932S890C
RD890 SYSTEM CLOCK FOR AMD-BASED SERVERS
IDT
RD890 SYSTEM CLOCK FOR AMD-BASED SERVERS
3
932S890C
REV D 052011
Pin Descriptions (cont.)
PIN #
PIN TYPE
D ESCRIPTION
37
SRC0C_LPRS
OUT
Complement clock of low pow er differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm
series resistor needed)
38
SRC0T_LPRS
OUT
True clock of low power differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm series
resistor needed)
39
SRC1C_LPRS
OUT
Complement clock of low pow er differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm
series resistor needed)
40
SRC1T_LPRS
OUT
True clock of low power differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm series
resistor needed)
41
VDDSR C_3.3
PWR
Supply for SRC core and outputs, 3.3V nominal
42
GNDSRC
GND
Ground pin for the SRC outputs
43
SRC2C_LPRS
OUT
Complement clock of low pow er differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm
series resistor needed)
44
SRC2T_LPRS
OUT
True clock of low power differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm series
resistor needed)
45
SRC3C_LPRS
OUT
Complement clock of low pow er differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm
series resistor needed)
46
SRC3T_LPRS
OUT
True clock of low power differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm series
resistor needed)
47
SRC4C_LPRS
OUT
Complement clock of low pow er differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm
series resistor needed)
48
SRC4T_LPRS
OUT
True clock of low power differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm series
resistor needed)
49
GNDSRC
GND
Ground pin for the SRC outputs
50
VDDSR C_3.3
PWR
Supply for SRC core and outputs, 3.3V nominal
51
SRC5C_LPRS
OUT
Complement clock of low pow er differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm
series resistor needed)
52
SRC5T_LPRS
OUT
True clock of low power differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm series
resistor needed)
53
SRC6C_LPRS
OUT
Complement clock of low pow er differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm
series resistor needed)
54
SRC6T_LPRS
OUT
True clock of low power differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm series
resistor needed)
55
SRC7C_LPRS
OUT
Complement clock of low pow er differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm
series resistor needed)
56
SRC7T_LPRS
OUT
True clock of low power differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm series
resistor needed)
57
SRC8C_LPRS
OUT
Complement clock of low pow er differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm
series resistor needed)
58
SRC8T_LPRS
OUT
True clock of low power differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm series
resistor needed)
59
VDDSR C_3.3
PWR
Supply for SRC core and outputs, 3.3V nominal
60
GNDSRC
GND
Ground pin for the SRC outputs
61
SRC9C_LPRS
OUT
Complement clock of low pow er differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm
series resistor needed)
62
SRC9T_LPRS
OUT
True clock of low power differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm series
resistor needed)
63
SRC10C_LPR S
OUT
Complement clock of low pow er differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm
series resistor needed)
64
SRC10T_LPRS
OUT
True clock of low power differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm series
resistor needed)
65
SRC11C_LPR S
OUT
Complement clock of low pow er differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm
series resistor needed)
66
SRC11T_LPRS
OUT
True clock of low power differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm series
resistor needed)
67
GNDSRC
GND
Ground pin for the SRC outputs
68
VDDSR C_3.3
PWR
Supply for SRC core and outputs, 3.3V nominal
69
SRC12C_LPR S
OUT
Complement clock of low pow er differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm
series resistor needed)
70
SRC12T_LPRS
OUT
True clock of low power differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm series
resistor needed)
71
SRC13C_LPR S
OUT
Complement clock of low pow er differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm
series resistor needed)
72
SRC13T_LPRS
OUT
True clock of low power differential SRC clock pair. (no 50 ohm shunt resistor to GND and no 33 ohm series
resistor needed)