BT8954 CONEXANT [Conexant Systems, Inc], BT8954 Datasheet - Page 72

• Manufacturer Part Number: BT8954
• Description: VOICE PAIR GAIN FRAMER
• Manufacturer: CONEXANT [Conexant Systems, Inc]

4.0 Registers
4.10 Reset
4.10 Reset
The Reset Write registers are listed in
Table 4-8. Reset Write Registers
Writing any data value to SCR_RST sets the 23 stages of the scrambler LFSR to 0x000001. SCR_RST is used
during Conexant production test to verify scrambler operation and is not required during normal operation.
Writing any data value to TFIFO_RST empties the TFIFO. The MC must write TFIFO_RST whenever the
TFIFO reports an overflow or underflow [TSTATUS_1; 0xE7], and after the PLL has settled. Each write to
TFIFO_RST may cause up to three TFIFO errors to be reported in subsequent DSL frames. Therefore, the MC
must ignore up to three TFIFO errors reported after writing the TFIFO_RST command.
Writing any data value to TSFIFO_PTR_RST resets the pointer to the transmit signaling input FIFOs.
Writing any data value to RSFIFO_PTR_RST resets the pointers to the receive signaling FIFOs.
4-20
0xD3—Scrambler Reset (SCR_RST)
0xD4—Transmit FIFO Reset (TFIFO_RST)
0xD5—Reset Pointer to Transmit Signaling FIFOs (TSFIFO_PTR_RST)
0xD6—Reset Pointer to Receive Signaling FIFOs (RSFIFO_PTR_RST)
Address
0xD3
0xD4
0xD5
0xD6
0xD7
0xD8
0xD9
0xDA
0xDB
0xDC
UPDATE_TSFIFO_O
RSFIFO_PTR_RST
TSFIFO_PTR_RST
UPDATE_RSFIFO
Register Label
RFIFO_RST
TFIFO_RST
SYNC_RST
SCR_RST
ERR_RST
RX_RST
Table
4-8.
Conexant
Receive Framer Synchronization Reset
RSFIFO Pointer Reset
TSFIFO Pointer Reset
Transmit FIFO Reset
Name/Description
Receive FIFO Reset
Error Count Reset
Update RSFIFO_O
Update TSFIFO_O
Scrambler Reset
Reset Receiver
Voice Pair Gain Framer
N8954DSC
Bt8954