參數(shù)資料
型號: XRT91L30IQTR
廠商: Exar Corporation
文件頁數(shù): 15/40頁
文件大?。?/td> 0K
描述: IC TXRX SONET/SDH 8BIT 64QFP
標準包裝: 1,000
類型: 收發(fā)器
規(guī)程: SONET/SDH
電源電壓: 3.3V
安裝類型: 表面貼裝
封裝/外殼: 64-FQFP
供應(yīng)商設(shè)備封裝: 64-PQFP(10x10)
包裝: 帶卷 (TR)
XRT91L30
18
STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
REV. 1.0.2
bit de-interleaves the serial data input into an 8-bit parallel output to RXDO[7:0]. A simplified block diagram is
shown in Figure 8. XRT91L30 clocks data out on RXDO[7:0] at the falling edge of RXPCLKO.
2.8
Receive Parallel Output Interface
The 8-bit Single-Ended LVTTL running at 77.76 Mbps (STS-12/STM-4) or 19.44 Mbps (STS-3/STM-1) parallel
data output of the receive path is used to interface to a SONET Framer/ASIC synchronized to the recovered
clock. A simplified block diagram is shown in Figure 9.
2.9
Disable Parallel Receive Data Output Upon LOS
The parallel receiver outputs are automatically pulled "Low" or forced to a logic state of "0" during a LOS
condition to prevent data chattering unless LOS detection is disabled by asserting DLOSDIS and keeping
LOSEXT input pin "high." In addition, the user can also assert LOSEXT input pin "low" from the optical
module to force an LOS and mute the parallel receiver outputs as well (while DLOSDIS input is also low, see
FIGURE 8. SIMPLIFIED BLOCK DIAGRAM OF SIPO
FIGURE 9. RECEIVE PARALLEL OUTPUT INTERFACE BLOCK
b00
b01
b02
b03
bn0
bn1
bn2
bn3
bn+0
bn+1
bn+2
bn+3
b70
b71
b72
b73
8-bit Parallel LVTTL Output Data
RXDO0
RXDO7
RXDOn+
RXDOn
RXIP/N
RXPCLKO
b30 b20 b10 b00
b70 b60 b50 b40
b33 b23 b13
b43
b53
b63
b73
S
IP
O
77.76 MHz (STS-12/STM-4) or 19.44 MHz (STS-3/STM-1)
622.08 Mbps STS-12/STM-4 or
155.52 Mbps STS-3/STM-1 serial data rate
SONET Framer/ASIC
XRT91L30
STS-12/STM-4
or
STS-3/STM-1
Transceiver
RXPCLKO
RXDO[7:0]
8
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