參數(shù)資料
型號(hào)： DS26524
廠商： Maxim Integrated Products, Inc.
英文描述： Quad T1/E1/J1 Transceiver
中文描述： 四路T1/E1/J1收發(fā)器
文件頁(yè)數(shù)： 34/273頁(yè)
文件大?。?/td> 1212K
代理商： DS26524
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DS26524 Quad T1/E1/J1 Transceiver
34 of 273
8.8.1.7 Mapping E1 Channels onto a 1.544MHz Backplane
The user can use the RSCLKM bit (
RIOCR
.4) to enable the receive elastic store to operate with a 1.544MHz
backplane (24 channels / frame + F-bit). In this mode the user can choose which of the E1 time slots will be
ignored (not transmitted onto RSER) by programming the Receive Blank Channel Select registers
(
RBCS1
:RBCS4). A logic 1 in the associated bit location causes the elastic store to ignore the incoming E1 data for
that channel. Typically the user will want to program eight channels to be ignored. The default (power-up)
configuration will ignore channels 25 to 32, so that the first 24 E1 channels are mapped into the 24 channels of the
1.544MHz backplane. In this mode the F-bit location at RSER is always set to 1.
For example, if the user wants to ignore E1 time slots 0 (channel 1) and TS16 (channel 17), the
RBCS1
:
RBCS4
registers would be programmed as follows:
RBCS1
= 01h
RBCS2
= 00h
RBCS3
= 01h
RBCS4
= FCh
8.8.2 IBO Multiplexer
The Interleaved Bus Operation (IBO) multiplexer is used in conjunction with the IBO function located within each
framer/formatter block (controlled by the
RIBOC
and
TIBOC
registers). When enabled, the IBO multiplexer
simplifies user interface by connecting bus signals internally. The IBO multiplexer eliminates the need for ganged
external wiring and tri-state output drivers on the RSER and RSIG pins. This option provides a more controlled,
cleaner, and lower power mode of operation.
Note that the channel block signals TCHBLK and RCHBLK are output at the rate of the of IBO selection. Hence, a
4.096MHz IBO would have the channel blocks (if programmed active at the rate of 4.096MHz). The particular
blocking channel would be active for a duration of the channel if programmed.
The DS26524 also supports the traditional mode of IBO operation by allowing complete access to individual
framers, and tri-stating the RSER and RSIG pins at the appropriate times for external bus wiring. This mode of
operation is enabled per framer in the associated
RIBOC
and
TIBOC
registers, while leaving the IBO multiplexer is
disabled (IBOMS0 = 0 and IBOMS1 = 0).
Figure 8-3
,
Figure 8-4
, and
Figure 8-5
show the equivalent internal circuit for each IBO mode.
Table 8-4
describes
the pin function changes for each mode of the IBO multiplexer.
Table 8-4. Registers Related to the IBO Multiplexer
REGISTER
FRAMER
ADDRESSES
FUNCTION
Global Transceiver Control Register 1
(
GTCR1
)
0F0h
This is a global register for all four framers. It can be
used to specify ganged operation for the IBO.
This register can be used for control of how many
framers and the corresponding speed for the IBO
links for the receiver.
Receive Interleave Bus Operation
Control Register (
RIBOC
)
088h
Transmit Interleave Bus Operation
Control Register (
TIBOC
)
188h
This register can be used for control of how many
framers and the corresponding speed for the IBO
links for the transmitter.
Note:
The addresses shown are for Framer 1. Addresses for Framers 2 to 4 can be calculated by using the following: Framer n = (Framer 1
address + (n - 1) x 200h), where n = 2 to 4 for Framers 2 to 4.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS26524_07 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:Quad T1/E1/J1 Transceiver
DS26524DK 功能描述:網(wǎng)絡(luò)開(kāi)發(fā)工具 DS26524 Dev Kit RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類(lèi)型:Ethernet to Wi-Fi Bridges 工具用于評(píng)估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類(lèi)型:802.11 b/g, Ethernet 工作電源電壓:3.3 V
DS26524G 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4-Port E1/T1/J1 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
DS26524G+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4-Port E1/T1/J1 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
DS26524GA4 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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