatched address and AEN signal.
IS ** Input signal. This signal is used in the asynchronous bus in-
terface.
IS ** Input signal. This signal is used in the asynchronous bus in-
terface.
Input signal. When n DATACS is in the low state, the data bus
can be accessed regardless of selection of AEN, A1 - A15
value and bank selection register. n DATACS provides inter-
face to or from 32 bits of LAN9C111at one time.
O4 Output signal. It is used when 4 _ sec clock transfers the data
to or from the serial EEPROM.
O4 Output signal. It is chip select of serial EEPROM, used when
forming and selecting the command of serial EEPROM.
O4 Output signal. It is linked with D1 input (EEDI) of serial
EEPROM.
Input signal. It is linked with DO output (EEDO) of serial
EEPROM.
Input signal. It is possible to connect the external switch to
make a selection among predefined EEPROM structures.
Input signal. It enables LAN91C111 to access serial EEPROM
(in the high or open state). If EEPROM is not connected to
LAN91C111, it must be grounded.
Iclk An external 25MHz crystal oscillator must be connected to
these pins. When using the TTL clock, it should be connected
to XTAL1 and XTAL2 should remain open.
+3.3V power supply pin.
+3.3V analog power supply pin.
Ground pin.
Analog ground pin.
O4 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).
O12 General purpose control signal.
O12 25MHz output signal to external PHY.
O12 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.
O12 Output signal. 4 bit data is transmitted to MII PHY.
Function