參數(shù)資料
型號(hào)： XRT83VSH316IB
廠商： EXAR CORP
元件分類： 數(shù)字傳輸電路
英文描述： 16-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
中文描述： DATACOM, PCM TRANSCEIVER, PBGA316
封裝： 21 X 21 MM, STBGA-316
文件頁數(shù)： 80/96頁
文件大?。?/td> 600K
代理商： XRT83VSH316IB
XRT83VSH316
PRELIMINARY
78
16-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
REV. P1.0.3
T
ABLE
46: M
ICROPROCESSOR
R
EGISTER
0
X
N03
H
B
IT
D
ESCRIPTION
C
HANNEL
N (0
X
N03
H
)
B
IT
N
AME
F
UNCTION
Register
Type
Default
Value
(HW reset)
D7
D6
RxRES1
RxRES0
Receive External Fixed Resistor
RxRES[1:0] are used to select the value for a high precision exter-
nal resistor to improve return loss.
00 = None
01 = 240
10 = 210
11 = 150
R/W
0
0
D5
CODES
Encoding/Decoding Select (Single Rail Mode Only)
0 = HDB3 (E1), B8ZS (T1)
1 = AMI Coding
R/W
0
D4
Reserved
This Bit is Reserved
D3
E1Arben
E1 Arbitrary Pulse Enable
This bit is used to enable the Arbitrary Pulse Generator for shaping
the transmit pulse shape when E1 mode is selected. If this bit is
set to "1", this channel will be configured for the Arbitrary Mode.
Each channel is individually controlled by programming the chan-
nel registers 0xN08 through 0xN0F, where n is the number of the
channel.
"0" = Disabled (Normal E1 Pulse Shape ITU G.703)
"1" = Arbitrary Pulse Enabled
R/W
0
D2
INSBPV
Insert Bipolar Violation
When this bit transitions from a "0" to a "1", a bipolar violation will
be inserted in the transmitted data from TPOS, QRSS/PRBS pat-
tern. The state of this bit will be sampled on the rising edge of
TCLK. To ensure proper operation, it is recommended to write a
"0" to this bit before writing a "1".
R/W
0
D1
INSBER
Insert Bit Error
When this bit transitions from a "0" to a "1", a bit error will be
inserted in the transmitted QRSS/PRBS pattern. The state of this
bit will be sampled on the rising edge of TCLK. To ensure proper
operation, it is recommended to write a "0" to this bit before writing
a "1".
R/W
0
D0
Reserved
This Bit is Reserved
R/W
0
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