bt8970 Mindspeed Technologies, bt8970 Datasheet - Page 80

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

5.0 Electrical & Mechanical Specifications
5.5 Channel Unit Interface Timing
Figure 5-4. Channel Unit Interface Timing, Parallel Slave Mode
Table 5-11. Channel Unit Interface Timing Requirements, Serial Mode
Table 5-12. Channel Unit Interface Switching Characteristics, Serial Mode
5-8
Symbol
Symbol
NOTE(S):
TBCLK and RBCLK polarities are programmable through the CU Interface Modes register. The figure depicts both clocks
programmed to falling-edge active.
25
26
27
28
29
30
31
32
33
TDAT Setup prior to BCLK Falling Edge
TDAT Hold after BCLK Low
BCLK Period
BCLK Pulse-Width High
BCLK Pulse-Width Low
BCLK Hold after HCLK Rising Edge
BCLK Delay after HCLK High
RDAT, QCLK Hold after BCLK Rising Edge
RDAT, QCLK Delay after BCLK High
RQ[1:0]
RBCLK
TQ[1:0]
TBCLK
Preliminary Information/Conexant Proprietary and Confidential
Parameter
Parameter
19
Conexant
19
18
21
23
18
24
20
22
20
T
T
QCLK
QCLK
Minimum
T
QCLK
–50
Minimum
—
—
0
Single-Chip HDSL Transceiver
4 – 20
4 – 20
100
25
2
T
T
QCLK
QCLK
Maximum
T
Maximum
QCLK
—
50
—
50
—
—
4 + 20
4 + 20
2
100101B
Bt8970
Units
100101_016
Units
—
ns
ns
ns
ns
ns
ns
ns
ns