SNLS589B September 2016 – July 2018 DS90UB960-Q1
During normal operation, CSI-2 transmitter output bandwidth is reduced as it needs to transition between Low-Power and High-Speed modes. The minimum CSI-2 High-Speed data transmission overhead consists of TLPX, THS-PREPARE, THS-ZERO, THS-SYNC, THS-TRAIL, and THS-EXIT as illustrated in Figure 6. The bandwidth is further reduced when operating in Discontinuous CSI-2 Clock mode as the CSI-2 clock requires additional overhead time to transition between Low-Power and Clock Transmission modes. The minimum CSI-2 Discontinuous Clock timing overhead consists of TCLK-POST, TCLK-TRAIL, TCLK-PREPARE, TCLK-ZERO, and TCLK-PRE as illustrated in Figure 7. The typical CSI-2 timing overhead is given in Table 16.
|CSI-2 TX Data Rate||CSI-2 TX Overhead, tCSI_Overhead [µs]|
|Continuos CSI-2 Clock (0x33=1)||Discontinuous CSI-2 Clock (0x33=0)|
For Best-Effort Round Robin, Basic Synchronized or Line-Interleaved CSI-2 Forwarding, the maximum CSI-2 bandwidth for each CSI-2 port is defined in Equation 1.
For Line-Concatenated CSI-2 Forwarding, the maximum CSI-2 output bandwidth for each CSI-2 port is defined in Equation 2.