gs9005a Gennum Corporation, gs9005a Datasheet - Page 4

• Manufacturer Part Number: gs9005a
• Description: Serial Digital Receiver Corporation
• Manufacturer: Gennum Corporation

520 - 28 - 11
SERIAL
DATA OUT
(SD0)
SERIAL
CLOCK OUT
(SCK)
GS9005 & GS9005A PIN DESCRIPTIONS
PIN NO.
2
3
4
5,6
7
8,9
10
11
12
13
14
15
16
17
1
ƒ/2 EN
V
OEM
A/D
AGC CAP
V
V
DDI/DDI
V
SDI/SDI
LOOP FILT
R
R
SYMBOL
R
R
EE1
CC1
CC2
EE3
VCO2
VCO3
VCO0
VCO1
Fig.1 Waveforms
t D
Input
Input
Input
Input
Input
Input
Input
Input
Input
Output
TYPE
50%
Analog/Digital Select. TTL compatible input used to select the input signal source. A logic HIGH routes the
Equalizer inputs (pins 8 and 9) to the PLL and a logic LOW routes the Direct Digital inputs (pins 5 and 6)
to the PLL.
AGC Capacitor. Connection for the AGC capacitor.
Power Supply. Most negative power supply connection. (Equalizer)
Power Supply. Most positive power supply connection. (Equalizer)
Direct Data Inputs (true and inverse). Pseudo-ECL, differential serial data inputs. These are selected
when the A/D input (pin 1) is at logic LOW and are self biased to 1.2 volts below V
directly driven from true ECL drivers when V
Power Supply. Most positive power supply connection. ( Phase detector, A/D select, carrier detect).
Serial Data Inputs (true and inverse). Differential analog serial data inputs. Inputs must be AC
coupled and may be driven single ended. These inputs are selected when the A/D input (pin 1) is
logic HIGH.
ƒ/2 Enable-TTL compatible input used to enable the divide by 2 function.
Power Supply. Most negative power supply connection. (VCO, Mux, Standard Select)
Loop Filter. Node for connecting the loop filter components.
VCO Resistor 0. Analog current input used to set the centre frequency of the VCO when the two
Standard Select bits (pins 20 and 21) are set to logic 0,0. A resistor is connected from this pin to V
VCO Resistor 1. Analog current input used to set the centre frequency of the VCO when Standard
Select bit 0 (pin 20) is set HIGH and bit 1 (pin 21) is set LOW. A resistor is connected from this pin to V
VCO Resistor 2. Analog current input used to set the centre frequency of the VCO when Standard
Select bit 0 (pin 20) is set LOW and bit 1 (pin 21) is set HIGH. A resistor is connected from this pin to V
Output Eye Monitor Analog voltage representing the serial bit stream after equalization but before reslicing.
VCO Resistor 3. Analog current input used to set the centre frequency of the VCO when the two
Standard Select bits (pins 20 and 21) are set HIGH. A resistor is connected from this pin to V
t D
50%
4
DESCRIPTION
ƒ/2 EN
V
DDI
DDI
V
SDI
SDI
EE3
CC2
EE
= -5V and V
10
11
LOOP R
FILT
5
6
7
8
9
V
12 13
CC1
4
Fig. 2 GS9005A Pin Connections
VCO0
V
3
EE1
CC
= 0 V.
14
R
AGC
CAP
2
VCO1
TOP VIEW
GS9005A
15
R
A/D
VCO2
16
28
SSI
OEM R
17
27
V
EE2
VCO3
CC
18
. They may be
26
V
V
CC4
CC3
25
24
23
22
21
20
19
EE
.
SD0
SD0
SC0
SC0
SS1
SS0
CD
EE
.
EE
EE
.
.