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參數(shù)資料
| 型號： | DS21552L |
| 英文描述： | 3.3V DS21352 and 5V DS21552 T1 Single-Chip Transceivers |
| 中文描述： | 3.3 DS21352及5V DS21552 T1單芯片收發(fā)器 |
| 文件頁數(shù)： | 29/137頁 |
| 文件大?。?/td> | 1094K |
| 代理商： | DS21552L |
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DS21352/DS21552
29 of 137
8F
90
91
92
93
94
95
96
97
98
99
9A
9B
9C
9D
9E
9F
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
-
-
-
-
-
-
-
-
-
Receive Channel 16
Receive HDLC DS0 Control Register 1
Receive HDLC DS0 Control Register 2
Transmit HDLC DS0 Control Register 1
Transmit HDLC DS0 Control Register 2
Interleave Bus Operation Register
Test 3
SEE NOTE 1
Test 4
SEE NOTE 1
not present
not present
not present
not present
not present
not present
not present
not present
not present
RC16
RDC1
RDC2
TDC1
TDC2
IBO
TEST3 (set to 00h)
TEST4 (set to 00h)
-
-
-
-
-
-
-
-
-
NOTES:
1. TEST1, TEST2, TEST3 and TEST4 registers are used by the factory; these registers must be cleared (set to 00h) on power–
up initialization to insure proper operation.
2. Register banks Axh, Bxh, Cxh, Dxh, Exh, and Fxh are not accessible.
3. Upper nibble of the PCVCR1 register is used for MOSCR1
6. CONTROL, ID, AND TEST REGISTERS
The operation of the DS21352/552 is configured via a set of eleven control registers. Typically, the
control registers are only accessed when the system is first powered up. Once the DS21352/552 has been
initialized, the control registers will only need to be accessed when there is a change in the system
configuration. There are two Receive Control Registers (RCR1 and RCR2), two Transmit Control
Registers (TCR1 and TCR2), and seven Common Control Registers (CCR1 to CCR7). Each of the eleven
registers are described in this section.
6.1 POWER-UP SEQUENCE
On power–up, after the supplies are stable the DS21352/552 should be configured for operation by
writing to all of the internal registers (this includes setting the Test Registers to 00h) since the contents of
the internal registers cannot be predicted on power–up. The LIRST (CCR7.7) should be toggled from
zero to one to reset the line interface circuitry (it will take the DS21352/552 about 40ms to recover from
the LIRST bit being toggled). Finally, after the TSYSCLK and RSYSCLK inputs are stable, the ESR bit
should be toggled from a zero to a one (this step can be skipped if the elastic stores are disabled).
6.2 DEVICE ID
There is a device IDentification Register (IDR) at address 0Fh. The MSB of this read–only register is
fixed to a zero indicating that a T1 device is present. The next 3 MSBs are used to indicate which T1
device is present; DS2152, DS21352, or DS21552. The E1 pin–for–pin compatible SCTs will have a
logic one in the MSB position with the following 3 MSBs indicating which E1 SCT is present; DS2154,
DS21354, or DS21554. Table 6-1 represents the possible variations of these bits and the associated SCT.
IDR: DEVICE IDENTIFICATION REGISTER (Address=0F Hex)
(MSB)
T1E1
(LSB)
ID0
Bit 6
Bit 5
Bit 4
ID3
ID2
ID1
SYMBOL
POSITION
NAME AND DESCRIPTION
T1E1
IDR.7
T1 or E1 Chip Determination Bit.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS21552LN | 3.3V DS21352 and 5V DS21552 T1 Single-Chip Transceivers |
| DS21354 | MTTF is frequently used interchangeably with MTBF |
| DS21354L | 3.3V/5V E1 Single-Chip Transceivers |
| DS21354LN | 3.3V/5V E1 Single-Chip Transceivers |
| DS21354 | 3.3V/5V E1 Single-Chip Transceivers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS21552L+ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 5V T1 Transceiver 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 |
| DS21552LB | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| DS21552LN | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 5V T1 Transceiver 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 |
| DS21552LN+ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 5V T1 Transceiver 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 |
| DS21554 | 制造商:Maxim Integrated Products 功能描述: |
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