參數(shù)資料
型號(hào)： T7264
英文描述： T7264 U-Interface 2B1Q Transceiver
中文描述： T7264 U型接口2B1Q收發(fā)器
文件頁數(shù)： 20/54頁
文件大小： 876K
代理商： T7264
20
Lucent Technologies Inc.
Data Sheet
April 1998
T7264 U-Interface 2B1Q Transceiver
K2 Interface Description
(continued)
K2 Bit Levels
Table 15. K2 Data Out (DO) Bit Levels
(+) Active = 1
(–) Active = 0
(T) Transparent
(P) Pulsing
Table 16. K2 Device Control (DC) Bit Levels
(+) Active = 1
(–) Active = 0
(x) Either 1 or 0
Bit Name
Description
True Level
Reset/Idle
Operational
U-Interface Related
B1, B2
D
RSF, TSF
RF, TF
ISDN 64 kbits/s B1, B2 Octet
ISDN 16 kbits/s D Bits
Receive/Transmit Superframe
Receive/Transmit Frame
1
1
1
1
T
T
P
P
+
+
UM Bits
eoc
act
dea
eoc addr, d/m, and info bits
Activate
Deactivate
Primary/Sec. Power Status
Far-end Block Error
NT in Test Mode
Cold Start Only
S/T Activity Indicator
U Only Activation
Network Indicator Bit
Alarm Indication Bit
Reserved
+
+
–
+
–
–
+
+
–
–
–
–
1
0
1
1
1
1
1
1
1
1
1
1
T
1
1
1
1
1
ps1, ps2
febe
ntm
cso
sai
uoa
nib
aib
R
0 or 1
1
1
1
1
1
DS Bits
nebe
xact
oof
Near-end Bit Error
Transceiver Active
Out of Frame
–
+
–
1
0
0
1
1
1
Bit Name
ccrc
istp
lpbk
afrst
ldea
xpcy
Description
True Level
–
–
–
+
+
–
Reset/Idle
x
1
1
1 then x
1 then x
1
Operational
1
0 then x
1
0
0
0
Corrupt the Outgoing crc
Initiate Start-up
Loopback
Reset
Local Deactivate
Transparency
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