Fairchild FIN24CGFX Userdesâ ¢low-voltage 24-bit bi-directional serializer/deserializer Datasheet

FIN24C
µSerDes™Low-Voltage 24-Bit Bi-Directional
Serializer/Deserializer
tm
Features
General Description
■ Low power for minimum impact on battery life
The FIN24C 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 signaling is also important for providing a noise-insensitive signal 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 deserialized. 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.
■
■
■
■
■
■
■
■
■
– Multiple power-down modes
– AC coupling with DC balance
100nA in standby mode, 5mA typical operating
conditions
Cable reduction: 25:4 or greater
Bi-directional operation 50:7 reduction or greater
Up to 24 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: >7.5kV HBM
Parallel I/O power supply (VDDP) range between
1.65V to 3.6V
Applications
■ Micro-controller or pixel interfaces
■ Image sensors
■ Small displays
– LCD, cell phone, digital camera, portable gaming,
printer, PDA, video camera, automotive
Ordering Information
Order Number
Package
Number
Pb-Free
FIN24CGFX
BGA042
Yes
42-Ball Ultra Small Scale Ball Grid Array (USS-BGA),
JEDEC MO-195, 3.5mm Wide
FIN24CMLX
MLP040
Yes
40-Terminal Molded Leadless Package (MLP), Quad,
JEDEC MO-220, 6mm Square
Package Description
Pb-Free package per JEDEC J-STD-020B. BGA and MLP packages available in tape and reel only.
µSerDesTM is a trademark of Fairchild Semiconductor Corporation.
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
www.fairchildsemi.com
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
October 2006
PLL
CKREF
STROBE
+
CKS0+
–
CKS0-
I
cksint
Register
DP[m+1:24]
Word
Boundary
Generator
0
Serializer
Control
DSO+/DSI-
+
–
Serializer
DSO-/DSI+
oe
DP[1:m]
Register
I/O
Control
Register
Note:
m = 20 or 22
+
Deserializer
–
Deserializer cksint
Control
+
CKSI+
–
CKSI100Ω
Termination
WORD CK
Generator
CKP
100Ω Gated
Termination
Control Logic
S1
S2
DIRO
Freq.
Control
Direction
Control
DIRI
oe
Power Down
Control
Figure 1. Block Diagram
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
www.fairchildsemi.com
2
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
Functional Block Diagram
Terminal
Name
I/O Type
Number of
Terminals
DP[1:20]
I/O
20
LVCMOS Parallel I/O, direction controlled by DIRI Terminal
DP[21:24]
I or O
4
LVCMOS Parallel Unidirectional Inputs or Outputs Dependent on State of
S1, S2 Terminals
Description of Signals
CKREF
IN
1
LVCMOS Clock Input and PLL Reference
STROBE
IN
1
LVCMOS Strobe Signal for Latching Data into the Serializer
CKP
OUT
1
LVCMOS Word Clock Output
DSO+ / DSI–
DSO– / DSI+
DIFF-I/O
2
CTL Differential Serial I/O Data Signals(1)
DSO: Refers to output signal pair
DSI: Refers to input signal pair
DSO(I)+: Positive signal of DSO(I) pair
DSO(I)–: Negative signal of DSO(I) pair
CKSI+, CKSI–
DIFF-IN
2
CTL Differential Deserializer Input Bit Clock
CKSI: Refers to signal pair
CKSI+: Positive signal of CKSI pair
CKSI–: Negative signal of CKSI pair
CKSO+, CKSO–
DIFF-OUT
2
CTL Differential Serializer Output Bit Clock
CKSO: Refers to signal pair
CKSO+: Positive signal of CKSO pair
CKSO–: Negative signal of CKSO pair
S1
IN
1
S2
IN
1
LVCMOS Mode Selection Pins used to define mode of operation for some
terminals. The control terminals, DP[21:24] can be set as 4 terminals in the
same direction or two in each direction.
DIRI
IN
1
LVCMOS Control Input
Used to control direction of Data Flow
DIRO
OUT
1
LVCMOS Control Output
Inversion of DIRI
VDDP
Supply
1
Power Supply for Parallel I/O and Translation Circuitry
VDDS
Supply
1
Power supply for core circuitry and serial I/O
VDDA
Supply
1
Power Supply for Analog PLL Circuitry
GND
Supply
0
Use Bottom Ground Plane for Ground Signals
Note:
1. 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
FIN24C Rev. 1.0.2
www.fairchildsemi.com
3
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
Terminal Description
31 CKREF
32 STROBE
33 DP[1]
34 DP[2]
35 DP[3]
36 DP[4]
37 DP[5]
38 DP[6]
39 DP[7]
40 DP[8]
22 S2
10
21 VDDS
DP[17]
DP[18]
DP[19]
DP[20]
DP[21]
DP[22]
DP[23]
DP[24]
S1
VDDA
20
23 DIRI
9
19
24 CKSI+
8
18
25 CKSI-
7
17
26 DSO- / DSI+
6
16
27 DSO+ / DSI-
5
15
28 CDSO-
4
14
29 CKSO+
3
13
30 DIRO
2
12
1
11
DP[9]
DP[10]
DP[11]
DP[12]
VDDP
CKP
DP[13]
DP[14]
DP[15]
DP[16]
Figure 2. Terminal Assignments for MLP (Top View)
1
2
3
4
5
Pin Assignments
6
1
A
2
3
4
5
6
DP[3]
DP[1]
CKREF
DP[2]
STROBE
DIRO
CKSO+
CKSO-
B
A
DP[9]
DP[7]
DP[5]
C
B
DP[11]
DP[10]
DP[6]
D
C
CKP
DP[12]
DP[8]
DP[4]
E
D
DP[13]
DP[14]
VDDP
GND
F
E
DP[15]
DP[16]
GND
VDDS
CKSI+
CKSI-
J
F
DP[17]
DP[18]
DP[21]
VDDA
S2
DIRI
J
DP[19]
DP[20]
DP[22]
DP[23]
DP[24]
S1
(Top View)
DSO- / DSI+ DSO+ / DSI-
Figure 3. Terminal Assignments for µBGA
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
www.fairchildsemi.com
4
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
Connection Diagrams
When a device with dedicated data outputs turns from a
deserializer to a serializer, the dedicated outputs remain
at the last logical value asserted. This value only
changes if the device is once again turned around into a
deserializer and the values are overwritten.
The FIN24C has four signals that are selectable as two
unidirectional inputs and two unidirectional outputs, or as
four unidirectional inputs or four unidirectional outputs.
These are often used by applications for control signals.
The mode signals S1 and S2 determine the direction of
the DP[21:24] data signals. The 00 state provides for a
power-down state where all functionality of the device is
disabled or reset. The DIRI terminal controls the direction of the device in Modes 1 and 3. When in Mode 2, the
direction is controlled by both the DIRI and STROBE signals. Table 1 provides a complete description of the various modes of operation. For unidirectional operation, the
DIRI terminal should be hardwired to a valid logic level
and the DIRO terminal should be left floating. For bidirectional operation, the DIRO of the master device
should be connected to the DIRI of the slave device.
When the device is in Mode 2 (S2 = 1, S1 = 0), the direction of operation is dependent upon both the STROBE
signal and the DIRI signal. At power-up, the mode select
signals are both LOW and the DIRO signal is the inversion of the DIRI signal. After power-up, the DIRI and
STROBE signal should initially both be HIGH. When
STROBE goes LOW the device is configured as a serializer and DIRO will be forced LOW. The device remains
a serializer until the DIRI signal goes LOW. When DIRI
goes LOW, the device is re-configured as a deserializer
and the DIRO signal is asserted HIGH.
When operating the SerDes in pairs, not all operating
modes are compatible. Regardless of the mode of operation, the serializer is always sending 24 bits of data and
two word boundary bits. The deserializer is always
receiving 24 bits of data and two word boundary bits. For
some modes of operation, not all of the data bits are
valid because some pins are dedicated inputs or outputs.
A value of “0” is sent in the serial stream for all invalid
data bits.
When operating in a bi-directional mode, the turn-around
functionality is dependent on the mode of the device. For
Modes 1 and 3, the device asynchronously passes and
inverts the DIRI signal through the device to the DIRO
signal. Care must be taken during design to ensure that
no contention occurs between the deserializer outputs
and the other devices on this port. Optimally the peripheral device driving the serializer should be in a HIGHimpedance state prior to the DIRI signal being asserted.
Table 1. Control Logic Circuitry
Inputs
Output
Mode
Number
S2
S1
STROBE
DIRI
DIRO
Device
State
0
0
0
x
0
1
na
x
1
0
na
x
0
1
Des
x
1
0
Ser
0
0
1
Des
0
1
0
Ser
1
0
1
Des
1
1
DIRO (n-1)
Previous
1
2
0
1
1
0
Description
Power-Down State. The device is
powered down and disabled
regardless of all other signals.
4-Bit Unidirectional Control Mode
DP[21:24] are outputs
4-Bit Unidirectional Control Mode
DP[21:24] are inputs
STROBE and DIRI operate as an
RS-Latch to change the state of
operation.
In general, DIRI and Strobe should
not be LOW at the same time.
3
1
1
x
0
1
Des
2-Bit Unidirectional Control Mode
DP[21:22] are Inputs
DP[23:24] Outputs
1
1
x
1
0
Ser
2-Bit Unidirectional Control Mode
DP[21:22] are Inputs
DP[23:24] Outputs
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
www.fairchildsemi.com
5
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
Control Logic Circuitry
Power-Down Mode: (Mode 0)
When operating in 4-bit control mode, the master device
must be configured as MODE 2 (S2 = 1, S1 = 0) and the
slave device must be configured as MODE 1 (S2 = 0, S1
= 1). When operating in this mode, 24 data and control
bits can be sent from the master to the slave and 20 data
bits can be sent from the slave to the master. Unidirectional control signals should be connected to DP[21:24].
Mode 0 is used for powering down and resetting the
device. When both of the mode signals are driven to a
LOW state, the PLL and references are disabled, differential input buffers are shut off, differential output buffers
are placed into a HIGH-impedance state, LVCMOS outputs are placed into a HIGH-impedance state, LVCMOS
inputs are driven to a valid level internally, and all internal circuitry is reset. The loss of CKREF state is also
enabled to ensure that the PLL only powers up if there is
a valid CKREF signal.
2-Bit Control Mode
When operating in 2-bit control mode, both devices must
be configured in MODE 3 (S2 = S1 = “1”). In this mode,
22 bits can be sent in either direction. When operating in
a 2-bit control mode, serialized bits 21 and 22 appear on
outputs 23 and 24 of the deserializer.
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
In a typical application, the device only changes between
the power-down mode and the selected mode of operation. This allows for system-level power-down functionality to be implemented via a single wire for a SerDes pair.
The S1 and S2 selection signals that have their operating mode driven to a “logic 0” should be hardwired to
GND. The S1 and S2 signals that have their operating
mode driven to a “logic 1” should be connected to a
system level power-down signal.
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6
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
4-Bit Control Mode
The serializer configuration is described in the following sections. The basic serialization circuitry works essentially the
same in these modes, but the actual data and clock streams differ depending on if CKREF is the same as the
STROBE signal or not. When CKREF equals STROBE, the CKREF and STROBE signals are hardwired together as
one signal. When CKREF does not equal STROBE, each signal is distinct and CKREF must be running at a frequency
high enough to avoid any loss of data condition. CKREF must never be a lower frequency than STROBE.
Serializer Operation: (Figure 4)
DIRI = 1,
CKREF = STROBE
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.
Once the PLL is stable and locked, the device can begin to capture and serialize
data. Data is captured on the rising edge of the STROBE signal and then serialized. The serialized data stream is synchronized and sent source synchronously
with a bit clock with an embedded word boundary. Serialized data is sent at 26
times the CKREF clock rate. Two additional data bits are sent that define the word
boundary. When in this mode, the internal deserializer circuitry is disabled; including the serial clock, serial data input buffers, the bidirectional parallel outputs, and
the CKP word clock. The CKP word clock is driven HIGH.
DPI[1:24]
WORD n-1
WORD n
WORD n+1
CKREF
b24 b25 b26
DSO
b1
b2
b3
b4
b22 b23 b24 b25 b26
b1
b2
b3
b4
b5
CKS0
WORD n-2
WORD n-1
WORD n
Figure 4. Serializer Timing Diagram (CKREF equals STROBE)
Serializer Operation: (Figure 5),
DIRI = 1,
CKREF does not = STROBE
If the same signal is not used for CKREF and STROBE, the CKREF signal must
be run at a higher frequency than the STROBE rate to serialize the data correctly.
The actual serial transfer rate remains at 26 times the CKREF frequency. A data
bit value of zero is sent when no valid data is present in the serial bit stream. The
operation of the serializer otherwise remains the same.
The exact frequency that the reference clock needs is dependent upon the stability of the CKREF and STROBE signal. If the source of the CKREF signal implements spread spectrum technology, the maximum frequency of this spread
spectrum clock should be used in calculating the ratio of STROBE frequency to
the CKREF frequency. Similarly if the STROBE signal has significant cycle-tocycle variation, the maximum cycle-to-cycle time needs to be factored into the
selection of the CKREF frequency.
CKREF
DP[1:24]
WORD n-1
WORD n
WORD n+1
STROBE
DSO
b1 b2 b 3 b 4 b 5 b 6
b7
b22 b23 b24 b25 b26
b 1 b 2 b3
CKS0
No Data
WORD n-1
No Data
WORD n
Figure 5. Serializer Timing Diagram (CKREF does not equal STROBE)
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
www.fairchildsemi.com
7
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
Serializer Operation Mode
Serializer Operation: (Figure 6),
DIRI = 1,
No CKREF
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.
At power-up, the device is configured to accept a serialization clock from CKSI. If
a CKREF is received, the device enables the CKREF serialization mode. The
device remains in this mode even if CKREF is stopped. To re-enable this mode,
the device must be powered down and powered back up with “logic 0” on CKREF.
CKSI
DP[1:24]
WORD n-1
WORD n
WORD n+1
STROBE
DSO
b 1 b 2 b3 b 4 b 5 b 6 b 7
b22 b23 b24 b25 b26
b1 b2 b3
CKS0
No Data
WORD n-1
No Data
WORD n
Figure 6. Serializer Timing Diagram Using Provided Bit Clock (No CKREF)
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
www.fairchildsemi.com
8
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
Serializer Operation Mode (Continued)
The operation of the deserializer is only dependent upon the data received on the DSI data signal pair and the CKSI
clock signal pair. The following two sections describe the operation of the deserializer under two distinct serializer
source conditions. References to the CKREF and STROBE signals refer to the signals associated with the serializer
device used in generating the serial data and clock signals that are inputs to the deserializer.
When operating in this mode, the internal serializer circuitry is disabled, including the parallel data input buffers. If there
is a CKREF signal provided, the CKSO serial clock continues to transmit bit clocks. Upon device power-up (S1 or S2 =
1), all deserializer output data pins are driven LOW until valid data is passed through the deserializer.
Deserializer Operation: DIRI = 0
(Serializer Source:
CKREF = STROBE)
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. The word boundary is defined in the actual clock and data signal. Parallel data is generated at the time the word boundary is detected. The falling edge of CKP occurs approximately six bit times after the next falling edge of
CKSI. The rising edge of CKP goes HIGH approximately 13 bit times after CKP
goes LOW. When no embedded word boundary occurs, no pulse is generated on
CKP and CKP remains HIGH.
WORD n-1
DSI b24 b25 b26
WORD n
b1
b6
b7
b8
b9
WORD n+1
b19 b20
b24 b25 b26
b1
b2
CKSI
CKPO
DP[1:24] WORD n-2
WORD n-1
WORD n
Figure 7. Deserializer Timing Diagram (Serializer Source: CKREF equals STROBE)
Deserializer Operation: DIRI = 0
(Serializer Source:
CKREF does not = STROBE)
The logical operation of the deserializer remains the same if the CKREF is equal
in frequency to the STROBE or at a higher frequency than the STROBE. The
actual serial data stream presented to the deserializer, however, differs because it
has non-valid data bits sent between words. The duty cycle of CKP varies based
on the ratio of the frequency of the CKREF signal to the STROBE signal. The frequency of the CKP signal is equal to the STROBE frequency. The falling edge of
CKP occurs six bit times after the data transition. The LOW time of the CKP signal
is equal to half (13 bit times) of the CKREF period. The CKP HIGH time is equal to
STROBE period – half of the CKREF period. Figure 8 is representative of a waveform that could be seen when CKREF is not equal to STROBE. If CKREF is significantly faster, additional non-valid data bits occur between data words.
WORD n-1
DSI b24 b25 b26
WORD n
0
0
bj
bj+1
WORD n+1
bj+13 bj+14
b24 b25 b26
0
0
CKSI
CKPO
DP[1:24] WORD n-2
13 bit times
6 bit times
WORD n-1
WORD n
Figure 8. Deserializer Timing Diagram (Serializer Source: CKREF does not equal STROBE)
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
www.fairchildsemi.com
9
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
Deserializer Operation Mode
bidirectional pins should be connected to GND through a
high-value resistor. If a FIN24C devices is configured as
an unidirectional serializer, unused data I/O can be
treated as unused inputs. If the FIN24C is hardwired as a
deserializer, unused date I/O can be treated as unused
outputs.
The FIN24C sends and receives serial data source synchronously with a bit clock. The bit clock has been modified to create a word boundary at the end of each data
word. The word boundary has been implemented by
skipping a LOW clock pulse. This appears in the serial
clock stream as three consecutive bit times where signal
CKSO remains HIGH.
From
Deserializer
To implement this sort of scheme, two extra data bits are
required. During the word boundary phase, the data toggles either HIGH-then-LOW or LOW-then-HIGH dependent upon the last bit of the actual data word. Table 2
provides some examples of the actual data word and the
data word with the word boundary bits added. Note that
a 24-bit word is extended to 26 bits during serial transmission. Bit 25 and Bit 26 are defined with-respect-to Bit
24. Bit 25 is always the inverse of Bit 24 and Bit 26 is
always the same as Bit 24. This ensures that a “0” → “1”
and a “1” → “0” transition always occurs during the
embedded word phase where CKSO is HIGH.
DP[n]
To
Serializer
From
Control
Figure 9. LVCMOS I/O
Differential I/O Circuitry
The FIN24C employs FSC proprietary CTL I/O technology. CTL is a low-power, low-EMI differential swing I/O
technology. The CTL output driver generates a constant
output source and sink current. The CTL input receiver
senses the current difference and direction from the output buffer to which it is connected. This differs from
LVDS, which uses a constant current source output, but
a voltage sense receiver. Like LVDS, an input source
termination resistor is required to properly terminate the
transmission line. The FIN24C device incorporates an
internal termination resistor on the CKSI receiver and a
gated internal termination resistor on the DS input
receiver. The gated termination resistor ensures proper
termination regardless of direction of data flow. The relatively greater sensitivity of the current sense receiver of
CTL allows it to work at much lower current drive and a
much lower voltage.
The serializer generates the word boundary data bits
and the boundary clock condition and embeds them into
the serial data stream. The deserializer looks for the end
of the word boundary condition to capture and transfer
the data to the parallel port. The deserializer only uses
the embedded word boundary information to find and
capture the data. These boundary bits are stripped prior
to the word being sent out the parallel port.
LVCMOS Data I/O
The LVCMOS input buffers have a nominal threshold
value equal to half VDDP. The input buffers are only operational when the device is operating as a serializer.
When the device is operating as a deserializer, the
inputs are gated off to conserve power.
The LVCMOS 3-STATE output buffers are rated for a
source/sink current of 2mAs at 1.8V. The outputs are
active when the DIRI signal is asserted LOW. When the
DIRI signal is asserted HIGH, the bi-directional LVCMOS
I/Os are in a HIGH-Z state. Under purely capacitive load
conditions, the output swings between GND and VDDP.
During power-down mode, the differential inputs are disabled and powered down and the differential outputs are
placed in a HIGH-Z state. CTL inputs have an inherent
fail-safe capability that supports floating inputs. When
the CKSI input pair of the serializer is unused, it can reliably be left floating. Alternately both of the inputs can be
connected to ground. CTL inputs should never be connected to VDD. When the CKSO output of the deserializer is unused, it should be allowed to float.
Unused LVCMOS input buffers must be tied off to either
a valid logic LOW or a valid logic HIGH level to prevent
static current draw due to a floating input. Unused
LVCMOS outputs should be left floating. Unused
Table 2. Word Boundary Data Bits
24-Bit Data Words
Hex
24-Bit Data Word with Word Boundary
Binary
Hex
Binary
FFFFFFh
1111 1111 1111 1111 1111 1111b
2FFFFFFh
10 1111 1111 1111 1111 1111 1111b
555555h
0101 0101 0101 0101 01010 0101b
1555555h
01 0101 0101 0101 0101 0101 0101b
xxxxxxh
0xxx xxxx xxxx xxxx xxxx xxxxb
1xxxxxxh
01 0xxx xxxx xxxx xxxx xxxx xxxxb
xxxxxxh
1xxx xxxx xxxx xxxx xxxx xxxxb
2xxxxxxh
10 1xxx xxxx xxxx xxxx xxxx xxxxb
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
www.fairchildsemi.com
10
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
Embedded Word Clock Operation
–
From
Control
To
Deserializer
Gated
Termination
(DS Pins Only)
+
–
Figure 10. Bi-Directional Differential I/O Circuitry
PLL Circuitry
An alternate way of powering down the PLL is by stopping the CKREF signal either HIGH or LOW. Internal circuitry detects the lack of transitions and shuts the PLL
and serial I/O down. Internal references, however, are
not disabled, allowing the PLL to power-up and re-lock in
a lesser number of clock cycles than when exiting Mode
0. When a transition is seen on the CKREF signal, the
PLL is reactivated.
The CKREF input signal is used to provide a reference to
the PLL. The PLL generates internal timing signals capable of transferring data at 26 times the incoming CKREF
signal. The output of the PLL is a bit clock sent with the
serial data stream.
There are two ways to disable the PLL: by entering the
Application Mode Diagrams MODE = 3: Unidirectional Data Transfer
BIT CK
Gen.
Serializer
Control
Register
STROBE_M
DP[1:22]_M
+
–
+
–
CKSO
Work CK
Gen
CKSI
DS
Serializer
+
–
+
–
CKP_S
Deserializer
Control
Deserializer
Register
PLL
CKREF_M
DP[1:20, 23:24]_S
Master Device Operating as a Serializer
Slave Device Operating as a Deserializer
DIR = “1”
S2 = S1 = “0”
DIR = “0”
S2 = S1 = “0”
Figure 11. Simplified Block Diagram for Unidirectional Serializer and Deserializer
Figure 11 shows basic operation when a pair of SerDes is configured in an unidirectional operation mode.
In Master Operation, the device:
In Slave Operation, the device:
1. Is configured as a serializer at power-up based on the
value of the DIRI signal.
1. Is configured as a deserializer at power-up based on
the value of the DIRI signal.
2. Accepts CKREF_M word clock and generate a bit
clock with embedded word boundary. This bit clock is
sent to the slave device through the CKSO port.
2. Accepts an embedded word boundary bit clock on
CKSI.
3. Deserializes the DS data stream using the CKSI input
clock.
3. Receives parallel data on the rising edge of
STROBE_M.
4. Writes parallel data onto the DP_S port and generates
the CKP_S. CKP_S is only generated when a valid
data word occurs.
4. Generates and transmits serialized data on the
DS signals source synchronous with CKSO.
5. Generates an embedded word clock for each strobe
signal.
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
www.fairchildsemi.com
11
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
From
Serializer
Mode 0 state (S1 = S2 = 0) or upon detecting a LOW on
both the S1 and S2 signals. Any of the other modes are
entered by asserting either S1 or S2 HIGH and by providing a CKREF signal. The PLL powers up and goes
through a lock sequence. Wait the specified number of
clock cycles prior to capturing valid data into the parallel
port. When the µSerDes chipset transitions from a
power-down state (S1, S2 = 0, 0) to a powered state
(example S1, S2 = 1, 1), CKP on the deserializer transitions LOW for a short duration, then returns HIGH. Following this, the signal level of the deserializer at CKP
corresponds to the serializer signal levels.
DS+
DS-
+
FIN24C
CKREF
FIN24C
CKSO
CKP
CKSI
STROBE
Sending
Unit
DS
DS
DATA [0:23]
DP[1:24]
DP[1:24]
DIRO
VDD
DATA [0:23]
Receiving
Unit
DIRO
DIRI
DIRI
S1
S2
S1
S2
PwrDwn
Figure 12. 24-Bit Unidirectional Serializer and Deserializer
REFCK
FIN24C
CKREF
FIN24C
CKSO
CKSI
STROBE
Control
Unit
CNTL[0:3]
DATA [0:19]
PwrDwn
DS
DS
DP[21:24]
DP[1:20]
CKP
STROBE
DP[21:24]
DP[1:20]
CKSI
CKSO
S2
S1
DIRI
CNTL[0:3]
DATA [0:19]
Slave
Unit
S2
S1
DIRI
DIRO
DIRO
Figure 13. Unidirectional Control, Bi-directional Data Interface
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:
■ Keep all four differential wires the same length.
■ Allow no noisy signals over or near differential serial wires. Example: No LVCMOS traces over differential wires.
■ Use only one ground plane or wire over the differential serial wires. Do not run ground over top and bottom.
■ Do not place test points on differential serial wires.
■ Use differential serial wires a minimum of 2cm away from the antenna.
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
www.fairchildsemi.com
12
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
REFCK
The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed.
The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics
tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table defines
the conditions for actual device operation.
Symbol
VDD
Parameter
Min.
Max.
Unit
Supply Voltage
-0.5
+4.6
V
All Input/Output Voltage
-0.5
+4.6
V
LVDS Output Short-Circuit Duration
Continuous
+150
°C
TJ
Maximum Junction Temperature
+150
°C
TL
Lead Temperature (Soldering, 4 seconds)
+260
°C
TSTG
Storage Temperature Range
-65
ESD Rating Human Body Model, 1.5k¾, 100pF
All Pins
CKSO, CKSI, DSO to GND
>2
> 7.5
kV
kV
Recommended Operating Conditions
Symbol
Parameter
Min.
Max.
Unit
VDDA, VDDS
Supply Voltage
2.5
2.9
V
VDDP
Supply Voltage
1.65
3.6
V
Operating Temperature
-30
+70
°C
100
mVp-p
TA
VDDA-PP
Supply Noise Voltage
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
www.fairchildsemi.com
13
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
Absolute Maximum Ratings
Values are provided for over-supply voltage and operating temperature ranges, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min.
Typ.(2)
Max.
Unit
LVCMOS I/O
VIH
Input High Voltage
0.65 x VDDP
VDDP
V
VIL
Input Low Voltage
GND
0.35 x VDDP
V
VOH
Output High Voltage
IOH = –2.0 mA VDDP = 3.3 ± 0.3
0.75 x VDDP
V
VDDP = 2.5 ± 0.2
VDDP = 1.8 ± 0.15
VOL
Output Low Voltage
IOL = 2.0 mA
VDDP = 3.3 ± 0.3
0.25 x VDDP
V
5.0
µA
VDDP = 2.5 ± 0.2
VDDP = 1.8 ± 0.15
IIN
Input Current
VIN = 0V to 3.6V
–5.0
DIFFERENTIAL I/O
IODH
Output High Source
Current
VOS = 1.0V, Figure 14
1.75
mA
IODL
Output Low Sink Current
VOS = 1.0V, Figure 14
0.95
mA
IOZ
Disabled Output Leakage
Current
CKSO, DSO = 0V to VDDS,
S2 = S1 = 0V
±0.1
±5.0
µA
IIZ
Disabled Input Leakage
Current
CKSI, DSI = 0V to VDDS,
S2 = S1 = 0V
±0.1
±5.0
µA
VICM
Input Common Mode Range VDDS = 2.775 ± 5%
VGO
Input Voltage Ground
Off-set Relative to Driver(3)
See Figure 15
RTRM
CKSI Internal Receiver
Termination Resistor
VID = 50mV, VIC = 925mV, DIRI =
0,
| CKSI+ – CKSI- | = VID
80.0
100
120
¾
RTRM
DSI Internal Receiver,
Termination Resistor
VID = 50mV, VIC = 925mV, DIRI =
0,
| DSI+ – DSI- | = VID
80.0
100
120
¾
VGO + 0.80
V
0
V
Notes:
2. Typical Values are given for VDD = 2.775V and TA = 25°C. Positive current values refer to the current flowing into device
and negative values means current flowing out of pins. Voltage is referenced to GROUND unless otherwise specified
(except ΔVOD and VOD).
3. VGO is the difference in device ground levels between the CTL driver and the CTL receiver.
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
www.fairchildsemi.com
14
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
DC Electrical Characteristics
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Units
IDDA1
VDDA Serializer Static Supply
Current
All DPI and Control Inputs at 0V or VDDP,
NO CKREF, S2 = 0, S1 = 1, DIRI = 1
450
µA
IDDA2
VDDA Deserializer Static Supply
Current
All DPI and Control Inputs at 0 or VDDP,
NO CKREF, S2 = 0, S1 = 1, DIRI = 1
550
µA
IDDS1
VDDS Serializer Static Supply
Current
All DPI and Control Inputs at 0V or VDDP,
NO CKREF, S2 = 0, S1 = 1, DIRI = 1
4.0
mA
VDDS Deserializer Static Supply
Current
All DPI and Control Inputs at 0V or VDDP,
NO CKREF, S2 = 0, S1 = 1, DIRI = 0
4.5
IDD_PD
VDD Power-Down Supply Current S1 = S2 = 0, All Inputs at GND or VDDP
IDD_PD = IDDA + IDDS + IDDP
0.1
µA
mA
IDD_SER1 26:1 Dynamic Serializer
Power Supply Current
IDD_SER1 = IDDA + IDDS + IDDP
CKREF = STROBE
DIRI = H
See Figure 16
10MHz
11.0
20MHz
16.0
IDD_DES1 1:26 Dynamic Deserializer
Power Supply Current
IDD_DES1 = IDDA + IDDS + IDDP
CKREF = STROBE
DIRI = L
See Figure 16
10MHz
7.5
20MHz
10.0
IDD_SER2 26:1 Dynamic Serializer
Power Supply Current
IDD_SER2 = IDDA + IDDS + IDDP
NO CKREF, STROBE Active 10 MHz
CKSI = 15X Strobe
15 MHz
DIRI = H, See Figure 16
10.0
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
mA
mA
12.0
www.fairchildsemi.com
15
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
Power Supply Currents
Values are provided for over-supply voltage and operating temperature ranges, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min.
Typ.(4)
Max.
Units
50.0
T
100
ns
20.0
MHz
SERIALIZER INPUT OPERATING CONDITIONS
tTCP
CKREF Clock Period
(10 MHz–20 MHz)
fREF
CKREF Frequency Relative to CKREF does not equal STROBE
Strobe Frequency
See Figure 20
1.1 x fST
tCPWH
CKREF Clock High Time
0.2
0.5
T
tCPWL
CKREF Clock Low Time
0.2
0.5
T
tCLKT
LVCMOS Input Transition
Time
See Figure 20
tSPWH
STROBE Pulse Width
HIGH/LOW
See Figure 20
fMAX
Maximum Serial Data Rate
tSTC
DP(n) Setup to STROBE
tHTC
DP(n) Hold to STROBE
fREF
CKREF Frequency Relative to CKREF Does Not Equal STROBE
Strobe Frequency
90.0
ns
(T x 4) / 26
(T x 22) /
26
ns
CKREF x 26
260
520
Mb/s
DIRI = 1, See Figure 9 (f = 5MHz)
2.5
ns
2.0
ns
1.1 x
20.0
MHz
33a + 1.5
35a + 6.5
ns
–50.0
250
ps
fSTROBE
SERIALIZER AC ELECTRICAL CHARACTERISTICS
tTCCD
Transmitter Clock Input to
Clock Output Delay
tSPOS
CKSO Position Relative to DS See Figure 27(5)
See Figure 23, DIRI = 1,
CKREF = STROBE
PLL AC ELECTRICAL CHARACTERISTICS
tTPLLS0
Serializer PLL Stabilization
Time
See Figure 22
200
µs
tTPLLD0
PLL Disable Time Loss of
Clock
See Figure 27
30.0
µs
tTPLLD1
PLL Power-Down Time
See Figure 28(6)
20.0
ns
DESERIALIZER INPUT OPERATION CONDITIONS
tS_DS
Serial Port Setup Time,
DS-to-CKSI
See Figure 25(7)
1.4
ns
tH_DS
Serial Port Hold Time,
DS-to-CKS
See Figure 25(7)
–250
ps
DESERIALIZER AC ELECTRICAL CHARACTERISTICS
tRCOP
Deserializer Clock Output
(CKP OUT) Period
See Figure 21
tRCOL
CKP OUT Low Time
13a+3
ns
CKP OUT High Time
See Figure 21 (Rising Edge Strobe)
Serializer Source STROBE = CKREF
Where a = (1 / f) / 26(8)
13a-3
tRCOH
13a-3
13a+3
ns
8a-6
8a+1
ns
50.0
T
500
ns
tPDV
Data Valid to CKP LOW
See Figure 21 (Rising Edge Strobe)
Where a = (1 / f) / 26(8)
tROLH
Output Rise Time
(20% to 80%)
CL = 5pF
2.5
ns
tROHL
Output Fall Time
(80% to 20%)
See Figure 18
2.5
ns
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
www.fairchildsemi.com
16
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
AC Electrical Characteristics
Control Logic Timing Controls
Symbol
tPHL_DIR,
tPLH_DIR
Parameter
Propagation Delay
DIRI-to-DIRO
Test Conditions
Min. Typ. Max. Units
DIRI LOW-to-HIGH or HIGH-to-LOW
17.0
ns
tPLZ, tPHZ Propagation Delay
DIRI-to-DP
DIRI LOW-to-HIGH
25.0
ns
tPZL, tPZH Propagation Delay
DIRI-to-DP
DIRI HIGH-to-LOW
25.0
ns
tPLZ, tPHZ Deserializer Disable Time: DIRI = 0,
S0 or S1 to DP
S1(2) = 0 and S2(1) = LOW-to-HIGH, Figure 30
25.0
ns
tPZL, tPZH Deserializer Enable Time:
S0 or S1 to DP
DIRI = 0,(10)
S1(2) = 0 and S2(1) = LOW-to-HIGH, Figure 30
2.0
µs
tPLZ, tPHZ Serializer Disable Time:
S0 or S1 to CKSO, DS
DIRI = 1,
S1(2) = 0 and S2(1) = HIGH-to-LOW, Figure 28
25.0
ns
tPZL, tPZH Serializer Enable Time:
S0 or S1 to CKSO, DS
DIRI = 1,
S1(2) and S2(1) = LOW-to-HIGH, Figure 28
65.0
ns
Note:
9. Deserializer enable time includes the amount of time required for internal voltage and current references to stabilize.
This time is significantly less than the PLL lock time and does not impact overall system startup time.
Capacitance
Symbol
Parameter
Test Conditions
Min.
Typ.
Max. Units
CIN
Capacitance of Input Only Signals,
CKREF, STROBE, S1, S2, DIRI
DIRI = 1, S1 = S2 = 0,
VDDP = 2.5V
2.0
CIO
Capacitance of Parallel Port Pins
DP[1:12]
DIRI = 1, S1 = S2 = 0,
VDDP = 2.5V
2.0
pF
Capacitance of Differential I/O Signals
DIRI = 0, S1 = S2 = 0,
VDDP = 2.775V
2.0
pF
CIO-DIFF
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
pF
www.fairchildsemi.com
17
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
Notes:
4. Typical Values are given for VDD = 2.775V and TA = 25°C. Positive current values refer to the current flowing into
device and negative values refer to current flowing out of pins. Voltage is referenced to GROUND unless otherwise
specified (except ΔVOD and VOD).
5. Skew is measured from either the rising or falling edge of CKSO clock to the rising or falling edge of data (DSO).
Signals are edge aligned. Both outputs should have identical load conditions for this test to be valid.
6. The power-down time is a function of the CKREF frequency prior to CKREF being stopped HIGH or LOW and the
state of the S1/S2 mode pins. The specific number of clock cycles required for the PLL to be disabled varies based
on the operating mode of the device.
7. Signals are transmitted from the serializer source synchronously. In some cases, data is transmitted when the clock
remains at a high state. Skew should only be measured when data and clock are transitioning at the same time. Total
measured input skew is a combination of output skew from the serializer, load variations, and ISI and jitter effects.
8. Rising edge of CKP appears approximately 13 bit times after the falling edge of the CKP output. Falling edge of CKP
occurs approximately eight bit times after a data transition or six bit times after the first falling edge of CSKO. Variation
of the data with respect to the CKP signal is due to internal propagation delay differences of the data and CKP path
and propagation delay differences on the various data pins. 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 the CKP remains 13 bit times.
DS+
DUT
DUT
RL/2
+
+
–
–
VOD
Input
RL/2
VOS
DS-
100Ω Termination
+
– VGO
Figure 15. CTL Input Common Mode Test Circuit
Figure 14. Differential CTL Output DC Test Circuit
T
DP[1:12]
999h
666h
666h
CKREF
CKS0CKS0+
DS+
DS-
b13
b14
b1
b2
b6
b7
b8
b11
b12
b1
b2
b6
b7
b8
b11
b12
0
1
0
1
0
0
1
1
0
1
0
1
1
0
b1
b2
Note:
The “worst-case” test pattern produces a maximum toggling of internal digital circuits, CTL I/O and LVCMOS I/O with the PLL operating at the reference
frequency, unless otherwise specified. Maximum power is measured at the maximum VDD values. Minimum values are measured at the minimum VDD values.
Typical values are measured at VDD = 2.775V.
Figure 16. “Worst Case” Serializer Test Pattern
tTLH
80%
80%
80%
VDIFF 20%
20%
DPn
VDIFF = (DS+) – (DS-)
DS+
5 pF
80%
DPn 20%
20%
+
–
tROHL
tROLH
tTHL
5pF
1000Ω
100Ω
DS-
Figure 17. CTL Output Load and Transition Times
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
Figure 18. LVCMOS Output Load
and Transition Times
www.fairchildsemi.com
18
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
AC Loading and Waveforms
Setup Time
tCLKT
tSTC
tCLKT
90%
90%
STROBE
DP[1:12]
Data
10%
tHTC
Hold Time
tTCP
STROBE
CKREF 50%
DP[1:12]
10%
Data
VIH
VIL
tTCH
50%
tTCL
Setup: MODE0 = “0” or “1”, MODE1 = “1”, SER/DES = “1”
Figure 20. LVCMOS Clock Parameters
Figure 19. Serial Setup and Hold Time
Data Valid
tPDV
CKP
Data
DP[1:12]
tTPLS0
VDD/VDDA
tRCOP
CKP
50%
75%
50%
25%
tRCOH
tRCOL
S1 or S2
CKREF
CKS0
Note: CKREF signal is free running.
Setup: EN_DES = “1”, CKSI, and DSI are valid signals.
Figure 22. Serializer PLL Lock Time
Figure 21. Deserializer Data Valid Window Time
and Clock Output Parameters
tTCCD
STROBE
tRCCD
VDD/2
CKS0CKS0+
CKSICKSI+
VDIFF = 0
CKP
Note: STROBE = CKREF
VDD/2
Figure 24. Deserializer Clock Propagation Delay
Figure 23. Serializer Clock Propagation Delay
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
VDIFF = 0
www.fairchildsemi.com
19
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
AC Loading and Waveforms (Continued)
CKSOtS_DS
CKSICKSI+
tH_DS
VDIFF = 0
CKSO+
DSO+
VDIFF=0
VDIFF = 0
DSODSI+
DSI-
VDIFF=0
VID / 2
tSK(P-P)
VID/2
Note: Data is typically edge aligned with the clock.
Figure 26. Differential Output Signal Skew
Figure 25. Differential Input Setup and Hold Times
tTPPLD0
CKREF
tTPPLD1
S1 or S2
CKS0
CKS0
Note: CKREF Signal can be stopped either HIGH or LOW.
Figure 27. PLL Loss of Clock Disable Time
Figure 28. PLL Power-Down Time
tPLZ(HZ)
tPZL(ZH)
tPLZ(HZ)
S1 or S2
S1 or S2
DS+,CKS0+
DS-,CKS0-
tPZL(ZH)
DP
HIGH-Z
Note: If S1(2) transitioning, S2(1) must = 0 for test to be valid.
Note: CKREF must be active and PLL must be stable.
Figure 29. Serializer Enable and Disable Time
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
Figure 30. Deserializer Enable and Disable Times
www.fairchildsemi.com
20
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
AC Loading and Waveforms (Continued)
Dimensions are in millimeters unless otherwise noted.
BGA Embossed Tape Dimension
D
P0
T
P2
E
F
K0
Wc
W
B0
Tc
A0
Package
A0
D
D1
E
B0
±0.1 ±0.1 ±0.05 Min. ±0.1
3.5 x 4.5
TBD
TBD
1.55
1.5
D1
P1
F
±0.1
1.75
User Direction of Feed
K0
P1
P0
P2
T
TC
W
WC
±0.1 Typ. Typ. ±0/05 Typ. ±0.005 ±0.3 Typ.
5.5
1.1
8.0
4.0
2.0
0.3
0.07
12.0
9.3
Note:
10. A0, B0, and K0 dimensions are determined with respect to the EIA/JEDEC RS-481 rotational and lateral movement
requirements (see sketches A, B, and C).
1.0mm
maximum
10° maximum
Typical component
cavity center line
Typical component
center line
B0
10° maximum component rotation
Sketch A (Side or Front Sectional View)
Component Rotation
1.0mm
maximum
Sketch C (Top View)
A0
Sketch B (Top View)
Component lateral movement
Component Rotation
Shipping Reel Dimension
W1 Measured at Hub
W2 max Measured at Hub
B Min
Dia C
Dia A
max
Dia D
min
Dia N
DETAIL AA
See detail AA
W3
Tape
Width
Dia A
Max.
Dim B
Min.
Dia C
+0.5/–0.2
Dia D
Min.
Dim N
Min.
Dim W1
+2.0/–0
Dim W2
Max.
Dim W3
(LSL–USL)
8
330
1.5
13.0
20.2
178
8.4
14.4
7.9 ~ 10.4
12
330
1.5
13.0
20.2
178
12.4
18.4
11.9 ~ 15.4
16
330
1.5
13.0
20.2
178
16.4
22.4
15.9 ~ 19.4
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
www.fairchildsemi.com
21
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
Tape and Reel Specification
Dimensions are in millimeters unless otherwise noted.
MLP Embossed Tape Dimension
D
P0
T
P2
E
F
K0
Wc
W
B0
Tc
A0
Package
A0
D
D1
E
B0
±0.1 ±0.1 ±0.05 Min. ±0.1
P1
F
±0.1
D1
User Direction of Feed
K0
P1
P0
P2
T
TC
W
WC
±0.1 Typ. Typ. ±0/05 Typ. ±0.005 ±0.3 Typ.
5x5
5.35
5.35
1.55
1.5
1.75
5.5
1.4
8
4
2.0
0.3
0.07
12
9.3
6x6
6.30
6.30
1.55
1.5
1.75
5.5
1.4
8
4
2.0
0.3
0.07
12
9.3
Note:
11. Ao, Bo, and Ko dimensions are determined with respect to the EIA/JEDEC RS-481 rotational and lateral movement
requirements (see sketches A, B, and C).
1.0mm
maximum
10° maximum
B0
10° maximum component rotation
Typical component
cavity center line
Typical component
center line
1.0mm
maximum
Sketch A (Side or Front Sectional View)
Sketch C (Top View)
A0
Sketch B (Top View)
Component Rotation
Component lateral movement
Component Rotation
Shipping Reel Dimension
W1 Measured at Hub
W2 max Measured at Hub
B Min
Dia C
Dia A
max
Dia D
min
Dia N
DETAIL AA
See detail AA
W3
Tape
Width
Dia A
Max.
Dim B
Min.
Dia C
+0.5/–0.2
Dia D
Min.
Dim N
Min.
Dim W1
+2.0/–0
Dim W2
Max.
Dim W3
(LSL–USL)
8
330
1.5
13
20.2
178
8.4
14.4
7.9 ~ 10.4
12
330
1.5
13
20.2
178
12.4
18.4
11.9 ~ 15.4
16
330
1.5
13
20.2
178
16.4
22.4
15.9 ~ 19.4
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
www.fairchildsemi.com
22
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
Tape and Reel Specification (Continued)
Dimensions are in millimeters unless otherwise noted.
2X
3.50
0.10 C
2X
(0.35)
(0.5)
0.10 C
(0.6)
2.5
(0.75)
TERMINAL
A1 CORNER
INDEX AREA
4.50
3.0
0.5
0.5
Ø0.3±0.05
BOTTOM VIEW
X42
0.15
0.05
C A B
C
0.89±0.082
(QA CONTROL VALUE)
0.45±0.05
1.00 MAX
0.21±0.04
0.10 C
C
0.2+0.1
-0.0
0.08 C
0.23±0.05
SEATING PLANE
LAND PATTERN
RECOMMENDATION
Figure 31. Pb-Free, 42-Ball, Ultra Small Scale Ball Grid Array (USS-BGA), JEDEC MO-195, 3.5mm Wide
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
www.fairchildsemi.com
23
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
Physical Dimensions
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
Physical Dimensions (Continued)
Dimensions are in millimeters unless otherwise noted.
(DATUM A)
Figure 32. Pb-Free, 40-Terminal, Molded Leadless Package (MLP), Quad, JEDEC MO-220, 6mm Square
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
www.fairchildsemi.com
24
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Rev. I20
©2005 Fairchild Semiconductor Corporation
FIN24C Rev. 1.0.2
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25
FIN24C µSerDes™Low-Voltage 24-Bit Bi-Directional Serializer/Deserializer
TRADEMARKS