Philips PNX2000 Service Manual

PNX2000

Audio video input processor

		Rev. 01 – 04 May 2004	Preliminary data

1. General description

The PNX2000 is a companion IC for use with the Nexperia™ 1 digital video home entertainment engines such as PNX8526 and PNX8550.

The PNX2000 is always used in combination with the PNX3000.

PNX2000 is intended for mid to high-end analog and hybrid TV sets, performing input decoding of single stream analog audio and single stream analog video signals. In addition, the PNX2000 is used for decoding and presentation of all audio output streams in the system. Figure 1 shows a block diagram of the device.

2. Features

■Detection of PAL, NTSC or SECAM, and various 1fH and 2fH component video input sources.

■Full support for 1fH and 2fH video sources; progressive and interlaced.

■Decoding for global VBI Standards (WST, WSS, VPS, CC, VITC).

■ITU-656 output interface.

■Global multi-standard audio demodulation and decoding.

■Dolby Pro Logic II™ 2 multi-channel audio decoding and post-processing.

■Advanced fully programmable audio post-processing functions, including psychoacoustic spatial algorithms for optimal loudspeaker matching.

3. Applications

■Analog TV receivers.

■Hybrid TV receivers.

■DVD recorders.

■VCRs.

1.Nexperia is a trademark of Koninklijke Philips Electronics N.V.

2.Dolby is a trademark of Dolby Laboratories

Philips Semiconductors		PNX2000
		Audio video input processor
4. Ordering information
Table 1: Ordering information
Type number	Package	Description	Version
	name
PNX2000HL	LQFP144	plastic low profile quad flat package; 144 leads; body 20 × 20 × 1.4 mm	SOT486-1

5. Block diagram

DLINK2

DLINK1 DLINK3

PNX2000

audio data SIF or L/R

I2C-bus I2C-BUS

INT GTU

13.5 MHz or

27 MHz CLOCKS Xtal

				DEMDEC DSP
6× I2S-bus
outputs				AUDIO DSP
6× I2S-bus			×4			×6	×2
inputs
		PNX3000
		interface
		(2 stereo
		or 4 mono)

video data CVBS, Y/C, YUV 54 MHz clock

27 Msps or 54 Msps

I2D

HSYNC

VIDDEC

HSYNC/

VSYNC

DCU

ITU-656

PI-bus

BCU

mce559

ITU-656

1fH or 2fH

10-bit data

Fig 1. Block diagram

9397 750 12066

© Koninklijke Philips Electronics N.V. 2004. All rights reserved.

Preliminary data

Rev. 01 – 04 May 2004

2 of 26

Philips Semiconductors	PNX2000
	Audio video input processor

6.Pinning information

6.1Pinning

144	109
1	108

PNX2000HL

36

37

72

73

001aaa287

Fig 2. Pin configuration

6.1.1Pin description

Table 2 describes acronyms used in the pin tables:

Table 2:	Acronym description
Acronym	Description
3V	3.3 V LVCMOS
5VT	5 V tolerant inputs
Z	3-state
TTL	TTL logic
TTL-H	TTL with hysteresis
CMOS	CMOS logic
IA	Input Analog
ID	Input Digital
OD	Output Digital
OA	Output Analog
IOA	I/O Analog
IOD	I/O Digital
GA	Ground Analog
SA	Supply Analog
SD	Supply Digital
OSCIN	Crystal Oscillator Input
OSCOUT	Crystal Oscillator Output
OSCGND	Crystal Oscillator Ground

9397 750 12066

© Koninklijke Philips Electronics N.V. 2004. All rights reserved.

Preliminary data

Rev. 01 – 04 May 2004

3 of 26

Philips Semiconductors				PNX2000
				Audio video input processor
	Table 3:	I2D pins
	Symbol	Pin	Type	Description
	DLINK1DP	2	IA	analog differential data link 1 positive termination
	DLINK1DN	3	IA	analog differential data link 1 negative termination
	DLINK1SP	4	IA	analog differential strobe link 1 positive termination
	DLINK1SN	5	IA	analog differential strobe link 1 negative termination
	DLINK2DP	7	IA	analog differential data link 2 positive termination
	DLINK2DN	8	IA	analog differential data link 2 negative termination
	DLINK2SP	9	IA	analog differential strobe link 2 positive termination
	DLINK2SN	10	IA	analog differential strobe link 2 negative termination
	DLINK3DP	12	IA	analog differential data link 3 positive termination
	DLINK3DN	13	IA	analog differential data link 3 negative termination
	DLINK3SP	14	IA	analog differential strobe link 3 positive termination
	DLINK3SN	15	IA	analog differential strobe link 3 negative termination
	Table 4:	Audio pins
	Symbol	Pin	Type	Description
	ADAC1	104	OA	digital audio output 1
	ADAC2	107	OA	digital audio output 2
	ADAC3	110	OA	digital audio output 3
	ADAC4	113	OA	digital audio output 4
	ADAC5	116	OA	digital audio output 5
	ADAC6	119	OA	digital audio output 6
	ADAC7	122	OA	digital audio output 7
	ADAC8	125	OA	digital audio output 8
	ADAC9	128	OA	digital audio output 9
	ADAC10	131	OA	digital audio output 10
	ADAC11	134	OA	digital audio output 11
	ADAC12	137	OA	digital audio output 12
	ADAC1_P	103	SA	Positive analog reference derived via emitter follower from
				PNX3000 V_SND pin.
	ADAC1_N	105	GA	Negative analog reference star connected at PNX3000.
	ADAC2_P	108	SA	Positive analog reference derived via emitter follower from
				PNX3000 V_SND pin.
	ADAC2_N	106	GA	Negative analog reference star connected at PNX3000.
	ADAC3_P	109	SA	Positive analog reference derived via emitter follower from
				PNX3000 V_SND pin.
	ADAC3_N	111	GA	Negative analog reference star connected at PNX3000.
	ADAC4_P	114	SA	Positive analog reference derived via emitter follower from
				PNX3000 V_SND pin.
	ADAC4_N	112	GA	Negative analog reference star connected at PNX3000.
	ADAC5_P	115	SA	Positive analog reference derived via emitter follower from
				PNX3000 V_SND pin.
	ADAC5_N	117	GA	Negative analog reference star connected at PNX3000.
9397 750 12066				© Koninklijke Philips Electronics N.V. 2004. All rights reserved.

Preliminary data

Rev. 01 – 04 May 2004

4 of 26

Philips Semiconductors					PNX2000
					Audio video input processor
	Table 4:	Audio pins…continued
	Symbol	Pin	Type	Description
	ADAC6_P	120	SA	Positive analog reference derived via emitter follower from
				PNX3000 V_SND pin.
	ADAC6_N	118	GA	Negative analog reference star connected at PNX3000.
	ADAC7_P	121	SA	Positive analog reference derived via emitter follower from
				PNX3000 V_SND pin.
	ADAC7_N	123	GA	Negative analog reference star connected at PNX3000.
	ADAC8_P	126	SA	Positive analog reference derived via emitter follower from
				PNX3000 V_SND pin.
	ADAC8_N	124	GA	Negative analog reference star connected at PNX3000.
	ADAC9_P	127	SA	Positive analog reference derived via emitter follower from
				PNX3000 V_SND pin.
	ADAC9_N	129	GA	Negative analog reference star connected at PNX3000.
	ADAC10_P	132	SA	Positive analog reference derived via emitter follower from
				PNX3000 V_SND pin.
	ADAC10_N	130	GA	Negative analog reference star connected at PNX3000.
	ADAC11_P	133	SA	Positive analog reference derived via emitter follower from
				PNX3000 V_SND pin.
	ADAC11_N	135	GA	Negative analog reference star connected at PNX3000.
	ADAC12_P	138	SA	Positive analog reference derived via emitter follower from
				PNX3000 V_SND pin.
	ADAC12_N	136	GA	Negative analog reference star connected at PNX3000.
	Table 5:	I2S-bus pins
	Symbol		Pin	Type	Description
	I2S_IN_SD1		88	ID	I2S-bus data in channel 1; TTL; 5VT
	I2S_IN_SD2		87	ID	I2S-bus data in channel 2; TTL; 5VT
	I2S_IN_SD3		86	ID	I2S-bus data in channel 3; TTL; 5VT
	I2S_IN_SD4		85	ID	I2S-bus data in channel 4; TTL; 5VT
	I2S_IN_SD5		84	ID	I2S-bus data in channel 5; TTL; 5VT
	I2S_IN_SD6		83	ID	I2S-bus data in channel 6; TTL; 5VT
	I2S_OUT_SD1		77	OD	I2S-bus data out channel 1; CMOS
	I2S_OUT_SD2		76	OD	I2S-bus data out channel 2; CMOS
	I2S_OUT_SD4		75	OD	I2S-bus data out channel 4; CMOS
	I2S_OUT_SD5		74	OD	I2S-bus data out channel 5; CMOS
	I2S_OUT_SD6		73	OD	I2S-bus data out channel 6; CMOS
	I2S_OUT_SD3_SCK		71	OD	I2S-bus bit clock channel 3; CMOS
	I2S_OUT_SD3_WS		70	OD	I2S-bus word select channel 3; CMOS
	I2S_OUT_SD3		69	OD	I2S-bus data-out channel 3; CMOS
	I2S_SCK_SYS		79	IOD	I2S-bus system bit clock; TTL-H; CMOS
	I2S_WS_SYS		78	IOD	I2S-bus system word select; TTL-H; CMOS
	ADAC_CLK		89	OD	Used for 128 fs or 256 fs clock output to external audio
					DAC; CMOS.
9397 750 12066					© Koninklijke Philips Electronics N.V. 2004. All rights reserved.

Preliminary data

Rev. 01 – 04 May 2004

5 of 26

Philips Semiconductors					PNX2000
					Audio video input processor
	Table 6:	VIDDEC pins
	Symbol		Pin	Type	Description
	HVINFO		20	OD	horizontal and vertical sync information to PNX3000; CMOS
	HSYNCFBL1		18	IA	horizontal sync (external); fastblanking signal from SCART
	HSYNCFBL2		19	IA	horizontal sync (external); fastblanking signal from SCART
	VSYNC1		21	ID	vertical sync (external); TTL; 5VT
	VSYNC2		22	ID	vertical sync (external); TTL; 5VT
	Table 7:	ITU-656 pins
	Symbol		Pin	Type	Description
	DVO_DATA_0		55	OD	digital video output state 0; CMOS; Z; 5VT
	DVO_DATA_1		56	OD	digital video output state 1; CMOS; Z; 5VT
	DVO_DATA_2		57	OD	digital video output state 2; CMOS; Z; 5VT
	DVO_DATA_3		58	OD	digital video output state 3; CMOS; Z; 5VT
	DVO_DATA_4		60	OD	digital video output state 4; CMOS; Z; 5VT
	DVO_DATA_5		61	OD	digital video output state 5; CMOS; Z; 5VT
	DVO_DATA_6		62	OD	digital video output state 6; CMOS; Z; 5VT
	DVO_DATA_7		63	OD	digital video output state 7; CMOS; Z; 5VT
	DVO_DATA_8		64	OD	digital video output state 8; CMOS; Z; 5VT
	DVO_DATA_9		65	OD	digital video output state 9; CMOS; Z; 5VT
	DVO_VALID		52	OD	digital video data valid; CMOS; Z; 5VT
	DVO_CLK		51	OD	digital video output clock; CMOS; Z; 5VT
	LL_CLK		50	ID	reserved; TTL; 5VT[1]

[1]It is recommended to bias this pad with a 10 kΩ resistor

Table 8:	JTAG pins
Symbol	Pin	Type	Description
TDO	93	OD	JTAG test data out; CMOS
TDI	92	ID	JTAG test data in; TTL-H; 5VT
TCK	94	ID	JTAG test clock; TTL-H; 5VT
TRST_N[1]	96	ID	JTAG reset (active low); TTL-H; 5VT
TMS	95	ID	JTAG test mode select; TTL-H; 5VT

[1]It is recommended to pull-down TRST_N with a 10 kΩ resistor. This ensures correct reset state of internal TAP circuitry and correct POR of the device within defined state machine.

Table 9:	I2C-bus pins
Symbol	Pin	Type	Description
I2C_SDA	27	IOD	I2C-bus data; TTL; Z; 5VT
I2C_SCL	26	IOD	I2C-bus clock; TTL; Z; 5VT
I2C_ADR	17	ID	I2C-bus address select (internal pull-down); TTL; 5VT

9397 750 12066

© Koninklijke Philips Electronics N.V. 2004. All rights reserved.

Preliminary data

Rev. 01 – 04 May 2004

6 of 26

Philips Semiconductors					PNX2000
					Audio video input processor
	Table 10:	Clock pins
	Symbol	Pin	Type	Description
	MPIFCLK	31	OD	13.5 MHz or 27 MHz to PNX3000; CMOS
	DCLK	47	OD	reserved; CMOS
	XIN	38	OSCIN	crystal oscillator input
	XOUT	39	OSCOUT	crystal oscillator output
	XGND	40	OSCGND	crystal oscillator ground
	Table 11:	GTU pins
	Symbol	Pin	Type	Description
	INTOUT	48	OD	interrupt line output; Z; 5VT
	Table 12:	Reset pins
	Symbol	Pin	Type	Description
	RESET_N	45	IA	external reset input
	RESET_SEL 46		ID	selects between using an external reset input or using
				internal POR; TTL; 5VT
				HIGH = internal reset
				LOW = external reset
	Table 13: Digital supply pins
	Symbol	Pin		Type	Description
	VDDE	32,49,66, 82,91,		-	3.3 V supply voltage
		141,143
	VSSE	28,41,59, 72,99,		-	3.3 V ground
		144
	VDDI [1]	30,35,42, 53,67,		-	1.8 V supply voltage
		80,97
	VSS	29,36,43, 54,68,81,		-	1.8 V ground
		98,139
	VDDM [1]	44,140		-	1.8 V supply voltage for KSFRAMs and KROMs
	VSSD(I2D)	1		GA	I2D digital ground
	VDDD(I2D)	16		SA	I2D digital 1.8 V supply voltage
	VSS(ADAC)	100		GD	audio DAC 1.8 V digital ground
	VDDD(ADAC)	101		SD	audio DAC 1.8 V digital supply voltage
	VDD3(DTC)	23		SA	DTC 3.3 V supply voltage
	VDDD(DTC)	24		SA	DTC 1.8 V supply voltage

[1]VDDI and VDDM can be connected to same 1.8 V supply voltage.

Table 14: Analog supply pins

	Symbol	Pin	Type	Description
	VSSA(I2D)	6	GA	I2D analog ground
	VDDA(I2D)	11	SA	I2D analog 1.8 V supply voltage
	VDDA(PLL)	33	-	phase locked loop 1.8 V supply voltage
9397 750 12066				© Koninklijke Philips Electronics N.V. 2004. All rights reserved.

Preliminary data

Rev. 01 – 04 May 2004

7 of 26

Philips Semiconductors				PNX2000
				Audio video input processor
	Table 14: Analog supply pins…continued
	Symbol	Pin	Type	Description
	VDDA(ADAC)	102	SA	audio DAC 3.3 V supply voltage
	VSS(DTC)	25	GA	DTC analog ground
	VDDA(XTAL)	37	OSCVDD	1.8 V crystal oscillator supply voltage

7.Functional description

7.1Overview

Table 15 describes the functions of the hardware blocks (see also PNX2000 Block

Diagram Figure 1).

For more detailed functional description refer to the PNX2000 User Manual.

Table 15: Block function

Function	Block	Description
High speed data link	I2D	Receives data in three streams from PNX3000.
Video decoder	VIDDEC	Decodes and processes CVBS, YUV or Y/C in YUV
processor		stream.
Serial interface	I2C-bus	To access all the internal registers.
Global Task Unit	GTU	Generates all the internal clocks, reset and power
		management.
TV sound decoder	DEMDEC	Demodulation, decoding of terrestrial TV audio
	DSP	standards .
Audio processor	AUDIO DSP	Processing analog and digital audio sources.
Data Capture Unit	DCU	Acquires VBI data (Teletext; CC; VPS) and formats in a
		stream.
Formatter unit	ITU-656	Formats YUV, VBI data and CVBS data in ITU-656.
Bus Control Unit	BCU	Bus arbitration among all the internal blocks.

7.2 Interfaces

	Table 16:	Interfaces
	Interface	Description
	I2C-bus	The PNX2000 IC is controlled using an I2C-bus. It performs like an I2C-bus to
		PI-bus bridge, i.e. translates I2C-bus slave received commands to PI-bus master
		commands.
	I2D	Receives data in three streams from PNX3000.
	I2S-bus	Serial digital audio interface (6 stereo inputs, 6 stereo outputs) for connection to
		other devices that support the I2S-bus standard. Can be used to receive decoded
		sound from a multi-channel digital audio decoder, provide additional ADCs and
		DACs, or loop audio signals through an external processor or delay line.
	ITU-656	Mainly intended to transfer output data stream externally to the PNX8550, but the
		output data stream could also be readable by other ITU-656 input devices that
		implement data valid signalling.
	DACS	Digital-analog converters used to generate analog outputs from Sound Core.
9397 750 12066		© Koninklijke Philips Electronics N.V. 2004. All rights reserved.

Preliminary data

Rev. 01 – 04 May 2004

8 of 26