50
HCD-CZ1/NAS-CZ1
• IC Pin Function Description
ETHER BOARD IC502 ML7201TB (ETHERNET CONTROLLER)
Pin No.
Pin Name
I/O
Pin Description
1
PIOC0
O
Serial control data output to the D/A converter
2
PIOC1
O
Power down signal output to the Ethernet interface
3
PIOC2
O
Reset signal output to the Ethernet interface
4
TEST2
I
Test mode setting terminal
5
PLLVDD
-
Power supply terminal (+2.5V)
6
PLLGND
-
Ground terminal
7
PLLMODE
I
PLL mode setting terminal
8 to 14
XD0 to XD6
I/O
Two-way data bus with the SD-RAM and flash memory
15
TEST1
I
Test mode setting terminal
16
XD7
I/O
Two-way data bus with the SD-RAM and flash memory
17, 18
XD15, 14
I/O
Two-way data bus with the SD-RAM and flash memory
19
GND
-
Ground terminal
20 to 23
XD13 to XD10
I/O
Two-way data bus with the SD-RAM and flash memory
24
VDD_IO
-
Power supply terminal (+3.3V)
25, 26
XD9, XD8
I/O
Two-way data bus with the SD-RAM and flash memory
27
XA16
O
Address signal output terminal Not used
28
GND
-
Ground terminal
29, 30
XA17, XA18
O
Address signal output terminal Not used
31 to 34
XA23 to XA20
O
Address signal output terminal Not used
35
XA19
O
Address signal output to the SD-RAM and flash memory
36
VDD_IO
-
Power supply terminal (+3.3V)
37 to 42
XA10 to XA5
O
Address signal output to the SD-RAM and flash memory
43
VDDCORE
-
Power supply terminal (+2.5V)
44, 45
XA15, XA14
O
Address signal output to the flash memory
46
GND
-
Ground terminal
46
XA13
O
Address signal output to the flash memory
46
XA12
O
Address signal output to the SD-RAM and flash memory
49
GND
-
Ground terminal
50
XA11
O
Address signal output to the SD-RAM and flash memory
51
VDD_IO
-
Power supply terminal (+3.3V)
52
XA0
O
Address signal output terminal Not used
53 to 56
XA1 to XA4
O
Address signal output to the SD-RAM and flash memory
57
XOEN
O
Output enable signal output to the flash memory
58
XWEN
O
Write enable signal output to the SD-RAM and flash memory
I/O
Not used
O
Chip select signal output to the flash memory
O
Chip select signal output terminal Not used
O
Wait signal output terminal Not used
O
Byte select signal output for external memory Not used
-
Ground terminal
-
Power supply terminal (+3.3V)
O
Column address strobe signal output to the SD-RAM
O
Row address strobe signal output to the SD-RAM
O
Serial data transfer clock signal output to the SD-RAM
70
XSDCSN
O
Chip select signal output to the SD-RAM
71
XSDCKE
O
Clock enable signal output to the SD-RAM
72
XDQM1
O
Write mask signal output to the SD-RAM (upper byte)
73
XDQM0
O
Write mask signal output to the SD-RAM (lower byte)
74
CRS_N
I
Career sense signal input terminal
75
COL_N
I
Collision detection signal input terminal
76 to 79
TXD3 to TXD0
O
Ethernet transmit data output terminal
80
TXEN_N
O
Ethernet transmit data enable signal output terminal
81
VDD_IO
-
Power supply terminal (+3.3V)
82
TXCLK_N
I/O
Ethernet transmit data transfer clock signal input/output terminal
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