參數(shù)資料
型號： XRT86VL34_2
廠商： Exar Corporation
元件分類： 通信及網(wǎng)絡
英文描述： Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述： Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁數(shù)： 84/156頁
文件大?。?/td> 816K
代理商： XRT86VL34_2
XRT86VL34
79
QUAD T1/E1/J1 FRAMER/LIU COMBO - T1 REGISTER DESCRIPTION
REV. V1.2.0
T
ABLE
58: LAPD B
UFFER
0 C
ONTROL
R
EGISTER
(LAPDBCR0) H
EX
A
DDRESS
: 0
X
n600
B
IT
F
UNCTION
T
YPE
D
EFAULT
D
ESCRIPTION
-O
PERATION
7-0
LAPD Buffer 0
R/W
0
LAPD Buffer 0 (96-Bytes) Auto Incrementing
This register is used to transmit and receive LAPD messages within
buffer 0 of the HDLC controller. Any one of the three HDLC control-
ler can be chosen in the LAPD Select Register (0xn11B). Users
should determine the next available buffer by reading the BUFAVAL
bit (bit 7 of the Transmit Data Link Byte Count Register 1 (address
0xn114), Register 2 (0xn144) and Register 3 (0xn154) depending on
which HDLC controller is selected. If buffer 0 is available, writing to
buffer 0 will insert the message into the outgoing LAPD frame after
the LAPD message is sent and the data from the transmit buffer
cannot be retrieved.
After detecting the Receive end of transfer interrupt (RxEOT), users
should read the RBUFPTR bit (bit 7 of the Receive Data Link Byte
Count Register 1 (address 0xn115), Register 2 (0xn145), or Regis-
ter 3 (0xn155) depending on which HDLC controller is selected) to
determine which buffer contains the received LAPD message ready
to be read. If RBUFPTR bit indicates that buffer 0 is available to be
read, reading buffer 0 (Register 0xn600) continuously will retrieve
the entire received LAPD message.
N
OTE
:
When writing to or reading from Buffer 0, the register is
automatically incremented such that the entire 96 Byte
LAPD message can be written into or read from buffer 0
(Register 0xn600) continuously.
T
ABLE
59: LAPD B
UFFER
1 C
ONTROL
R
EGISTER
(LAPDBCR1) H
EX
A
DDRESS
: 0
X
n700
B
IT
F
UNCTION
T
YPE
D
EFAULT
D
ESCRIPTION
-O
PERATION
7-0
LAPD Buffer 1
R/W
0
LAPD Buffer 1 (96-Bytes) Auto Incrementing
This register is used to transmit and receive LAPD messages within
buffer 1 of the HDLC controller. Any one of the three HDLC control-
ler can be is chosen in the LAPD Select Register (0xn11B). Users
should determine the next available buffer by reading the BUFAVAL
bit (bit 7 of the Transmit Data Link Byte Count Register 1 (address
0xn114), Register 2 (0xn144) and Register 3 (0xn154) depending on
which HDLC controller is selected. If buffer 1 is available, writing to
buffer 1 will insert the message into the outgoing LAPD frame after
the LAPD message is sent and the data from the transmit buffer 1
cannot be retrieved.
After detecting the Receive end of transfer interrupt (RxEOT), users
should read the RBUFPTR bit (bit 7 of the Receive Data Link Byte
Count Register 1 (address 0xn115), Register 2 (0xn145), or Regis-
ter 3 (0xn155) depending on which HDLC controller is selected) to
determine which buffer contains the received LAPD message ready
to be read. If RBUFPTR bit indicates that buffer 1 is available to be
read, reading buffer 1 (Register 0xn700) continuously will retrieve
the entire received LAPD message.
N
OTE
:
When writing to or reading from Buffer 0, the register is
automatically incremented such that the entire 96 Byte
LAPD message can be written into or read from buffer 0
(Register 0xn600) continuously.
相關PDF資料
PDF描述
XRT86VL34IB Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
XRT86VL38_2 Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
XRT86VL38IB Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
XRT86VL38IB484 Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
XRT86VL38_07 Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
相關代理商/技術參數(shù)
參數(shù)描述
XRT86VL34ES 功能描述:網(wǎng)絡控制器與處理器 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 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
XRT86VL34IB 功能描述:網(wǎng)絡控制器與處理器 IC 4 IND FULL DPLX FIFO TWO-FRAME, CAS, CCS 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 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
XRT86VL34IB-F 功能描述:網(wǎng)絡控制器與處理器 IC 4-Ch T1/E1/J1 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 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
XRT86VL38 制造商:EXAR 制造商全稱:EXAR 功能描述:OCTAL T1/E1/J1 FRAMER/LIU COMBO - T1 REGISTER DESCRIPTION
XRT86VL38_07 制造商:EXAR 制造商全稱:EXAR 功能描述:OCTAL T1/E1/J1 FRAMER/LIU COMBO - E1 REGISTER DESCRIPTION
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