ADM7008
Interface Description
2.2 Pin Description
Note:
For those pins, which have multiple functions, pin name is separated by slash (“/”).
If not specified, all signals are default to digital signals.
Please refer to section ‘1.5.3 Pin Type Descriptions’ for an explanation of pin
abbreviations.
2.2.1 Twisted Pair Interface, 32 pins
Pin #
Pin Name
Type Description
123, 5, 7, 17
19, 29, 31, 41
124, 4, 8, 16
20, 28, 32, 40
126, 2, 10, 14
22, 26, 34, 38
127, 1, 11, 23
23, 25, 35, 37
TXP[0:7]
O,
Twisted Pair Transmit Output Positive.
Analog
O,
TXN[0:7]
RXP[0:7]
RXN[0:7]
Twisted Pair Transmit Output Negative.
Analog
I, Analog Twisted Pair Receive Input Positive.
I, Analog Twisted Pair Receive Input Negative.
2.2.2 Ground and Power, 20 pins
Pin #
125, 3, 9, 15,
21, 27, 33, 39
118, 128, 12,
24, 36
Pin Name
Type Description
GNDRT
Analog Analog Ground Pad
Ground
VCCAD
VCCA2
Analog Analog 3.3V Power
Power
122, 6, 18, 30,
42
Analog Analog 1.8V Power
Power
120
GNDRCV
VCCPLL2
Analog Analog Ground used by Clock Generator module
Ground
121
Analog Analog 1.8V Power used by Clock Generator module
Power
2.2.3 Mode Setting
Pin #
Pin Name
RSMODE1
Type Description
43
I, PD RMII and SMII/SS_SMII mode select signal. Dedicated input
provided by ADM7008 to determine the interface:
0: SMII or SS_SMII interface (See CRSDV_P6 power on setting
for more detail)
1: RMII interface
2.2.4 Clock Input Select
Pin #
Pin Name
Type
Description
48
REFCLK_SEL
I, PD
XI/XO and REFCLK clock select signal. Dedicated input
provided by ADM7008 to determine the clock source for
ADM7008.
0: ADM7008 will use XI/XO as clock source for internal clock
generator. In this mode, REFCLK (pin 112) will output 50M
clock in RMII mode (RSMODE1 is set to 1) and 125M clock
in either SMII or SS_SMII mode (RSMODE1 is set to 0) \
1: ADM7008 will use the input of REFCLK (pin 112) as the
ADMtek Inc.
2-2
ETC [ ETC ]
