ics9db102 Integrated Device Technology, ics9db102 Datasheet - Page 2

• Manufacturer Part Number: ics9db102
• Description: 2 Output Pci Express Buffer With Clkreq Function
• Manufacturer: Integrated Device Technology

Pin Configuration
Pin Description
IDT
Note:
Pins preceeded by '**' have internal 120K ohm pull down resistors
PIN #
ICS9DB102
2 Output PCI Express* Buffer with CLKREQ# Function
TM
**CLKREQ0# 4
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
/ICS
PCIEXC0 8
CLK_INC 3
PCIEXT0 7
SMBDAT 10
CLK_INT 2
Note: Pins preceeded by '**' have internal
PLL_BW 1
TM
2 Output Express* Buffer with CLKREQ# Function
PLL_BW
CLK_INT
CLK_INC
**CLKREQ0#
VDD
GND
PCIEXT0
PCIEXC0
VDD
SMBDAT
SMBCLK
VDD
PCIEXC1
PCIEXT1
GND
VDD
**CLKREQ1#
IREF
GNDA
VDDA
GND 6
VDD 5
VDD 9
20-pin SSOP & TSSOP
120K ohm pull down resistors
PIN NAME
PIN TYPE
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
POWER
POWER
POWER
POWER
POWER
POWER
POWER
POWER
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
20 VDDA
19 GNDA
18 IREF
17 **CLKREQ1#
16 VDD
15 GND
14 PCIEXT1
13 PCIEXC1
12 VDD
11 SMBCLK
I/O
3.3V input for selecting PLL Band Width
0 = low, 1= high
"True" reference clock input.
"Complementary" reference clock input.
Output enable for SRC/PCI Express output pair '0'
0 = enabled, 1 = tri-stated
Power supply, nominal 3.3V
Ground pin.
True clock of differential PCI_Express pair.
Complement clock of differential PCI_Express pair.
Power supply, nominal 3.3V
Data pin of SMBUS circuitry, 5V tolerant
Clock pin of SMBUS circuitry, 5V tolerant
Power supply, nominal 3.3V
Complement clock of differential PCI_Express pair.
True clock of differential PCI_Express pair.
Ground pin.
Power supply, nominal 3.3V
Output enable for SRC/PCI Express output pair '1'
0 = enabled, 1 = tri-stated
This pin establishes the reference current for the differential current-
mode output pairs. This pin requires a fixed precision resistor tied to
ground in order to establish the appropriate current. 475 ohms is the
standard value.
Ground pin for the PLL core.
3.3V power for the PLL core.
2
Power Groups
5,9,12,16
VDD
20
20
9
Pin Number
DESCRIPTION
GND
6,15
19
19
6
Analog VDD & GND for PLL core
ICS9DB102
PCI Express Outputs
Description
SMBUS
IREF
REV G 12/14/07