FIN24AC Fairchild Semiconductor, FIN24AC Datasheet

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FIN24AC

Manufacturer Part Number
FIN24AC
Description
Fin24ac ? ?serdes? 22-bit Bi-directional Serializer/deserializer
Manufacturer
Fairchild Semiconductor
Datasheet

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© 2005 Fairchild Semiconductor Corporation
FIN24AC Rev. 1.0.3
FIN24AC
Features
Applications
Ordering Information
Pb-Free package per JEDEC J-STD-020B. BGA and MLP packages available in tape and reel only.
µSerDes
– Multiple power-down modes
– AC coupling with DC balance
– -90dBm EMI when using CTL in lab conditions
– Minimized shielding
– Minimized EMI filter
– Minimum susceptibility to external interference
– LCD, cell phone, digital camera, portable gaming,
Low power for minimum impact on battery life
100nA in standby mode, 5mA typical operating
conditions
Cable reduction: 25:4 or greater
Bi-directional operation 50:7 reduction or greater
Differential signaling:
Up to 22 bits in either direction
Up to 20MHz parallel interface operation
Voltage translation from 1.65V to 3.6V
Ultra-small and cost-effective packaging
High ESD protection: >8kV HBM
Parallel I/O power supply (V
1.65V to 3.6V
Micro-controller or pixel interfaces
Image sensors
Small displays
Order Number
FIN24ACGFX
FIN24ACMLX
using a near field probe
printer, PDA, video camera, automotive
TM
is a trademark of Fairchild Semiconductor Corporation.
22-Bit Bi-Directional Serializer/Deserializer
Package
Number
BGA042
MLP040
DDP
) range between
Pb-Free
Yes
Yes
42-Ball Ultra Small Scale Ball Grid Array (USS-BGA),
JEDEC MO-195, 3.5mm Wide
40-Terminal Molded Leadless Package (MLP), Quad,
JEDEC MO-220, 6mm Square
General Description
The FIN24AC µSerDes™ is a low-power Serializer/
Deserializer (SerDes) that can help minimize the cost
and power of transferring wide signal paths. Through the
use of serialization, the number of signals transferred
from one point to another can be significantly reduced.
Typical reduction is 4:1 to 6:1 for unidirectional paths.
For bi-directional operation, using half duplex for multiple
sources, it is possible to increase the signal reduction to
close to 10:1. Through the use of differential signaling,
shielding and EMI filters can also be minimized, further
reducing the cost of serialization. The differential signal-
ing is also important for providing a noise-insensitive sig-
nal that can withstand radio and electrical noise sources.
Major reduction in power consumption allows minimal
impact on battery life in ultra-portable applications. A
unique word boundary technique assures that the actual
word boundary is identified when the data is deserial-
ized. This guarantees that each word is correctly aligned
at the deserializer on a word-by-word basis through a
unique sequence of clock and data that is not repeated
except at the word boundary. A single PLL is adequate
for most applications, including bi-directional operation.
Package Description
www.fairchildsemi.com
January 2007
tm

Related parts for FIN24AC

FIN24AC Summary of contents

Page 1

... TM © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 General Description The FIN24AC µSerDes™ low-power Serializer/ Deserializer (SerDes) that can help minimize the cost and power of transferring wide signal paths. Through the use of serialization, the number of signals transferred from one point to another can be significantly reduced. ...

Page 2

... Functional Block Diagram CKREF STROBE DP[21:22] DP[1:20] DP[23:24] CKP S1 S2 DIRI © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 Word PLL 0 Boundary Generator I cksint Serializer Control Serializer oe Deserializer Deserializer cksint Control WORD CK Generator Control Logic DIRO Freq. Direction Control Control oe Power Down Control Figure 1. Block Diagram ...

Page 3

... The DSO/DSI serial port terminals have been arranged such that when one device is rotated 180° to the other device, the serial connections properly align without the need for any traces or cable signals to cross. Other layout orientations may require that traces or cables cross. © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 Number of Terminals Description of Signals ...

Page 4

... Connection Diagrams DP[10] DP[11] DP[12] DP[13] DP[14] DP[15] DP[16] Figure 2. Terminal Assignments for MLP (Top View (Top View) © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 DP[ DDP CKP Pin Assignments DP[9] DP[7] DP[5] B DP[11] DP[10] DP[6] C CKP DP[12] DP[8] D DP[13] DP[14] V DDP E DP[15] DP[16] GND F DP[17] DP[18] DP[21] J DP[19] ...

Page 5

... Control Logic Circuitry The FIN24AC has the ability to be used as a 24-bit Seri- alizer or a 24-bit Deserializer. Pins S1 and S2 must be set to accommodate the clock reference input frequency range of the serializer. Table 1 shows the pin program- ming of these options based on the S1 and S2 control pins ...

Page 6

... No Data Figure 5. Serializer Timing Diagram (CKREF does not equal STROBE) © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 The Phase-Locked Loop (PLL) must receive a stable CKREF signal to achieve lock prior to any valid data being sent. The CKREF signal can be used as the data STROBE signal, provided that data can be ignored during the PLL lock phase ...

Page 7

... CKS0 No Data Figure 6. Serializer Timing Diagram Using Provided Bit Clock (No CKREF) © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 (Continued) A third method of serialization can be accomplished with a free running bit clock on the CKSI signal. This mode is enabled by grounding the CKREF signal and driving the DIRI signal HIGH. ...

Page 8

... Figure 8. Deserializer Timing Diagram (Serializer Source: CKREF does not equal STROBE) © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 When the DIRI signal is asserted LOW, the device is configured as a deserializer. Data is captured on the serial port and deserialized through use of the bit clock sent with the data ...

Page 9

... Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 resistor FIN24AC device is configured as an unidi- rectional serializer, unused data I/O can be treated as unused inputs. If the FIN24AC is hardwired as a deseri- alizer, unused data I/O can be treated as unused out- puts. From Deserializer ...

Page 10

... The output of the PLL is a bit clock that is used to serialize the data. The bit clock is also sent source syn- chronously with the serial data stream. © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 There are two ways to disable the PLL: by entering the Mode 0 state ( detecting a LOW on DS+ both the S1 and S2 signals ...

Page 11

... Generates an embedded word clock for each strobe signal. REFCK CNTL[0:1] Sending Unit DATA [0:19 Note: Data on serializer pins DP[21:22] is output on pins DP[23:24] of the deserializer. Figure 12. Unidirectional Serializer and Deserializer © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 Unidirectional Data Transfer BIT PLL Gen. – – Serializer CKSO CKSI Deserializer ...

Page 12

... Devices alternate frames of data controlled by a direction control and a direction sense. When DIRI on the right- hand FIN24AC is HIGH, data is sent from the camera to the camera interface at the base. When DIRI on the Flex Circuit Design Guidelines The serial I/O information is transmitted at a high serial rate. Care must be taken implementing this serial I/O flex cable. The following best practices should be used when developing the flex cabling or Flex PCB: ■ ...

Page 13

... Symbol Supply Voltage DDA DDS V Supply Voltage DDP T Operating Temperature A V Supply Noise Voltage DDA-PP © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 Parameter All Pins CKSO, CKSI, DSO to GND Parameter 13 Min. Max. Unit -0.5 +4.6 V -0.5 +4.6 V Continuous -65 +150 ° ...

Page 14

... Voltage is referenced to GROUND unless otherwise specified (except ΔV and the difference in device ground levels between the CTL driver and the CTL receiver. GO © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 Test Conditions V = 3.3 ± 0.3 DDP I = –2 2.5 ± 0.2 OH ...

Page 15

... CLKT Time t STROBE Pulse Width SPWH HIGH/LOW © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 Test Conditions All DP and Control Inputs CKREF DIR = 1 All DP and Control Inputs CKREF DIR = 0 All DP and Control Inputs ...

Page 16

... If the CKREF is not equal to STROBE for the serializer, the CKP signal does not maintain a 50% duty cycle. The low time of CKP remains 13 bit times. © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 Test Conditions CKREF x 26 ...

Page 17

... CKREF, STROBE, S1, S2, DIRI C Capacitance of Parallel Port Pins Capacitance of Differential I/O Signals IO-DIFF © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 Test Conditions DIRI LOW-to-HIGH or HIGH-to-LOW DIRI LOW-to-HIGH DIRI HIGH-to-LOW DIRI = 0, S1( and S2(1) = LOW-to-HIGH, Figure 29 (9) DIRI = 0, ...

Page 18

... Typical values are measured 2.5V TLH 80% V 20% DIFF V = (DS+) – (DS-) DIFF DS – DS- Figure 17. CTL Output Load and Transition Times © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 DS+ DUT DS- Figure 15. CTL Input Common Mode Test Circuit T 999h b b ...

Page 19

... Figure 21. Deserializer Data Valid Window Time and Clock Output Parameters t TCCD STROBE V DD/2 CKS0 DIFF CKS0+ Note: STROBE = CKREF Figure 23. Serializer Clock Propagation Delay © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 (Continued) Data t HTC CKREF t PDV 50% RCOL Note: CKREF signal is free running. CKSI- CKSI+ CKP Figure 24 ...

Page 20

... PLZ(HZ DS+,CKS0+ HIGH-Z DS-,CKS0- Note: CKREF must be active and PLL must be stable. Figure 29. Serializer Enable and Disable Time © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 (Continued) CKSO- t H_DS CKSO+ DSO+ DSO- Note: Data is typically edge aligned with the clock. ...

Page 21

... Sketch A (Side or Front Sectional View) Component Rotation Shipping Reel Dimension Dia A max Tape Dia A Dim B Width Max. Min. 8 330 1.5 12 330 1.5 16 330 1.5 © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0 Min. ±0.1 ±0.1 ±0.1 Typ ...

Page 22

... Sketch A (Side or Front Sectional View) Component Rotation Shipping Reel Dimension Dia A max Tape Dia A Dim B Width Max. Min. 8 330 1.5 12 330 1.5 16 330 1.5 © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 (Continued Min. ±0.1 ±0.1 ± ...

Page 23

... Dimensions are in millimeters unless otherwise noted. 2X 0.10 C TERMINAL A1 CORNER INDEX AREA (QA CONTROL VALUE) 1.00 MAX 0. SEATING PLANE Figure 31. Pb-Free, 42-Ball, Ultra Small Scale Ball Grid Array (USS-BGA), JEDEC MO-195, 3.5mm Wide © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 3.50 2X 0.10 C (0.6) 4.50 0.5 0.89±0.082 0.45±0.05 0.21±0.04 0.23±0.05 23 (0.35) (0.5) 2 ...

Page 24

... Physical Dimensions (Continued) Dimensions are in millimeters unless otherwise noted. Figure 32. Pb-Free, 40-Terminal, Molded Leadless Package (MLP), Quad, JEDEC MO-220, 6mm Square © 2005 Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 (DATUM A) 24 www.fairchildsemi.com ...

Page 25

... Fairchild Semiconductor Corporation FIN24AC Rev. 1.0.3 25 www.fairchildsemi.com ...

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