參數(shù)資料
型號(hào)： DS21FT44
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： Digital Transmission Controller
英文描述： DATACOM, FRAMER, PBGA300
封裝： 27 X 27 MM, 1.27 MM PITCH, MCMBGA-300
文件頁數(shù)： 81/117頁
文件大?。?/td> 691K
代理商： DS21FT44
DS21FT44/DS21FF44
66 of 117
18.2. Internal Register Scheme Based On Double-Frame
On the receive side, the RAF and RNAF registers will always report the data as it received in the
Additional and International bit locations. The RAF and RNAF registers are updated with the setting of
the Receive Align Frame bit in Status Register 2 (SR2.6). The host can use the SR2.6 bit to know when
to read the RAF and RNAF registers. It has 250s to retrieve the data before it is lost.
On the transmit side, data is sampled from the TAF and TNAF registers with the setting of the Transmit
Align Frame bit in Status Register 2 (SR2.3). The host can use the SR2.3 bit to know when to update the
TAF and TNAF registers. It has 250s to update the data or else the old data will be retransmitted. Data
in the Si bit position will be overwritten if the framer is programmed: (1) to source the Si bits from the
TSER pin, (2) in the CRC4 mode, or (3) have automatic E-bit insertion enabled. Data in the Sa bit
position will be overwritten if any of the TCR2.3 to TCR2.7 bits are set to one (please see Section 18.1
for details). For more details, see the register descriptions for TCR1 and TCR2 and the transmit data flow
diagram in Section 18.
RAF: RECEIVE ALIGN FRAME REGISTER (Address = 2F Hex)
(MSB)
(LSB)
Si
00
110
11
SYMBOL
POSITION
NAME AND DESCRIPTION
Si
RAF.7
International Bit
0RAF.6
Frame Alignment Signal Bit
0RAF.5
Frame Alignment Signal Bit
1RAF.4
Frame Alignment Signal Bit
1RAF.3
Frame Alignment Signal Bit
0RAF.2
Frame Alignment Signal Bit
1RAF.1
Frame Alignment Signal Bit
1RAF.0
Frame Alignment Signal Bit
RNAF: RECEIVE NON-ALIGN FRAME REGISTER (Address = 1F Hex)
(MSB)
(LSB)
Si
1
A
Sa4
Sa5
Sa6
Sa7
Sa8
SYMBOL
POSITION
NAME AND DESCRIPTION
Si
RNAF.7
International Bit
1
RNAF.6
Frame Non-Alignment Signal Bit
A
RNAF.5
Remote Alarm
Sa4
RNAF.4
Additional Bit 4
Sa5
RNAF.3
Additional Bit 5
Sa6
RNAF.2
Additional Bit 6
Sa7
RNAF.1
Additional Bit 7
Sa8
RNAF.0
Additional Bit 8
相關(guān)PDF資料
PDF描述
DS21Q352 DATACOM, PCM TRANSCEIVER, PBGA256
DS21Q354 DATACOM, PCM TRANSCEIVER, PBGA256
DS21Q41BT DATACOM, FRAMER, PQFP128
DS21Q42TN DATACOM, FRAMER, PQFP128
DS21Q42T DATACOM, FRAMER, PQFP128
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS21FT44+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4X3 E1 Framer E1 Framer E1 Framer RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21FT44N 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4x4 16/4x3 12 Chnl E1/E1 Framer RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21FT44N+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4x4 16/4x3 12 Chnl E1/E1 Framer RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21Q348 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21Q348B 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
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