IDTCV152 Просмотр технического описания (PDF) - Integrated Device Technology
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IDTCV152 Datasheet PDF : 15 Pages
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IDTCV152
PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR
PIN DESCRIPTION
Pin Name
Type
XTAL_IN
I
XTAL_OUT
O
REF[1:0]
O
PCI[3:0]
O
PCIF[2:0]
O
USB48
O
CPU[4:0], CPU#[4:0]
O
SRC[4:1], SRC#[4:1]
O
FSB/TEST_MODE
I
FSC/TEST_SEL
I
Pin #
52
51
54, 55
3, 4, 5, 6
9, 10, 11
13
31,32, 36, 37, 39,
40, 42, 43, 45, 46
18, 19, 21-24, 26, 27
49
56
FSA
I
48
IREF
I
33
VTT_PWRGND#/PD
I
17
SDA
I/O
30
SCL
I
29
COMMERCIAL TEMPERATURE RANGE
Description
14.318 XTAL input
14.318 XTAL output
14.318 MHz
33.33MHz PCI CLK
33.33MHz PCI free running CLK
48MHz
CPU differential CLK
SRC differential clk
Frequency select. When in test mode, 0 = CLK Hi-Z, 1 = CLK REF/N
Frequency select. Select test mode if pulled to 2V and above when VTT_PWRGND#
assertion.
Frequency select, sampled on VTT_PWRGND# assertion
Reference current for differential outputs
3.3V LVTTL input, a level-sensitive strobe used to latch the FSA, FSB, FSC/TEST_SEL
inputs. After VTT_PWRGND# assertion, becomes a real-time input for asserting power down
(active HIGH).
SMBus data
SMBus clock
3
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