Datasheet

DS26514 4-Port T1/E1/J1 Transceiver
19-5856; Rev 4; 5/11 221 of 305
Register Name:
THFC
Register Description:
Transmit HDLC-64 FIFO Control Register
Register Address:
187h + (200h x (n - 1)) : where n = 1 to 4
Bit #
7
6
5
4
3
2
1
0
Name
—
—
—
—
—
—
TFLWM1
TFLWM0
Default
0
0
0
0
0
0
0
0
Bits 1 and 0: Transmit HDLC-64 FIFO Low Watermark Select (TFLWM[1:0])
TFLWM1
TFLWM0
Transmit FIFO Watermark
0
0
4 bytes
0
1
16 bytes
1
0
32 bytes
1
1
48 bytes
Register Name:
TIBOC
Register Description:
Transmit Interleave Bus Operation Control Register
Register Address:
188h + (200h x (n - 1)) : where n = 1 to 4
Bit #
7
6
5
4
3
2
1
0
Name
—
—
—
IBOSEL
IBOEN
—
—
—
Default
0
0
0
0
0
0
0
0
Bit 4: Interleave Bus Operation Select (IBOSEL). This bit selects channel or frame interleave mode.
0 = Channel Interleave.
1 = Frame Interleave.
Bit 3: Interleave Bus Operation Enable (IBOEN)
0 = Interleave Bus Operation disabled.
1 = Interleave Bus Operation enabled.
Register Name:
TDS0SEL
Register Description:
Transmit DS0 Channel Monitor Select Register
Register Address:
189h + (200h x (n - 1)) : where n = 1 to 4
Bit #
7
6
5
4
3
2
1
0
Name
—
—
—
TCM4
TCM3
TCM2
TCM1
TCM0
Default
0
0
0
0
0
0
0
0
Bits 4 to 0: Transmit Channel Monitor Bits (TCM[4:0]). TCM0 is the LSB of a 5-bit channel select that
determines which transmit channel data will appear in the
TDS0M register. Channels 1 through 32 are represented
by a 5-bit BCD code from 0 to 31. TCM[0:4] = all 0s selects channel 1, TCM[0:4] = 11111 selects channel 32.