TCS3414CS TAOS, TCS3414CS Datasheet - Page 10

• Manufacturer Part Number: TCS3414CS
• Description: Photodiodes TriColor Sensor RGB, Clear Ch
• Manufacturer: TAOS
• Type: Digital Color Light Sensorr

Specifications of TCS3414CS

• Peak Wavelength: 470 nm
• Maximum Rise Time: 300 ns
• Maximum Fall Time: 300 ns
• Package / Case: Chipscale-6
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Product: Ambient Light Sensor
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TCS3404CS, TCS3414CS
DIGITAL COLOR LIGHT SENSORS
TAOS068 − FEBRUARY 2009
SMBus and I
10
Copyright E 2009, TAOS Inc.
Each Send and Write protocol is, essentially, a series of bytes. A byte sent to the TCS3404/14 with the most
significant bit (MSB) equal to 1 will be interpreted as a COMMAND byte. The lower four bits of the COMMAND
byte form the register select address (see Table 1), which is used to select the destination for the subsequent
byte(s) received. The TCS3404/14 responds to any Receive Byte requests with the contents of the register
specified by the stored register select address.
The TCS3404/14 implements the following protocols of the SMB 2.0 specification:
D
D
D
D
D
D
D
The TCS3404/14 implements the following protocols of the Philips Semiconductor I
D
D
When an SMBus Block Write or Block Read is initiated (see description of COMMAND Register), the byte
following the COMMAND byte is ignored but is a requirement of the SMBus specification. This field contains
the byte count (i.e. the number of bytes to be transferred). The TCS3404 (SMBus) device ignores this field and
extracts this information by counting the actual number of bytes transferred before the Stop condition is
detected.
When an I
SMBus protocol specification. Data bytes continue to be transferred from the TCS3414 (I
until a NACK is sent by the Master.
The data formats supported by the TCS3404 and TCS3414 devices are:
D
D
D
For a complete description of SMBus protocols, please review the SMBus Specification at
http://www.smbus.org/specs. For a complete description of I
at http://www.semiconductors.philips.com.
Send Byte Protocol
Receive Byte Protocol
Write Byte Protocol
Write Word Protocol
Read Word Protocol
Block Write Protocol
Block Read Protocol
I
I
Master transmitter transmits to slave receiver (SMBus and I
−
Master reads slave immediately after the first byte (SMBus only):
−
Combined format (SMBus and I
−
2
2
C Write Protocol
C Read (Combined Format) Protocol
The transfer direction in this case is not changed.
At the moment of the first acknowledgment (provided by the slave receiver) the master transmitter
becomes a master receiver and the slave receiver becomes a slave transmitter.
During a change of direction within a transfer, the master repeats both a START condition and the slave
address but with the R/W bit reversed. In this case, the master receiver terminates the transfer by
generating a NACK on the last byte of the transfer and a STOP condition.
2
2
C Protocols
C Write or I
2
C Read (Combined Format) is initiated, the byte count is also ignored but follows the
r
2
C):
www.taosinc.com
2
C protocols, please review the I
2
C):
r
The LUMENOLOGY r Company
2
C specification:
2
C) device to Master
2
C Specification