PTN3361BBS,518 NXP Semiconductors, PTN3361BBS,518 Datasheet - Page 14

• Manufacturer Part Number: PTN3361BBS,518
• Description: IC LEVEL SHIFTER 48HVQFN
• Manufacturer: NXP Semiconductors
• Type: Level Shifterr

Specifications of PTN3361BBS,518

• Applications: DisplayPort to HDMI, DVI Adapters
• Mounting Type: Surface Mount
• Package / Case: 48-VQFN Exposed Pad, 48-HVQFN, 48-SQFN, 48-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-5057-2; 935287824518

NXP Semiconductors
PTN3361B_2
Product data sheet
7.6.1 Slave address
7.5 Active DDC buffer with rise time accelerator
7.6 I
The PTN3361B DDC channel, besides providing 3.3 V to 5 V level shifting, includes active
buffering and rise time acceleration which allows up to 18 meters bus extension for
reliable DDC applications. While retaining all the operating modes and features of the
I
bidirectional buffering for both the data (SDA) and the clock (SCL) line as well as the
rise time accelerator on the sink-side port (SCL_SINK and SDA_SINK) enabling the bus
to drive a load up to 1400 pF or distance of 18 m on port A, and 400 pF on the
source-side port (SCL_SOURCE and SCA_SOURCE). Using the PTN3361B for DVI or
HDMI level shifting enables the system designer to isolate bus capacitance to meet HDMI
DDC version 1.3 distance specification. The SDA and SCL pins are overvoltage tolerant
and are high-impedance when the PTN3361B is unpowered or when DDC_EN is LOW.
PTN3361B has rise time accelerators on the sink-side port (SCL_SINK and SDA_SINK)
only. During positive bus transitions on the sink-side port, a current source is switched on
to quickly slew the SCL_SINK and SDA_SINK lines HIGH once the 5 V DDC bus V
threshold level of around 1.5 V is exceeded, and turns off as the 5 V DDC bus V
threshold voltage of approximately 3.5 V is approached.
The PTN3361B includes an on-board I
detect the presence of an HDMI dongle by the system through the DDC channel,
accessible via ports SDA_SOURCE and SCL_SOURCE. This allows system vendors to
detect HDMI dongle presence through the already available DDC/I
predetermined bus sequence. Please see
For the I
should be tied HIGH. When DDET is LOW, the PTN3361B will not respond to an I
command. When used in an HDMI dongle, the DDET function must be enabled for correct
operation in accordance with DisplayPort interoperability guidelines. When used in a DVI
dongle, the DDET function must be disabled.
The HDMI dongle detection is accomplished by accessing the PTN3361B on-board
I
2
2
2
Fig 4.
C-bus system during the level shifts, it permits extension of the I
C-bus slave ROM using a simple sequential I
C-bus based HDMI dongle detection
2
C-bus HDMI Dongle Detect function to be active, input pin DDET (dongle detect)
R = 1; W = 0
PTN3361B slave address
Rev. 02 — 7 October 2009
bit 7
1
HDMI/DVI level shifter with dongle detect and DDC buffer
bit 6
0
bit 5
0
slave address
2
C-bus slave ROM which provides a means to
bit 4
0
Section 8
bit 3
2
0
C-bus Read operation as described below.
bit 2
0
for more information.
bit 1
0
002aad340
R/W
bit 0
2
2
C-bus by providing
PTN3361B
C-bus port using a
© NXP B.V. 2009. All rights reserved.
IH
2
C-bus
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IL