XRT86L30
SINGLE T1/E1/J1 FRAMER/LIU COMBO
REV. 1.0.1
TABLE 46: TRANSMIT
I
NTERFACE
CONTROL
REGISTER - T1 MODE
R
EGISTER 32 - T1 MODE
TRANSMIT
I
NTERFACE ONTROL
C
R
EGISTER (TICR)
HEX ADDRESS:0X0120
B
IT UNCTION
F
TYPE
D
EFAULT
DESCRIPTION-OPERATION
4
TxFr1544
R/W
0
If TxMUXEN = 0 and TxIMODE[1:0] = 00
0 = TxChn[4:0] will output the channel number as usual.
1 = TxChn[0]/TxSig will input signaling information and TxChn[1]/TxFrTD will
input
fractional channel data in 1.544 Mbit mode.
NOTE: This bit has no effect while either TxMUXEN = 1 or TxIMODE[1:0] =
00, TxChn[4:0] signals input TxSig and fractional data.
3
2
TxICLKINV
TxMUXEN
R/W
R/W
0
0
Clock Inversion
0 = Data transition occurs on rising edge of the transmit clock.
1 = Data transition occurs on falling edge of the transmit clock.
Mux Enable
0 = No channel multiplexing.
1 = Four channels are multiplexed in single serial stream.
1
0
TxIMODE[1]
TxIMODE[0]
R/W
R/W
0
0
Tx Intf Mode selection
This mode selection determines the interface speed.
When TxMUXEN = 0
00 = Transmit interface is taking data at a rate of 1.544Mbit/s.
01 = Transmit interface is taking data at a rate of 2.048Mbit/s.
10 = Transmit interface is taking data at a rate of 4.096Mbit/s.
11 = Transmit interface is taking data at a rate of 8.192Mbit/s.
When TxMUXEN = 1,
00 = Transmit interface is taking data at a rate of 12.352Mbit/s from channel 0
and bit-demultiplexing into 4 channels from to the LIU outputs on channels 0
through 3. The TxSYNC pulse remains “High” during the framing bit of each
DS-1 frame.
01 = Transmit interface is taking data at a rate of 16.384Mbit/s from channel 0
and bit-demultiplexing into 4 channels from to the LIU outputs on channels 0
through 3. The TxSYNC pulse remains “High” during the framing bit of each
DS-1 frame.
10 = Transmit interface is taking data at a rate of 16.384Mbit/s from channel 0
and byte-demultiplexing into 4 channels from to the LIU outputs on channels 0
through 3 (HMVIP Mode). The TxSYNC pulse remains “High” during the last
two bits of the previous DS-1 frame and the first two bits of the current DS-1
frame.
11 = Transmit interface is taking data at a rate of 16.384Mbit/s from channel 0
and byte-demultiplexing into 4 channels from to the LIU outputs on channels 0
through 3 (H.100 Mode). The TxSYNC pulse remains “High” during the last bit
of the previous DS-1 frame and the first bit of the current DS-1 frame.
NOTE: Channel 4 is de-multiplexed into the LIU outputs at channel 4 through
7.
65
EXAR [ EXAR CORPORATION ]
