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XRT86VL30
45
SINGLE T1/E1/J1 FRAMER/LIU COMBO - T1 REGISTER DESCRIPTION
REV. 1.0.1
1-0
TxIMODE[1:0]
R/W
00
(Continued)
Transmit backplane interface signals include:
TxSERCLK is an input clock at 1.544MHz
TxMSYNC will become the highspeed input clock at 12.352 or 16.384MHz to
input high-speed multiplexed data on the back-plane interface
TxSYNC can be configured as a single frame or super-frame boundary,
depending on the setting of bit 5 of register 0x0109
TxSER is the high-speed data input
NOTE: In high speed mode, transmit data is sampled on the rising edge of the
12Mhz or 16MHz clock edge.
TABLE 29: TRANSMIT INTERFACE CONTROL REGISTER (TICR)
HEX ADDRESS:0X0120
BIT
FUNCTION
TYPE
DEFAULT
DESCRIPTION-OPERATION
TABLE 31: TRANSMIT INTERFACE SPEED WHEN MULTIPLEXED MODE IS
ENABLED (TXMUXEN = 1)
TXIMODE[1:0]
TRANSMIT INTERFACE SPEED
00
Bit-Multiplexed Mode at 12.352MHz is Enabled:
Transmit backplane interface is taking four-channel mul-
tiplexed data at a rate of 12.352Mbit/s from channel 0
and bit-demultiplexing the serial data into 4 channels
and output to the line on channels 0 through 3. The
TxSYNC signal pulses “High” during the framing bit of
each DS-1 frame.
01
Bit-Multiplexed Mode at 16.384MHz is Enabled:
Transmit backplane interface is taking four-channel mul-
tiplexed data at a rate of 16.384Mbit/s from channel 0
and bit-demultiplexing the serial data into 4 channels
and output to the line on channels 0 through 3. The
TxSYNC signal pulses “High” during the framing bit of
each DS-1 frame.
10
HMVIP High-Speed Multiplexed Mode Enabled:
Transmit backplane interface is taking four-channel mul-
tiplexed data at a rate of 16.384Mbit/s from channel 0
and byte-demultiplexing the serial data into 4 channels
and output on channels 0 through 3. The TxSYNC signal
pulses “High” during the last two bits of the previous DS-
1 frame and the first two bits of the current DS-1 frame.
11
H.100 High-Speed Multiplexed Mode Enabled:
Transmit backplane interface is taking four-channel mul-
tiplexed data at a rate of 16.384Mbit/s from channel 0
and byte-demultiplexing the serial data into 4 channels
and output to the line on channels 0 through 3. The
TxSYNC signal pulses “High” during the last bit of the
previous DS-1 frame and the first bit of the current DS-1
frame.