参数资料
型号: DS21Q58L
厂商: Maxim Integrated Products
文件页数: 11/74页
文件大小: 0K
描述: IC TXRX E1 QUAD 3.3V 100-LQFP
产品培训模块: Lead (SnPb) Finish for COTS
产品变化通告: Product Discontinuation 20/Feb/2012
标准包装: 90
功能: 收发器
接口: E1
电路数: 4
电源电压: 3.14 V ~ 3.47 V
电流 - 电源: 230mA
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 100-LQFP
供应商设备封装: 100-LQFP(14x14)
包装: 托盘
包括: AIS 警报检测器和发生器,回送功能,PRBS 发生器 / 检测器,远程检测器和发生器
DS21Q58 E1 Quad Transceiver
19 of 74
Table 8-1. Sync/Resync Criteria
FRAME OR
MULTIFRAME
LEVEL
SYNC CRITERIA
RESYNC CRITERIA
ITU SPEC.
FAS
FAS present in frame N and N + 2,
and FAS not present in frame N + 1
Three consecutive incorrect FAS received;
alternate (RCR1.2 = 1): if the above criteria
is met or three consecutive incorrect bit 2 of
non-FAS received
G.706
4.1.1
4.1.2
CRC4
Two valid MF alignment words found
within 8ms
915 or more CRC4 codewords out of 1000
received in error
G.706
4.2 and 4.3.2
CAS
Valid MF alignment word found and
previous time slot 16 contains code
other than all zeros
Two consecutive MF alignment words
received in error
G.732 5.2
Register Name:
TCR
Register Description:
Transmit Control Register
Register Address:
11 Hex
Bit #
7
6
5
4
3
2
1
0
Name
IFSS
TFPT
AEBE
TUA1
TSiS
TSA1
TSM
TSIO
NAME
BIT
FUNCTION
IFSS
7
Internal Frame-Sync Select
0 = TSYNC normal
1 = if TSYNC is in the INPUT mode (TSIO = 0), then TSYNC is internally
replaced by the recovered receive frame sync; the TSYNC pin is ignored
1 = if TSYNC is in the OUTPUT mode (TSIO = 1), then TSYNC outputs the
recovered multiframe frame sync
TFPT
6
Transmit Time Slot 0 Pass Through
0 = FAS bits/Sa bits/remote alarm sourced internally from the TAF and TNAF
registers
1 = FAS bits/Sa bits/remote alarm sourced from TSER
AEBE
5
Automatic E-Bit Enable
0 = E-bits not automatically set in the transmit direction
1 = E-bits automatically set in the transmit direction
TUA1
4
Transmit Unframed All Ones
0 = transmit data normally
1 = transmit an unframed all-ones code
TSiS
3
Transmit International Bit Select
0 = sample Si bits at TSER pin
1 = source Si bits from TAF and TNAF registers (In this mode, TCR.6 must be
set to 0)
TSA1
2
Transmit Signaling All Ones
0 = normal operation
1 = force time slot 16 in every frame to all ones
TSM
1
TSYNC Mode Select
0 = frame mode (see the timing diagrams in Section 24.2)
1 = CAS and CRC4 multiframe mode (see the timing diagrams in Section 24.2)
TSIO
0
TSYNC I/O Select
0 = TSYNC is an input
1 = TSYNC is an output
Note: See Figure 24-9 for more details about how the transmit control register affects DS21Q58 operation.
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