参数资料
型号: DS26503LN+
厂商: Maxim Integrated Products
文件页数: 119/122页
文件大小: 0K
描述: IC T1/E1/J1 BITS ELEMENT 64-LQFP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 160
类型: BITS 元件,多路复用器
PLL:
主要目的: T1/E1
输入: 时钟
输出: 时钟
电路数: 1
比率 - 输入:输出: 2:2
差分 - 输入:输出: 无/无
频率 - 最大: 6.312MHz
电源电压: 3.135 V ~ 3.465 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-LQFP(10x10)
包装: 托盘
产品目录页面: 1430 (CN2011-ZH PDF)
DS26503 T1/E1/J1 BITS Element
96 of 122
15. 6312kHz SYNCHRONIZATION INTERFACE
The DS26503 has a 6312kHz Synchronization Interface mode of operation that conforms with Appendix
II.2 of G.703, with the exception that the DS26503 transmits a square wave as opposed to the sine wave
that is defined in the G.703 specification.
15.1 Receive 6312kHz Synchronization Interface Operation
On the receive interface, a 6312kHz sine wave is accepted conforming to the input port requirements of
G.703 Appendix II. Alternatively, a 6312kHz square wave will also be accepted. A 6312kHz square wave
is output on RCLK in the receive direction. RS is not driven in this mode and will be three-stated.
Table 15-1. Specification of 6312kHz Clock
Signal at Input Port
Frequency
6312kHz
Signal format
Sinusoidal wave
Alarm condition
Alarm should not be occurred against
the amplitude ranged
-16dBm to +3dBm
15.2 Transmit 6312kHz Synchronization Interface Operation
On the transmit interface, a nominally 50% duty cycle, 6312kHz square wave at standard logic levels is
available from the PLL_OUT pin. In normal operation, the TCLKO pin will output the same signal.
However, if remote loopback is enabled then TCLKO will be replaced with the recovered receive clock.
See Figure 3-1. The G.703 requirements for the 6312kHz transmitted signal are shown in Table 15-2. The
user must provide an external circuit to convert the TCLKO or PLL_OUT signal to the level and
impedance required by G.703. The RSER and TS pins are ignored in this mode. TTIP and TRING will be
three-stated in this mode.
Table 15-2. Specification of 6312kHz Clock
Signal at Output Port
Frequency
6312kHz
Load impedance
75
Ω resistive
Transmission media
Coaxial pair cable
Amplitude
0dBm
± 3dBm
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