TABLE
參數(shù)資料
型號(hào): XRT86VL38IB
廠商: Exar Corporation
文件頁數(shù): 134/160頁
文件大小: 0K
描述: IC LIU/FRAMER T1/E1/J1 8CH 420BG
標(biāo)準(zhǔn)包裝: 40
控制器類型: T1/E1/J1 調(diào)幀器,LIU
電源電壓: 3.3V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 420-BBGA
供應(yīng)商設(shè)備封裝: 420-PBGA
包裝: 托盤
XRT86VL38
70
REV. V1.2.0
OCTAL T1/E1/J1 FRAMER/LIU COMBO - T1 REGISTER DESCRIPTION
TABLE 52: TRANSMIT CHANNEL CONTROL REGISTER 0-23 (TCCR 0-23)
HEX ADDRESS: 0Xn300 TO 0Xn317
BIT
FUNCTION
TYPE
DEFAULT
DESCRIPTION-OPERATION
7
LAPDcntl[1]
R/W
1
Transmit LAPD Control
These bits select which one of the three Transmit LAPD controller is config-
ured to use D/E time slot (Octets 0-23) for transmitting LAPD messages.
The following table presents the different settings of these two bits.
NOTE:
All three Transmit LAPD Controllers can use D/E timeslots for
transmission. However, only Transmit LAPD Controller 1 can use
datalink for transmission. Register 0xn300 represents D/E time slot
0, and 0xn317 represents D/E time slot 23.
6
LAPDcntl[0]
R/W
0
5 - 4 TxZERO[1:0]
R/W
00
Selects Type of Zero Suppression
These bits select the type of zero code suppression used by the
XRT86VL38 device
.
LAPDCNTL[1:0]
LAPD CONTROLLER SELECTED
00
Transmit LAPD Controller 1
01
Transmit LAPD Controller 2
10
The TxDE[1:0] bits in the Transmit Signaling and
Data Link Select Register (TSDLSR - Register
Address - 0xn10A, bit 3-2) determine the data
source for D/E time slots.
11
Transmit LAPD Controller 3
TXZERO[1:0]
TYPE OF ZERO CODE SUPPRESSION SELECTED
00
No zero code suppression is used
01
AT&T bit 7 stuffing is used
10
GTE zero code suppression is used. If GTE zero
code suppression is used, bit 8 is stuffed in non-sig-
naling frame. Otherwise, bit 7 is stuffed in signaling
frame if signaling bit is zero.
11
DDS zero code suppression is used. The value
0x98 replaces the input data
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