ics1523 Integrated Device Technology, ics1523 Datasheet - Page 4

• Manufacturer Part Number: ics1523
• Description: Video Clock Synthesizer With I?c Programmable Delay
• Manufacturer: Integrated Device Technology

MDS ICS1523 Z
Section 2 Pin Descriptions
Note 1: These LVTTL inputs are 5 V-tolerant.
Note 2: Connect to ground if unused.
NO.
PIN
10
11
12
13
14
15
17
18
19
20
21
22
23
24
16
1
2
3
4
5
6
7
8
9
PIN NAME
VDDD
VSSD
SDA
SCL
COAST
EXTFB
HSYNC
EXTFIL
XFILRET
VDDA
VSSA
OSC
I
LOCK/REF
FUNC
CLK/2
CLK
VDDQ
VSSQ
CLK–
CLK+
CLK/2–
CLK/2+
IREF
2
CADR
Integrated Device Technology, Inc.
SSTL
SSTL
SSTL
SSTL
OD OUT
OD OUT
POWER
POWER
POWER
POWER
POWER
POWER
IN/OUT
TYPE
IN
IN
IN
IN
IN
IN
IN
IN
IN
_
_
_
_
3 OUT
3 OUT
3 OUT
3 OUT
DESCRIPTION
Digital supply
Digital ground
Serial data
Serial clock
Charge pump enable
External feedback in
Horizontal sync
External filter
External filter return
Analog supply
Analog ground
Oscillator
I
Lock / Reference
Function output
Pixel clock/2 output
Pixel clock output
Output driver supply
Output driver ground
Pixel clock outputs
Pixel clock/2 outputs
Reference current
2
C address
4
Tech Support: www.idt.com/go/clockhelp
Video Clock Synthesizer with I
COMMENTS
3.3 V to digital sections
I
I
Enables\Disables the charge pump
External feedback divider input
Clock input to PLL
External loop filter
External loop filter return
3.3 V for analog circuitry
Ground for analog circuitry
Input from oscillator or other high
frequency input
Chip I
REF (Schmitt conditioned HSYNC) or
PLL lock output
Output selectable between a 4 clock
wide, active high HSYNC-like output,
and a Schmitt-trigger filtered HSYNC
Output driver for half speed clock
Output driver for full speed clock
3.3 V to output drivers
Ground for output drivers
PECL driver for full-speed clock
2
2
PECL driver for half-speed clock
Reference current for PECL outputs
C-bus Data
C-bus Clock
2
Low = 4Dh read, 4Ch write
High = 4Fh read, 4Eh write
C address select
2
C Programmable Delay
Revision 052407
ICS1523
Notes
1 & 2
1
1
1
1
1