ADV3000

Rev. 0 | Page 19 of 28

PARALLEL INTERFACE CONFIGURATION REGISTERS

The parallel interface configuration registers can be directly set using the PP_EN, PP_CH[1:0], PP_EQ, PP_PRE[1:0], and PP_OCL pins.

This interface is only accessible after the part is reset and before any registers are accessed using the serial control interface. The state of

each pin is set by tying it to 3.3 V (Logic 1) or 0 V (Logic 0).

Table 18. Parallel Interface Register Map

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

High speed

switch enable

High speed source select

High Speed

Device Modes

PP_EN

0

0

0

0

PP_CH[1]

PP_CH[0]

Auxiliary

switch enable

Auxiliary switch source select

Auxiliary

Device Modes

1

0

0

0

0

PP_CH[1]

PP_CH[0]

Input termination

on/off select

(termination always on)

Receiver

Settings

1

Source A and Source B input termination pulse-on-source switch select (termination always on)

Input

Termination

Pulse 1

0

0

0

0

0

0

0

0

Source C input termination pulse-on-source switch select (termination always on)

Input

Termination

Pulse 2

0

0

0

0

0

0

0

0

Source A and Source B input equalization level select

Receive

Equalizer 1

PP_EQ

PP_EQ

PP_EQ

PP_EQ

PP_EQ

PP_EQ

PP_EQ

PP_EQ

Source C input equalization level select

Receive

Equalizer 2

PP_EQ

PP_EQ

PP_EQ

PP_EQ

Output pre-emphasis

level select

Output current level

select

Transmitter

Settings

PP_PE[1]

PP_PE[0]

PP_OCL

HIGH SPEED DEVICE MODES REGISTER

PP_EN: High Speed (TMDS) Channels Enable Bit

Table 19. PP_EN Description

PP_EN

Description

0

High speed channels off, low power/standby mode

1

High speed channels on

PP_CH[1:0]: High Speed (TMDS) Switch Source Select Bus

Table 20. High Speed Switch Mode Mapping

PP_CH[1:0]

O[3:0]

Description

00

A[3:0]

High Speed Source A switched to output

01

B[3:0]

High Speed Source B switched to output

10

C[3:0]

High Speed Source C switched to output

11

Illegal Value

AUXILIARY DEVICE MODES REGISTER

The auxiliary (low speed) switch is always enabled when using

the parallel interface.

PP_CH[1:0]: Auxiliary Switch Source Select Bus

Table 21. Auxiliary Switch Mode Mapping

PP_CH[1:0]

AUX_COM[3:0]

Description

00

AUX_A[3:0]

Auxiliary Source A switched

to output

01

AUX_B[3:0]

Auxiliary Source B switched

to output

10

AUX_C[3:0]

Auxiliary Source C switched

to output

11

Illegal Value