参数资料
型号: SI5100-EVB
厂商: Silicon Laboratories Inc
文件页数: 6/48页
文件大小: 0K
描述: BOARD EVALUATION FOR SI5100
标准包装: 1
主要目的: 接口,SONET/SDH,收发器
已用 IC / 零件: SI5100
已供物品: 主板和子卡组套
其它名称: 336-1136
Si5100/Si5110-EVB
Line Loopback
When configured in line-loopback mode, the device
Si5100/Si5110
passes the received/recovered data and timing to the
transmitter. The transmitter buffers the data through the
FIFO and filters the jitter using the loop-bandwidth
selected by BWSEL[1:0]. Operation in line loopback
mode is depicted in Figure 5. Jumper settings for line
loopback mode are given in Tables 1, 3 (Si5100), and 4
(Si5110). This mode of operation is attainable with both
versions of the motherboard.
Full-Duplex
RXDIN
TXDOUT
TXREFCLK
TXCLK
Receiver
Transmitter
Figure 6. Full Duplex
RXDOUT
RXCLK1
TXCLK16IN/
TXCLK4IN
TXDIN
This mode is identical to normal operation of the device
in a system. TX and RX can be asynchronous (up to
±300 ppm) so all timing is independent. TXCLK16IN is
Si5100/Si5110
chosen as the transmitter CMU reference clock via the
Receiver
RXDOUT
REFSEL pin. Operation in full-duplex mode is depicted
in Figure 6. Jumper settings for full-duplex mode are
RXDIN
RXCLK1
given in Tables 1, 3 (Si5100), and 4 (Si5110). If the
loopback motherboard is used, the full-duplex mode
effectively becomes an external loopback mode, and
TXDOUT
TXREFCLK
TXCLK
Transmitter
TXCLK16IN/
TXCLK4IN
TXDIN
RXCLK1 should be connected to TXCLK16IN/
TXCLK4IN to clock in the data.
Diagnostic Loopback (Parallel Side Loopback)
This mode passes the data present on the transmit
parallel inputs (TXDIN[15:0] for Si5100; TXDIN[3:0] for
Si5110) to the receive parallel data outputs
(RXDOUT[15:0] for Si5100; RXDOUT[3:0] for Si5110).
TXCLK16IN/TXCLK4IN is chosen as the transmitter
CMU reference clock via the REFSEL pin. Operation in
diagnostic loopback mode is depicted in Figure 7.
Jumper settings for diagnostic loopback mode are given
in Tables 2, 3 (Si5100), and 4 (Si5110). The full-duplex
motherboard is required for this mode.
Si5100/Si5110
Figure 7. Diagnostic Loopback
Receiver
RXDOUT
RXDIN
RXCLK1
6
TXDOUT
TXREFCLK
TXCLK
Transmitter
Figure 5. Line Loopback
TXCLK16IN/
TXCLK4IN
TXDIN
Preliminary Rev. 0.5
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