Rockwell SoniCrafter BT8960 - Manual (Page 87)

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4.0 Electrical & Mechanical Specifications
4.5 Channel Unit Interface Timing
Bt8960
Single-Chip 2B1Q Transceiver
N8960DSB
Table 4-9. Channel Unit Interface Timing Requirements, Parallel Slave Mode
Symbol Parameter Minimum Maximum Units
18 TBCLK, RBCLK Period (1) T
QCLK
T
QCLK
19 TBCLK , RBCLK Pulse-Width High T
QCLK
÷ 4
20 TBCLK , RBCLK Pulse-Width Low T
QCLK
÷ 4
21 TQ[1,0] Setup prior to TBCLK Active Edge (2) 25 ns
22 TQ[1,0] Hold after TBCLK High/Low (2) 25 ns
Notes: (1). TBCLK and RBCLK must be frequency locked to QCLK though they may have independent phase relationships to QCLK
and to one another.
(2). TBCLK polarity (edge sensitivity) is programmable through the CU Interface Modes Register [cu_interface_modes
0x06].
Table 4-10. Channel Unit Interface Switching Characteristics, Parallel Slave Mode
Symbol Parameter Minimum Maximum Units
23 RQ[1,0] Hold after RBCLK Active Edge (1) 0 ns
24 RQ[1,0] Delay after RBCLK High/Low (1) 100 ns
Notes: (1). RBCLK polarity (edge sensitivity) is programmable through the CU Interface Modes Register [cu_interface_modes;
0x06].
Figure 4-4. Channel Unit Interface Timing, Parallel Slave Mode
Note: TBCLK and RBCLK polarities are programmable through the CU Interface Modes register. The figure depicts both clocks
programmed to falling-edge active.
RQ[1:0]
TBCLK
TQ[1:0]
RBCLK
18
19 20
21 22
23
24
18
19 20