參數(shù)資料
型號： CYP15G0101DXA-BBI
廠商： CYPRESS SEMICONDUCTOR CORP
元件分類： 通信及網(wǎng)絡(luò)
英文描述： Single Channel HOTLink II Transceiver
中文描述： SPECIALTY TELECOM CIRCUIT, PBGA100
封裝： 11 X 11 MM, 1.40 MM HEIGHT, BGA-100
文件頁數(shù)： 33/40頁
文件大?。?/td> 527K
代理商： CYP15G0101DXA-BBI
CYP15G0101DXA
PRELIMINARY
Document #: 38-02061 Rev. **
Page 33 of 40
codes C1.7 and C2.7 can be used to force the transmission of
a specific Special Character with a specific running disparity
as required for some special sequences in X3.230.
After powering on, the Receiver may assume either a positive
or negative value for its initial running disparity. Upon reception
of any Transmission Character, the Receiver decides whether
the Transmission Character is valid or invalid according to the
following rules and tables and calculates a new value for its
Running Disparity based on the contents of the received char-
acter.
The following rules for running disparity are used to calculate
the new running-disparity value for Transmission Characters
that have been transmitted (Transmitter
’
s running disparity)
and that have been received (Receiver
’
s running disparity).
Running disparity for a Transmission Character is calculated
from sub-blocks, where the first six bits (abcdei) form one sub-
block and the second four bits (fghj) form the other sub-block.
Running disparity at the beginning of the 6-bit sub-block is the
running disparity at the end of the previous Transmission
Character. Running disparity at the beginning of the 4-bit sub-
block is the running disparity at the end of the 6-bit sub-block.
Running disparity at the end of the Transmission Character is
the running disparity at the end of the 4-bit sub-block.
Running disparity for the sub-blocks is calculated as follows:
1. Running disparity at the end of any sub-block is positive if
the sub-block contains more ones than zeros. It is also pos-
itive at the end of the 6-bit sub-block if the 6-bit sub-block
is 000111, and it is positive at the end of the 4-bit sub-block
if the 4-bit sub-block is 0011.
2. Running disparity at the end of any sub-block is negative if
the sub-block contains more zeros than ones. It is also neg-
ative at the end of the 6-bit sub-block if the 6-bit sub-block
is 111000, and it is negative at the end of the 4-bit sub-block
if the 4-bit sub-block is 1100.
3. Otherwise, running disparity at the end of the sub-block is
the same as at the beginning of the sub-block.
Use of the Tables for Generating Transmission Characters
The appropriate entry in the table is found for the Valid Data
byte or the Special Character byte for which a Transmission
Character is to be generated (encoded). The current value of
the Transmitter
’
s running disparity is used to select the Trans-
mission Character from its corresponding column. For each
Transmission Character transmitted, a new value of the run-
ning disparity is calculated. This new value is used as the
Transmitter
’
s current running disparity for the next Valid Data
byte or Special Character byte to be encoded and transmitted.
Table 19
shows naming notations and examples of valid transmis-
sion characters.
Use of the Tables for Checking the Validity of Received
Transmission Characters
The column corresponding to the current value of the Receiv-
er
’
s running disparity is searched for the received Transmis-
sion Character. If the received Transmission Character is
found in the proper column, then the Transmission Character
is valid and the Data byte or Special Character code is deter-
mined (decoded). If the received Transmission Character is
not found in that column, then the Transmission Character is
invalid. This is called a code violation. Independent of the
Transmission Character
’
s validity, the received Transmission
Character is used to calculate a new value of running disparity.
The new value is used as the Receiver
’
s current running dis-
parity for the next received Transmission Character.
Detection of a code violation does not necessarily show that
the Transmission Character in which the code violation was
detected is in error. Code violations may result from a prior
error that altered the running disparity of the bit stream which
did not result in a detectable error at the Transmission Char-
acter in which the error occurred.
Table 20
shows an example
of this behavior.
Table 19. Valid Transmission Characters
Data
Byte Name
D
IN
or Q
OUT
765
Hex Value
43210
D0.0
000
00000
00
D1.0
000
00001
01
D2.0
000
00010
02
.
.
.
.
.
.
.
.
D5.2
010
00101
45
.
.
.
.
.
.
.
.
D30.7
111
11110
FE
D31.7
111
11111
FF
Table 20. Code Violations Resulting from Prior Errors
RD
Character
D21.1
101010 1001
101010 1011
D21.0
RD
+
+
Character
D10.2
010101 0101
010101 0101
D10.2
RD
+
+
Character
D23.5
111010 1010
111010 1010
Code Violation
RD
+
+
+
+
Transmitted data character
Transmitted bit stream
Bit stream after error
Decoded data character
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CYP15G0101DXB 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Single-channel HOTLink II⑩ Transceiver
CYP15G0101DXB_11 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Single-channel HOTLink II Transceiver Compliant to multiple standards
CYP15G0101DXB_12 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Single-channel HOTLink IIa?￠ Transceiver
CYP15G0101DXB-BBC 功能描述:電信線路管理 IC Single Channel XCVR 1.5Gbps Bckplane COM RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
CYP15G0101DXB-BBI 功能描述:電信線路管理 IC Single Channel XCVR 1.5Gbps Bckplane IND RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
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