
COMMERCIALTEMPERATURERANGE
IDTCV137
PROGRAMMABLEFLEXPC CLOCKFORAMDK8PROCESSORATIRS480
3
PIN DESCRIPTION
Pin Name
Type
Pin #
Description
XIN
IN
1
XTAL in
XOUT
OUT
2
XTALout
PCI0
OUT
50
PCI clock
HTT66
OUT
47
66.66 MHz
USB48
OUT
4
48MHz
Turbo1
IN
26
Turbofrequencyselect
CPUC[1:0]
OUT
40, 41, 44, 45
Differentialclock
CPUT[1:0]
SRCC[7:0]
OUT
12, 13, 16, 17, 18, 19,
Differentialclock
SRCT[7:0]
22, 23, 24, 25, 27, 28,
29, 30, 33, 34
IREF
OUT
37
Differentialclockreferencecurrent
REF[0:1]
I/O
53,54
14.318MHz
REF2
OUT
52
14.318MHz
CLKREQ0#
IN
10
SRC OE control, see bytes 3, 4
CLKREQ1#
IN
11
SRC OE control, see bytes 3, 4
SDA
I/O
8
SMBus data
SCL
IN
7
SMBus clock
SEL24/24_48#
IN
9
Latched select input for 24 or 48MHz output. 1 = 24MHz, 0 = 48MHz.
RESET#
OUT,
15
Reset output signal, Open Drain
OD