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S2050A/D 参数 Datasheet PDF下载

S2050A/D图片预览
型号: S2050A/D
PDF下载: 下载PDF文件 查看货源
内容描述: [Ethernet Transceiver, PQFP52, 10 X 10 MM, COMPACT, PLASTIC, QFP-52]
分类和应用: 以太网:16GBASE-T电信电信集成电路
文件页数/大小: 19 页 / 158 K
品牌: AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
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S2046/S2050  
GIGABIT ETHERNET CHIPSET  
Table 5. S2046 Pin Assignment and Descriptions  
Pin Name  
Level I/O  
Pin # Description  
D19  
D18  
D17  
D16  
D15  
D14  
D13  
D12  
D11  
D10  
D9  
TTL  
I
50  
49  
48  
47  
44  
43  
42  
41  
38  
37  
36  
35  
31  
30  
29  
28  
25  
24  
23  
22  
Parallel Input Data. Data is clocked in on the rising edge of  
REFCLK. In 20-bit mode, D[0] is transmitted first. In 10-bit  
mode, D[10:19] are used, D[0:9] are ignored, and D[10] is  
transmitted first.  
D8  
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
GND  
DWS  
GND  
I
20  
This pin must be connected to ground.  
Static  
TTL  
19  
Data Width Select. The level on this pin selects the parallel data  
bus width. When LOW, a 20-bit parallel bus width is selected,  
and D[0:19] are active. When HIGH, a 10-bit parallel data bus is  
selected, D[10:19] are active and D[0:9] are not used. (See  
Table 1).  
OE1  
Static  
TTL  
I
I
I
1
2
Active LOW Output Enable control for TLX/TLY outputs. When  
inactive, TLX/TLY are disabled and remain in the logic low state.  
OE0  
Static  
TTL  
Active LOW Output Enable control for TX/TY outputs. When  
inactive, TX/TY are disabled and remain in the logic low state.  
REFCLK  
PECL  
16  
Reference Clock. (Externally capacitively coupled.) A crystal-  
controlled reference clock for the PLL clock multiplier. The  
frequency of REFCLK is set by the REFSEL pin. (See Table 1.)  
TCLK  
Diff.  
TTL  
O
O
12  
11  
Transmit Clock. Differential TTL word rate clock true and  
complement. See Table 1 for frequency.  
TCLKN  
TLX  
TLY  
Diff.  
PECL  
5
4
Transmit Serial Loopback Output. Differential PECL outputs that  
are functionally equivalent to TX and TY. They are intended to  
be used for loopback testing. Enabled by OE1. TLX is the  
positive output, and TLY is the negative output.  
TY  
TX  
Diff.  
PECL  
O
9
8
Transmit Serial Output. Differential PECL outputs that transmit  
the serial data and drive 150to ground. Enabled by OE0. TX  
is the positive output, and TY is the negative output.  
March 29, 2000 / Revision B  
7