SPFD54124B Drise, SPFD54124B Datasheet - Page 117

• Manufacturer Part Number: SPFD54124B
• Description: 396-Channel 6-Bit Source Driver
• Manufacturer: Drise

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7.2.4.1.2 Read Functions
The read mode of the interface means that the micro controller reads register value from the Driver. To do the micro controller first has to
send a command (Read ID or register command) and then the following byte is transmitted in the opposite direction. After the read status
command has been sent, the SDA lin must be set to tri-state no later than at the falling edge of SCL of the last bit.
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3-Pin Serial Protocol (for RDID1/RDID2/RDID3/0Ah/0Bh/0Ch/0Dh/0Eh/0Fh command: 8-bit read)
3-Pin Serial Protocol (for RDDID command: 24-bit read)
3-Pin Serial Protocol (for RDDST command: 32-bit read)
CSX
SCL
SDA
(SDI)
SDA
(SDO)
CSX
SCL
SDA
(SDI)
SDA
(SDO)
CSX
SCL
SDA
(SDI)
SDA
(SDO)
S
S
S
D/CX
D/CX D7
D/CX
D7
D7
D6
D6
D6
High-Z
High-Z
D5
D5
D5
High-Z
D4
D4
D4
Fig. 7.2.4.1.2 3-pin Serial interface Read protocol
TB
TB
TB
D3
D3
D3
D2
D2
D2
D1
D1
D1
D0
D0
D0
D7
D23 D22 D21
D31 D30 D29
117
D6
Dummy Clock Cycle
Dummy Clock Cycle
D5
High-Z
D4
High-Z
TB
High-Z
D20 D19
D28 D27
D3
D2
D1 D0
TB
TB
D3
P
D3
S
D2
SPFD54124B
D/CX
D2
D1 D0
Preliminary
D1 D0
Preliminary Version: 0.6
P
S
P
APR. 26, 2007
D/CX
S
D/CX