參數(shù)資料
型號(hào): DS26528G+
廠商: Maxim Integrated Products
文件頁(yè)數(shù): 226/276頁(yè)
文件大?。?/td> 0K
描述: IC TXRX T1/E1/J1 OCT 256-CSBGA
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 90
類型: 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù): 4/4
規(guī)程: IEEE 1149.1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 256-LBGA,CSBGA
供應(yīng)商設(shè)備封裝: 256-CSBGA(17x17)
包裝: 托盤
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DS26528 Octal T1/E1/J1 Transceiver
53 of 276
8.9.4.3.6 Receive-Signaling Freeze
The signaling data in the four multiframe signaling buffers is frozen in a known good state upon either a loss of
synchronization (OOF event), carrier loss, or change of frame alignment. In T1 mode, this action meets the
requirements of BellCore TR-TSY-000170 for signaling freezing. To allow this freeze action to occur, the RSFE
control bit (RSIGC.1) should be set high. The user can force a freeze by setting the RSFF control bit (RSIGC.2)
high. The RSIGF output pin provides a hardware indication that a freeze is in effect. The four multiframe buffer
provides a three multiframe delay in the signaling bits provided at the RSIG pin (and at the RSER pin if receive-
signaling reinsertion is enabled). When freezing is enabled (RSFE = 1), the signaling data is held in the last known
good state until the corrupting error condition subsides. When the error condition subsides, the signaling data is
held in the old state for at least an additional 9ms (4.5ms in D4 framing mode, 6ms for E1 mode) before being
allowed to be updated with new signaling data.
The receive-signaling registers are frozen and not updated during a loss-of-sync condition. They will contain the
most recent signaling information before the LOF occurred.
8.9.4.4 Transmit SLC-96 Operation (T1 Mode Only)
In an SLC-96-based transmission scheme, the standard Fs-bit pattern is robbed to make room for a set of
message fields. The SLC-96 multiframe is made up of six D4 superframes, thus it is 72 frames long. In the 72-
frame SLC-96 multiframe, 36 of the framing bits are the normal Ft pattern and the other 36 bits are divided into
alarm, maintenance, spoiler, and concentrator bits, as well as 12 bits of the normal Fs pattern. Additional SLC-96
information can be found in BellCore document TR-TSY-000008. Registers related to the transmit FDL are shown
Table 8-17. Registers Related to SLC-96
REGISTER
FRAMER
ADDRESSES
FUNCTION
Transmit FDL Register (T1TFDL)
162h
For sending messages in transmit SLC-96 Ft/Fs
bits.
Transmit SLC-96 Data Link Registers 1
164h, 165h, 166h
Registers that control the SLC-96 overhead
values.
Transmit Control Register 2 TCR2)
182h
Transmit control for data selection source for the
Ft/Fs bits.
Transmit Latched Status Register 1
190h
Status bit for indicating transmission of data link
buffer.
Receive SLC-96 Data Link Registers 1
064h, 065h, 066h
Receive Latched Status Register 7
096h
Receive SLC-96 alignment event.
Note: The addresses shown are for Framer 1. Addresses for Framers 2 to 8 can be calculated using the following: Framer n = (Framer 1
address + (n - 1) x 200h); where n = 2 to 8 for Framers 2 to 8.
The T1TFDL register is used to insert the SLC-96 message fields. To insert the SLC-96 message using the
T1TFDL register, the user should configure the DS26528 as shown:
TCR2.6 (TSLC96) = 1
Enable transmit SLC-96.
TCR2.7 (TFDLS) = 0
Source FS bits via TFDL or SLC-96 formatter.
TCR3.2 (TFM) = 1
D4 framing mode.
TCR1.6 (TFPT) = 0
Do not “pass through” TSER F-bits.
The DS26528 automatically inserts the 12-bit alignment pattern in the Fs bits for the SLC-96 data link frame. Data
from T1TSLC1:T1TSLC3 is inserted into the remaining Fs-bit locations of the SLC-96 multiframe. The status bit
TSLC96 located at TLS1.4 is set to indicate that the SLC-96 data link buffer has been transmitted and that the user
should write new message data into T1TSLC1:T1TSLC3. The host has 9ms after the assertion of TLS1.4 to write
the registers T1TSLC1:T1TSLC3. If no new data is provided in these registers, the previous values are
retransmitted.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS26528G+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 8-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
DS26528GA2 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
DS26528GA3 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
DS26528GA4 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
DS26528GA5 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 8-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