参数资料
型号: CS8952-IQZ
厂商: Cirrus Logic Inc
文件页数: 60/81页
文件大小: 0K
描述: IC TXRX 100/10 PHY 100TQFP
标准包装: 90
类型: 收发器
规程: MII
电源电压: 4.75 V ~ 5.25 V
安装类型: 表面贴装
封装/外壳: 100-LQFP
供应商设备封装: 100-TQFP(14x14)
包装: 托盘
产品目录页面: 759 (CN2011-ZH PDF)
其它名称: 598-1208
CS8952
CrystalLAN 100BASE-X and 10BASE-T Transceiver
63
DS206F1
TX_NRZ+/- termination components should be
placed as close to the fiber transceiver as possible,
while RX_NRZ+/- and SIGNAL+/- termination
components should be placed close to the CS8952.
The CS8952 100BASE-FX interface IO pins
(TX_NRZ+, TX_NRZ-, RX_NRZ+, RX_NRZ-,
SIGNAL+, and SIGNAL-) may be left unconnect-
ed if a fiber interface is not used.
7.3
Internal Voltage Reference
A 4.99 k
biasing resistor must be connected be-
tween the CS8952 RES pin and ground. This resis-
tor biases the internal analog circuits of the CS8952
and should be placed as close as possible to RES
pin. Connect the other end of this resistor directly
to the ground plane. Connect the adjacent CS8952
ground pins (pins 85 and 87) to the grounded end of
the resistor forming a “shield” around the RES con-
nection.
7.4
Clocking Schemes
The CS8952 may be clocked using one of three
possible schemes: using a 25 MHz crystal and the
internal oscillator, using an external oscillator sup-
+5
1 H
Ferrite Bead
0.1 F
1 H
Ferrite Bead
0.1 F
+5
68
82
191
130
SIGNAL-
SIGNAL+
TX_NRZ-
TX_NRZ+
RX_NRZ-
RX_NRZ+
CS8952
+5
49.9
49.9
63.4
0.1 F
+5
82
82
130
130
SD
TD-
TD+
RD-
RD+
RxV
TxV
RxV
TxV
CC
EE
CC
EE
8
9
4
5
6
7
4
5
6
7
8
3
2
1
9
HFBR-5103
FIBER TRANS.
Figure 7. Recommended Connection of Fiber Port
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