PI6C110EV データシートの表示（PDF） - Pericom Semiconductor
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PI6C110EV Datasheet PDF : 15 Pages
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PI6C110E
Clock Solution for 133 MHz
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Pin Description Table
Pin
Type Qty. P/S Symbol
Description
1
I/O
1 3.3
REF/SEL2
Normally 14.318 MHz reference output. During power up this pin is
sampled as SEL2, clock bit 2. Internally pulled down w/100K Ohm.
3
I
1 3.3 XTAL_IN 14.318 MHz crystal input
4
O 1 3.3 XTAL_OUT 14.318 MHz crystal output
7, 8
O 2 3.3 3V66 [0-1] 66 MHz
11, 12, 13, 15,
16, 18, 19, 20
O
8 3.3 PCI [0-7] PCI outputs
25, 26
O 1 3.3 48 MHz [0-1] 48 MHz output
28, 29
30
31
I
2 3.3 SEL [0-1] LVTTL level frequency select inputs, internal pullup
I/O 1 3.3
SDATA I2C compatible SDATA, internal pullup
I
1 3.3 SCLOCK I2C compatible SCLOCK, internal pullup
32
I
1 3.3 PWRDWN# LVTTL level Power Down control input, active low
34, 36, 37, 39,
40, 42, 43, 45, 46
O
9
3.3
DCLK, SDRAM and DCLK outputs. 100/133 MHz depending on SEL [0-2].
SDRAM [0-7] SDRAM [0-7] can be turned off through I2C, but not DCLK.
49, 50, 52
O 3 2.5 CPU [0-2] Host Bus Clock output. 66/100/133 MHz depending on SEL [0-2]
54, 55
O 2 2.5 APIC [0-1] 33 MHz APIC clock, synchronous to PCI clock
2, 9, 10, 21, 27,
33, 38, 44
PWR
8
3.3
VDD3.3 3.3V Power Supply
5, 6, 14, 17, 24,
35, 41, 47
GND
8
N/A
VSS3.3
3.3V Ground
51, 53
48, 56
22
23
PWR 2 2.5
GND 2 N/A
PWR 1 3.3
GND 1 N/A
VDD2.5
VSS2.5
VDDA
VSSA
2.5V Power Supply
2.5V Ground
3.3V Core Power Supply
3.3V Core Ground
Frequency Select Function Table
SEL2 SEL1 SEL0
Function
X
0
0 Tri-State
X
0
1 Test
0
1
0 CPU = 66 MHz, SDRAM = 100 MHz
0
1
1 CPU = 100 MHz, SDRAM = 100 MHz
1
1
0 CPU = 133 MHz, SDRAM = 133 MHz
1
1
1 CPU = 133 MHz, SDRAM = 100 MHz
2
PS8410
08/11/99
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