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| 型號： | MC92610VF |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PBGA324 |
| 封裝： | 19 X 19 MM, 1.76 MM HEIGHT, 1 MM PITCH, PLASTIC, MS-034AAG-1, MAPBGA-324 |
| 文件頁數(shù)： | 42/104頁 |
| 文件大?。?/td> | 1595K |
| 代理商： | MC92610VF |
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3-12
MC92610 SERDES User’s Manual
MOTOROLA
Receiver Functional Description
be set high for at least two clock cycles and then released to force all devices to re-establish
word synchronization.
3.3.4.4
Recommended Mode States for Word Synchronization
Word synchronization can only be used with certain operating modes and has limited
application in others. Table 3-2 describes the relationship between modes and word
synchronization.
Table 3-2. Word Synchronization States
Mode
Signals
Recommended
State
Description
Word Synchronization
WSE
High
Enables word synchronization.
Byte Synchronization
BSYNC
High
Word synchronization depends upon Idle character
detection. Byte alignment is required for Idle
detection.
Add/Delete Idle
ADIE
High
When enabled, allows the receiver to add/delete
Idle patterns in order to maintain word alignment.
This is the recommended operating mode when the
Reference Clock is being used to time the receiver
interface (RCCE set low) and there is a frequency
offset between the transmitter and receiver. Idles
are added or dropped to maintain word alignment.
Recovered Clock
RCCE
Low
The receiver interface must be timed with the
Reference Clock when utilizing multi-chip word
synchronization. Timing errors will occur on the
word synchronization bus if RCCE is high.
If utilizing single chip word synchronization, then
either the Recovered Clock or the Reference Clock
may be used to time the receiver interface. RCCE
may be set as it best suites the application.
Receiver Interface
Clock Select
RECV_REF_A
High
If utilizing single chip word synchronization and
using the Recovered Clock (RCCE set high) then
receiver A’s recovered clock must be used for all
receivers.
The data at the receiver interfaces will be skewed if
the individual receiver recovered clocks
(RECV_REF_A set low) are used to time the
receiver interfaces.
Transceiver Disable
XCVR_x_DISABLE
Low
All four transceivers must be enabled for word
synchronization.
Repeater Mode
REPE
Low
Word synchronization is not recommended in
Repeater mode.
Ten-Bit Interface
TBIE
n/a
When enabled, the Idle character must be part of
the TBI code set.
When disabled, the Idle is naturally supported by
the 8B/10B codes.
Link Multiplexer Mode
LME
n/a
Word synchronization operates normally in Link
Multiplexer mode.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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