CAT6613 Ver la hoja de datos (PDF) - Unspecified

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CAT6613

HDMI 1.3 Transmitter

Unspecified 

CAT6613 Datasheet

Configuration and Function Control

The CAT6613 includes two serial programming ports by default (i.e. with embedded HDCP keys): one

for interfacing with micro-controller, the other for accessing the DDC channels of HDMI link. The serial

programming interface for interfacing the micro-controller is a slave interface, comprising PCSCL (Pin

48) and PCSDA (Pin 49). The micro-controller uses this interface to monitor all the statuses and

control all the functions. Two device addresses are available, depending on the input logic level of

PCADR (Pin 50). If PCADR is pulled high by the user, the device address is 0x9A. If pulled low, 0x98.

The I2C interface for accessing the DDC channels of the HDMI link is a master interface, comprising

DDCSCL (Pin 46) and DDCSDA (Pin 47). the CAT6613 uses this interface to read the EDID data and

perform HDCP authentication protocol with the sink device over the HDMI cable.

For temporarily storing the acquired EDID data, the CAT6613 embedded a dedicated FIFO of 32 bytes.

The micro-controller may command the CAT6613 to acquire 32 bytes of EDID information at a time,

read them back and then continue to read the next 32 bytes until all neccessary EDID informations are

retrieved.

The HDCP protocol of the CAT6613 is completely implemented in hardware. No software intervention

is needed except for revocation list checking. Various HDCP-related statuses are stored in HDCP

registers for the reference of micro-controller. Refer to CAT6613 Programming Guide for detailed

register descriptions. The HDCP Standard also specifies a special message read protocol other than

the standard I2C protocol. See Figure 4 for checking HDCP port link integrity.

S Slave Addr (7) R A Read Data (8) A Read Data (8) A Read Data (8) NA P

S=Start; R=Read; A=Ack; NA=No Ack; P=Stop

Figure 4. HDCP port link integrity message read

All serial programming interfaces conform to standard I2C transactions and operate at up to 100kHz.

The CAT logo is a registered trademark of Chip Advanced Technology

2008 Chip Advanced Technology Inc. – All Right Reserved.

Mar-2010 Rev:1.0 13/37

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