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參數(shù)資料
| 型號： | SBPH400-3 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | IEEE1394 3-Port 400Mbps Physical Layer |
| 中文描述： | IEEE1394連接3端口400Mbps的物理層 |
| 文件頁數(shù)： | 6/43頁 |
| 文件大?。?/td> | 285K |
| 代理商： | SBPH400-3 |
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SBPH400-3
2
Functional Description
2.1
Transmitter and receiver port interface
Figure 2.1
Analog port schematic
The SBPH400-3 implements three cable interface transceiver ports. Each port operates
independently from the other ports, under control of the device control logic. Each port
provides two pairs of signals, denoted TPA, TPA#, and TPB, TPB#. Each signal is
implemented using a driver and a receiver connected to a single pin (total of four pins per port).
In various modes, the driver and receiver are enabled, either separately or both at the same
time (for bi-directional signalling).
+
-
55
55
Strb_Tx
Strb_Enable
+
-
Data_Rx
+
+
-
-
+
-
7k
55
55
+
-
+
+
-
-
+
-
Twisted Pair A
Twisted Pair B
VG
TPA
TPA*
TPB
TPB*
VG
TpB ias’
0.3
μ
f
min
D river
R eceiver
Arb_A_Rx
A rbitration
Comparators
S200_ref
S200
Speed_Tx
S400
Speed_Tx
Data_Tx
Data_Enable
Strb_Rx
Arbitration
Com parators
Arb_B_Rx
Bias
0.8V
Common mode speed
signal current
5k
±
5%
250pF
(shared with TPA
and otherports)
7k
7k
7k
TpBias detection comparator
I
CD
Physical connection
detection comparator
Con
TpBias disable
+
-
S400_ref
S400
Speed_Rx
S200
Speed_Rx
2
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