IDTCV193 データシートの表示（PDF） - Integrated Device Technology
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IDTCV193 Datasheet PDF : 21 Pages
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IDTCV193
PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR
COMMERCIAL TEMPERATURE RANGE
PIN DESCRIPTION, CONTINUED
Pin #
Name
Type
Description
43
SRCC7/CR#_E
I/O
SRC clock. SRC differential clock output enable, control SRC6, 0 = enable. Mode selected by SMBus control
register. Default is SRC7.
44
SRCT7/CR#_F
I/O
SRC clock. SRC differential clock output enable, control SRC8, 0 = enable. Mode selected by SMBus control
register. Default is SRC7.
45
VDD_SRC_IO
PWR
1.05 ~ 3.3V
46
SRCC8/CPU_ ITPC
OUT
SRC clock. CPU clock. Mode selected by pin7.
47
SRCT8/CPU_ ITPT
OUT
SRC clock. CPU clock. Mode selected by pin7.
48
Sel_SRC1_25_24.576
OUT
Power on latch, Select pin 17, 18 Mode, see pin 48 Function Table.
49
VDD_CPU_IO
PWR
1.05 ~ 3.3V
50
CPUC1
OUT
Differential output clock
51
CPUT1
OUT
Differential output clock
52
VSS_CPU
GND
GND
53
CPUC0
OUT
Differential output clock
54
CPUT0
OUT
Differential output clock
55
VDD_CPU
PWR
3.3V
56
CKPWRGD/PD#
IN
CKPWRGD power good, active LOW, used to latch FSA,B,C, ITP_EN, TME, and SRC5_EN , active HIGH.
After, becomes power down, LOW active.
57
FS_B/TestMode
IN
Frequency Select at CKPWRGD assertion. Test Mode selection, see TEST_MODE selection table.q
58
VSS_REF
GND
GND
59
XTAL_OUT
OUT
XTAL out
60
XTAL_IN
IN
XTAL in
61
VDD_REF
PWR
3.3V
62
REF/FS_C/TestSel
I/O
14.318MHz. Frequency Select at CKPWRGD assertion. Selects test mode if pulled above 2V at CKPWRGD
assertion.
63
SDA
I/O
SMBus data
64
SCL
IN
SMBus clock
TEST MODE SELECTION(1)
If TEST_SEL sampled above 2V at CKPWRGD active LOW
Test_Mode
CPU
SRC
PCI/F
REF
DOT_96/DOT_SSC
1
REF/N
REF/N
REF/N
REF
REF/N
0
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
NOTE:
1. Once test clock operation has been invoked, TEST_MODE pin will select between the Hi-Z and REF/N, with VIH_FS and VIL_FS thresholds.
USB
REF/N
Hi-Z
FREQUENCY SELECTION
FSC, B, A
CPU
SRC[7:0]
101
100
100
001
133
100
011
166
100
010
200
100
000
266
100
100
333
100
110
400
100
111
Reserve
100
PCI
USB
DOT
33.3
48
96
33.3
48
96
33.3
48
96
33.3
48
96
33.3
48
96
33.3
48
96
33.3
48
96
33.3
48
96
IDT CONFIDENTIAL
4
REF
14.318
14.318
14.318
14.318
14.318
14.318
14.318
14.318
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