DS90UB964-Q1 Datasheet, PDF (29/116 Pages) Texas Instruments – DS90UB964-Q1 Quad FPD-Link III Deserializer Hub

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DS90UB964-Q1
SNLS500 – JULY 2016
Camera A A1
A2
A3
A4
Camera B B1
B2
B3
Camera C C1
C2
C3
C4
Camera D D1
D2
D3
D4
FPD-Link III
Serializer
FPD-Link III
Serializer
FPD-Link III
Serializer
FPD-Link III
Serializer
CSI-2 port0, 1 CK lane, up to 4 data lanes
A1 B1 C1 A2 B2 C2 A3 B3 C3 A4 C4
HUB
Deserializer
Color of the packet
represents the VC-ID
CAM B has less packets
(because CAM A and CAM C &
D have, e.g. embedded data)
Not shown:
One FS packet
for each VC-ID
D1 D2 D3 D4
Each CSI-2 port can carry data
from 1,2,3, or all cameras,
depending on bandwidth
CSI-2 port1, 1 CK lane, up to 4 data lanes
Figure 25. Four Camera Data onto CSI-2 With Virtual Channels (VC-ID) With Different Frame Size
Camera A A1
A2
A3
A4
FPD-Link III
Serializer
CSI-2 port0, 1 CK lane, up to 4 data lanes
A1 B1 C1 D1 A2 B2 C2 D2 A3 B3 C3 A4 C4
Camera B B1
B2
B3
Camera C C1
C2
C3
C4
Camera D D1
D2
FPD-Link III
Serializer
FPD-Link III
Serializer
FPD-Link III
Serializer
HUB
Deserializer
Camera B and Camera D
have less packets
A1 B1 C1 D1 A2 B2 C2 D2 A3 B3 C3 A4 C4
CSI-2 port1, 1 CK lane, up to 4 data lanes
Port1 can be the
Replica of Port0
Figure 26. Four Camera Data onto 1xCSI-2 Replicated With Virtual Channels (VC-ID) With Different Frame
Size
8.4.15 CSI-2 Transmitter Frequency
The CSI-2 Transmitters may operate at 400 or 800 Mbps or 1.6 Gbps. This operation is controlled via the
CSI_PLL_CTL 0x1F register.
CSI_PLL_CTL[1:0]
00
01
10
11
CSI-2 TX Frequency
1.6 Gbps
1.472 Gbps
Reserved
800 Mbps
400 Mbps
REFCLK Frequency
25 MHz
23 MHz
Reserved
25 MHz
25 MHz
When configuring to 800 Mbps or 1.6 Gbps, the CSI-2 timing parameters are automatically set based on the
CSI_PLL_CTL 0x1F register. In the case of 400 Mbps, the respective CSI-2 timing parameters registers must be
programmed, and the appropriate override bit needs to be set. To enable CSI-2 400 Mbps mode, set the
following registers:
# Set CSI Timing parameters
WriteI2C(0xB0,0x2) # set auto-increment, page 0
WriteI2C(0xB1,0x40) # CSI Port 0
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