2006 Teridian Semiconductor Corporation Rev." />
參數(shù)資料
型號(hào): 78P2351-DB-CMI
廠商: Maxim Integrated Products
文件頁(yè)數(shù): 13/42頁(yè)
文件大小: 0K
描述: DEMO BOARD 78P2351
標(biāo)準(zhǔn)包裝: 1
系列: *
78P2351
Single Channel
OC-3/ STM1-E/ E4 LIU
Page: 20 of 42
2006 Teridian Semiconductor Corporation
Rev. 2.4
PIN DESCRIPTION (continued)
CONTROL PINS
NAME
PIN
TYPE
DESCRIPTION
FRST
59
CIT
FIFO Phase-Initialization Control:
When asserted, the transmit FIFO pointers are reset to the respective
“centered” states. Also resets the FIERR interrupt bit. De-assertion edge of
FRST will resume FIFO operation.
Low: FRST assertion.
Float/High: Normal
Because the internal VCO clock and off-chip transmit clocks may not be stable
during transmit power-up, it is recommended to always reset the FIFOs after
powering up the IC or the transmitter.
Not valid during Plesiochronous Serial Mode.
RCSL
14
CID
Redundant Channel Selection:
Enables the redundant Transmit Monitor Output at pins CMI2P/N.
Low: Normal operation (CMIP/N active only)
High: Transmit Monitor Mode (CMIP/N and CMI2P/N active)
LPBK
15
CIT
Analog Loopback Selection:
Low: Normal operation
Float: Remote Loopback Enable: Recovered receive data and clock
are looped back to the transmitter for retransmission.
High: Local Loopback Enable: The serial transmit data is looped back
and used as the input to the receiver.
CKMODE
13
CIT
Clock Mode Selection:
Selects the method of inputting transmit data into the chip. See
TRANSMITTER OPERATION section for more information.
In PARALLEL mode (SDI_PAR high):
Low: Parallel transmit clock is input to the 78P2351.
Float: Parallel transmit clock is input to the 78P2351. Loop-timing
mode enabled.
High: Parallel transmit clock is output from the 78P2351
In SERIAL mode (SDI_PAR low):
Low: Reference clock is synchronous to transmit clock and data. Data
is clocked in with SICKP/N and passed through a FIFO
Float: Reference clock is synchronous to transmit data. Clock is
recovered with a CDR and data is passed through a FIFO
High: Reference clock is plesiochronous to transmit data. Clock is
recovered with a CDR and the FIFO is bypassed
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