bt8970 Mindspeed Technologies, bt8970 Datasheet - Page 71

• Manufacturer Part Number: bt8970
• Description: Single-chip Hdsl Transceiver
• Manufacturer: Mindspeed Technologies

Bt8970
Single-Chip HDSL Transceiver
0x7B—Equalizer Microcode Write Select Register (eq_microcode_add_write)
A 6-bit read/write register representing an unsigned binary address defined over a range of 0 to 63 decimals.
When written, it causes all 32 bits of the Access Data Register [access_data_byte[3:0]; 0x7C–0x7F] to be
subsequently written to the selected equalizer microprogram store location within two symbol periods. Does not
affect the value of the access data register. Factory-developed equalizer microcode is included with the no-fee
licensed HDSL transceiver software available from Rockwell.
0x7C–0x7F—Access Data Register (access_data_byte3:0)
A 4-byte read/write register stores filter coefficient, equalizer register file, and equalizer microprogram store
contents during indirect accesses to these RAM-based locations. Writes to addresses 0x70 through 0x7B, utilize
the contents of this shared register as specified in each of the individual register descriptions.
100101B
7
–
6
–
Preliminary Information/Conexant Proprietary and Confidential
D[5]
5
D[4]
4
Conexant
D[3]
3
D[2]
2
D[1]
1
4.0 Register
D[0]
0
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