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參數(shù)資料
| 型號： | AK61584 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; No. of Contacts:55; Series:MS27484; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:16; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:16-35 RoHS Compliant: No |
| 中文描述： | 雙低功耗的T1/E1線路接口 |
| 文件頁數(shù)： | 10/38頁 |
| 文件大小： | 364K |
| 代理商： | AK61584 |
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ASAHI KASEI
[AK61584]
0185-E-00 98/04
OVERVIEW
The AK61584 is a universal line interface for
T1/E1 applications, designed for high-volume cards
where low power, high density and universal op-
eration is required. One board design
can support
all T1/E1 short-haul modes. The T1 and E1 modes
can be selected entirely via software.
As shown in Figure 1, the AK61584 provides all
the functions needed for a line interface
including a
line driver, a receiver and jitter attenuator.
The line driver generates waveforms compatible
with E1 (ITU-T G.703),T1 short haul (DSX-1).
The driver internally matches the impedance of the
load, providing excellent return loss. The benefit of
the internal impedance matching is a 50 percent
reduction in power consumption compared to im-
plementing return loss with external resistors. With
external
resistors a driver has
to drive the equiva-
lent of two line loads.
The receiver contains clock and data recovery cir-
cuits.
The jitter attenuator meets AT&T 62411 require-
ments without the use of an external quartz crystal.
The attenuator does require an external reference
clock.
Vcc
Volts
Data Rate
MHz
1.544
2.048
REFCLK Frequency MHz
1XCLK=1 1XCLK=0
1.544 12.352
2.048 16.384
Cable
ohm
100
75
120
R1-R4
ohm
12.5
21.5
34.4
Transformers
T1-T4
1:2
1:1.32
3.3
Figure 7 - Typical Connection Diagram
( Host Mode)
TCLK1
TPOS1
TNEG1
RCLK1
RPOS1
RNEG1
TCLK2
TPOS2
TNEG2
RCLK2
RPOS2
RNEG2
Framer
Framer
0.47uF
0.47uF
470pF
(E1)
470pF
(E1)
R1
R2
R3
R4
T1
1:N
T2
1:N
T3
1:N
T4
1:N
transmit
receive
transmit
receive
Micro Controller
serial port
Control
12.352MHz
Clock
REFCLK
1XCLK
Clock
IPOL
RESET MODE
INT
CS
SCLK SDO SDI
VCC
Control
TTIP1
TRING1
RTIP1
RRING1
TTIP2
TRING2
RTIP2
RRING2
Channel 1
Channel 2
AV+
AGND BGREF TGND2 TV+2 TV+1
1uF
R3
5kohm
Power Supply
TGND1 RGND2 RV+2 RV+1 RGND1 DV+ DGND
+
0.1uF
Vcc
0.1uF
0.1uF
0.1uF
0.1uF
3
+
0.01uF
0.47uF
0.47uF
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