Genesis Microchip Inc. reserves the right to change or modify the information contained herein without notice. It is
the customer’s responsibility to obtain the most recent revision of the document. Genesis Microchip Inc. makes no
warranty for the use of its products and bears no responsibility for any errors or omissions that may appear in this
document.
• Part Number change: removed hyphen from chip name throughout document
• Updated frequency in TCLK specification table.
• Corrected storage temperature in Preliminary DC Characteristics
• Updated Table 16 Temperature and Voltage variation of the Schmitt trigger
VDD_1.85
>> V
VDD_1.8
.
Feb. 2003
Feb. 2003
Mar. 2003
Apr. 2003
May 2003
May 2003
July 2003
C0523-DAT-01G 7 July 2003
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gmZAN3 Preliminary Data Sheet
1 Overview
The gmZAN3 is a graphics processing IC for Liquid Crystal Display (LCD) monitors at XGA resolution.
It provides all key IC functions required for the highest quality LCD monitors. On-chip functions include
a high-speed triple-ADC and PLL, a high quality zoom and shrink scaling engine, an on-screen display
(OSD) controller and digital color controls.
The gmZAN3 is provided with two versions;
• gmZAN3T with 48-bit TTL output and
• gmZAN3L with industry standard single four channel LVDS transmitter for direct connect to LCD
panels with LVDS interface.
With this level of integration, the gmZAN3 devices simplify and reduce the cost of LCD monitors while
maintaining a high-degree of flexibility and quality.
1.1 gmZAN3 System Design Examples
Figure 1 below shows a typical analog interface LCD monitor system based on the gmZAN3. The
gmZAN3 reduces system cost, simplifies hardware and firmware design and increased reliability because
only a minimal number of components are required in the system.
Analog
RGB
gmZAN3T/L
Direct
Connect to
LVDS IF
for Panels
TTL IF to
Panels
LCD Module
Back-light
Micro
Figure 1. gmZAN3 System Design Examples
C0523-DAT-01G 8 July 2003
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1.2 gmZAN3 Features
gmZAN3 Preliminary Data Sheet
FEATURE OVERVIEW
• Zoom (from VGA) and shrink (from SXGA) scaling
• Integrated 8-bit triple-channel ADC / PLL
• Csync and SOG support
• On-chip versatile OSD engine
• All system clocks synthesized from a single
external crystal
• On-chip reset circuit
• Programmable gamma correction (CLUT)
• PWM back light intensity control
• 5-Volt tolerant inputs – up to 13 GPIO pins
• Low EMI and power saving features
High-Quality Advanced Scaling
• Fully programmable zoom ratios
• Shrink capability from SXGA resolution
• Real Recovery function provides full color
recovery image for refresh rates higher than those
supported by the LCD panel
Analog RGB Input Port
• Supports up to SXGA input
• On-chip high-performance PLLs (only a single
reference crystal required)
Auto-Configuration / Auto-Detection
• Automatic input format detection
• Robust phase and image positioning
On-Chip OSD Controller
• On-chip RAM for downloadable menus
• 1 and 2-bit per pixel character cells
• Horizontal and vertical stretch of OSD menus
• Blinking and transparency
• Proportional font support
• 90 degree rotation of fonts for Portrait Display
support
Built in Test Pattern Generator
• Simplifies manufacturing and
testing
Highly Integrated Solution to
Provide Low System Cost
• Two layer PCB support
• On-chip reset feature to eliminate
external reset component
• Output slew rate control
• Integrated Schmitt trigger for Vsync
and Hsync
OUTPUT INTERFACE
gmZAN3T
• Support for 8 or 6-bit panels (with
high-quality dithering)
• Swap red and green channels
• Ability to reverse bit order of each
R, G, B output
• Single or double pixel clock
• Support up to XGA 85Hz
Built in Flexible LVDS Transmitter
for gmZAN3L
• Four channel 6/8-bit LVDS
transmitter (with high-quality
dithering)
• Programmable channel swapping
and polarity
• Support up to XGA 85Hz output
PACKAGE
• 128-pin PQFP
C0523-DAT-01G 9 July 2003
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gmZAN3 Preliminary Data Sheet
2 gmZAN3 Pinout
These devices are available in a 128-pin Plastic Quad Flat Pack (PQFP) package. Figure 2 provides the
pin locations for all signals.
I/O Legend: A = Analog, I = Input, O = Output, P = Power, G = Ground, I-PU = Input with pull-up,
I-PD = Input with pull down, IO-PD = Bidirectional with pull down
Table 1.
Analog Input Port (Common to gmZAN3T and gmZAN3L)
Pin Name No. I/O Description
AVDD_RED_3.3 96 AP Analog power (3.3V) for the red channel. Must be bypassed with decoupling capacitor
RED+ 97 AI Positive analog input for Red channel.
RED- 98 AI Negative analog input for Red channel.
AGND_RED 99 AG Analog ground for the red channel.
AVDD_GREEN_3.3 91 AP Analog power (3.3V) for the green channel. Must be bypassed with decoupling capacitor
SOG_MCSS 92 AI Dedicated Sync-on-Green pin
GREEN+ 93 AI Positive analog input for Green channel.
GREEN- 94 AI Negative analog input for Green channel.
AGND_GREEN 95 AG Analog ground for the green channel.
AVDD_BLUE_3.3 87 AP Analog power (3.3V) for the blue channel. Must be bypassed with decoupling capacitor
BLUE+ 88 AI Positive analog input for Blue channel.
BLUE- 89 AI Negative analog input for Blue channel.
AGND_BLUE 90 AG Analog ground for the blue channel.
AVDD_ADC_3.3 100 AP Analog power (3.3V) for ADC analog blocks that are shared by all three channels. Includes
ADC_TEST 101 AO Analog test output for ADC. Do not connect.
AGND_ADC 102 AG Analog ground for ADC analog blocks that are shared by all three channels. Includes band
GND_ADC 103 AG Digital ground for ADC clocking circuit.
VDD_ADC_1.8 104 P Digital power (1.8V) for ADC encoding logic. Must be bypassed with decoupling capacitor
HSYNC 85 I ADC input horizontal sync input. The input hysteresis can be set to 0.5V or 1.5V
VSYNC 86 I ADC input vertical sync input. The input hysteresis can be set to 0.5V or 1.5V
(0.1µF) to AGND_RED pin on system board (as close as possible to the pin).
Must be directly connected to the system ground plane.
(0.1µF) to AGND_GREEN pin on system board (as close as possible to the pin).
Must be directly connected to the system ground plane.
(0.1µF) to AGND_BLUE pin on system board (as close as possible to the pin).
Must be directly connected to the system ground plane.
band gap reference, master biasing and full-scale adjust. Must be bypassed with
decoupling capacitor (0.1µF) to AGND_ADC pin on system board (as close as possible to
the pin).
gap reference, master biasing and full-scale adjust.
Must be directly connected to system ground plane.
Must be directly connected to the system ground plane.
(0.1µF) to GND_ADC pin on system board (as close as possible to the pin).
[Input, Schmitt trigger, 5V-tolerant]
[Input, Schmitt triggered, 5V-tolerant]
Table 2. Clock Pins (Common to gmZAN3T and gmZAN3L)
Pin Name No I/O Description
TCLK 111 AI Reference clock (TCLK) from the 14.3MHz crystal oscillator (see Figure 5), or from single-
XTAL 110 AO Crystal oscillator output.
VBUFS_RPLL 107 AO Reserved. For test purposes only. Do not connect
AVSS_RPLL 108 G Analog ground for the reference DDS PLL. Must be directly connected to the system ground
VSS_RPLL 105 G Digital ground for the RCLK and clock generator. Must be directly connected to the system
VDD_RPLL_1.8 106 P Digital power for the RCLK and clock generators. Connect to 1.8V supply. Must be bypassed
AVDD_RPLL_3.3 109 P Analog power for the reference DDS PLL. Connect to 3.3V supply. Must be bypassed with a
C0523-DAT-01G 12 July 2003
ended CMOS/TTL clock oscillator (see Figure 8). This is a 5V-tolerant input. See Table 14.
plane.
ground plane.
with a 0.1µFcapacitor to pin AVSS_RPLL
0.1µFcapacitor to pin VSS_RPLL
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gmZAN3 Preliminary Data Sheet
Table 3. System Interface and GPIO Signals (gmZAN3T)
Pin Name No I/O Description
RESETn 1 IO Active-low hardware reset signal. The reset signal is held low for at least 150ms on the
RESET_OUT 2 O Active-high hardware reset signal. The reset signal is held high for at least 150ms on the
GPIO0/PWM0 80 IO General-purpose input/output signal or PWM0. Open drain option via register setting.
GPIO1/PWM1 79 IO General-purpose input/output signal or PWM1. Open drain option via register setting.
GPIO2 78 IO General-purpose input/output signal. Open drain option via register setting.
GPIO3/IRQn 116 IO General-purpose input/output signal. This is also active-low interrupt input external micro-
GPIO4/MEM_REG 117 IO-PD General-purpose input/output signal. Open drain option via register setting. For 8-bit A/D
GPIO5/AD7 121 IO General-purpose input/output signal or Adddress/data[7] for 8-bit A/D host interface. Open
GPIO6/AD6 122 IO General-purpose input/output signal or Adddress/data[6] for 8-bit A/D host interface.
GPIO7/AD5 123 IO General-purpose input/output signal or Adddress/data[5] for 8-bit A/D host interface.
GPO8/PD40/OB0 60 O General-purpose output signal. GPO or TTL 48-bit panel data/Odd Blue0.
GPO9/PD41/OB1 63 O General-purpose output signal. GPO or TTL 48-bit panel data/Odd Blue1.
GPO10/PD32/OG0 52 O General-purpose output signal. GPO or TTL 48-bit panel data/Odd Green0.
GPO11/PD33/OG1 53 O General-purpose output signal. GPO or TTL 48-bit panel data/Odd Green1.
GPO12/PD24/OR0 40 O General-purpose output signal. GPO or TTL 48-bit panel data/Odd Red0.
GPO13/PD25/OR1 43 O General-purpose output signal. GPO or TTL 48-bit panel data/Odd Red1.
HDATA0/ADO/HP0
HDATA1/AD1/HP1
HDATA2/AD2/OSC_SEL
HDATA3/AD3 125 IO-PD If using 6-wire protocol the HDATA[3] determines the upper A/D3 bits of the host data. For
HFS/AD4 124 IO
HCLK/ALE 118 I
WRn 119 I-PU
RDn 120 I-PU
128
IO-PD Host data for 6-wire serial protocol.
127
126 IO-PD If using 6-wire protocol the HDATA[2] determines bit 2 of the host data. For 8-bit A/D host
chip power up. It has an internal 60KΩl pull-up resistor which can be used for re-setting
other system devices. See section 4.2
[Bi-directional (open drain), 5V-tolerant]
chip power up. It can be used for re-setting other system devices[Output, open-drain 5Vtolerant]
Table 4. System Interface and GPIO Signals (gmZAN3L)
Pin Name No I/O Description
RESETn 1 IO Active-low hardware reset signal. The reset signal is held low for at least 150ms on the
RESET_OUT 2 O Active-high hardware reset signal. The reset signal is held high for at least 150ms on the
GPIO0/PWM0 80 IO General-purpose input/output signal or PWM0. Open drain option via register setting.
GPIO1/PWM1 79 IO General-purpose input/output signal or PWM1. Open drain option via register setting.
GPIO2 78 IO General-purpose input/output signal. Open drain option via register setting.
GPIO3/IRQn 116 IO General-purpose input/output signal. This is also active-low interrupt input external micro-
GPIO4/MEM_REG 117 IO-PD General-purpose input/output signal. Open drain option via register setting. For 8-bit A/D
GPIO5/AD7 121 IO General-purpose input/output signal or Adddress/data[7] for 8-bit A/D host interface. Open
GPIO6/AD6 122 IO General-purpose input/output signal or Adddress/data[6] for 8-bit A/D host interface.
GPIO7/AD5 123 IO General-purpose input/output signal or Adddress/data[5] for 8-bit A/D host interface.
GPO8 60 O General-purpose output signal.
GPO9 63 O General-purpose output signal.
GPO10 52 O General-purpose output.
GPO11 53 O General-purpose output signal.
GPO12 40 O General-purpose output signal.
GPO13 43 O General-purpose output signal.
HDATA0/ADO/HP0
HDATA1/AD1/HP1
HDATA2/AD2/OSC_SEL
HDATA3/AD3 125 IO-PD If using 6-wire protocol the HDATA[3] determines the upper AD3 bits of the host data. For
HFS/AD4 124 IO
HCLK/ALE 118 I
WRn 119 I-PU
RDn 120 I-PU
128
IO-PD
127
126 IO-PD If using 6-wire protocol the HDATA[2] determines bit 2 of the host data. For 8-bit A/D host
chip power up. It has an internal 60KΩl pull-up resistor which can be used for re-setting
other system devices. See section 4.2
[Bi-directional (open drain), 5V-tolerant]
chip power up. It can be used for re-setting other system devices[Output, 5V-tolerant]
DCLK 73 O Not required. Panel output clock. Can be used for test purposes
[Tri-state output, Programmable Drive]
DVS 72 O Not required. Panel Vertical Sync. Can be used for test purposes
[Tri-state output, Programmable Drive]
DHS 71 O Not required. Panel Horizontal Sync. Can be used for test purposes
[Tri-state output, Programmable Drive]
DEN 70 O Not required. Panel Display Enable, which frames the output background. Can be used for
test purposes
[Tri-state output, Programmable Drive]
PBIAS 77 O Panel Bias Control (back light enable)
PPWR 74 O Panel Power Control
CH3P_LV 6 O LVDS Channel 3 positive1
CH3N_LV 7 O LVDS Channel 3 negative1
CLKP_LV 8 O LVDS Clock positive1
CLKN_LV 9 O LVDS Clock negative1
CH2P_LV 10 O LVDS Channel 2 positive1
CH2N_LV 11 O LVDS Channel 2 negative1
CH1P_LV 12 O LVDS Channel 1 positive1
CH1N_LV 13 O LVDS Channel 1 negative1
CH0P_LV 14 O LVDS Channel 0 positive1
CH0N_LV 15 O LVDS Channel 0 negative1
Note: 1These pin names are based on having swapping enabled on the initial positive and negative LVDS signals.
C0523-DAT-01G 15 July 2003
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gmZAN3 Preliminary Data Sheet
Table 6. Display Output Port for (gmZAN3T)
Pin Name No I/O Description
DCLK 73 O Panel output clock.
[Tri-state output, Programmable Drive]
DVS 72 O Panel Vertical Sync.
[Tri-state output, Programmable Drive]
DHS 71 O Panel Horizontal Sync.
[Tri-state output, Programmable Drive]
DEN 70 O Panel Display Enable, which frames the output background.
[Tri-state output, Programmable Drive]
PBIAS 77 O Panel Bias Control (back light enable)
PPWR 74 O Panel Power Control
PD47/OB7 69 O Panel output data or Odd Blue 7 data bit. [Tri-state output, Programmable Drive]
PD46/OB6 68 O Panel output data or Odd Blue 6 data bit. [Tri-state output, Programmable Drive]
PD45/OB5 67 O Panel output data or Odd Blue 5 data bit. [Tri-state output, Programmable Drive]
PD44/OB4 66 O Panel output data or Odd Blue 4 data bit. [Tri-state output, Programmable Drive]
PD43/OB3 65 O Panel output data or Odd Blue 3 data bit. [Tri-state output, Programmable Drive]
PD42/OB2 64 O Panel output data or Odd Blue 2 data bit. [Tri-state output, Programmable Drive]
PD41/OB1/GPO9 63 O Panel output data or Odd Blue 1 data bit. [Tri-state output, Programmable Drive] When used
with 6-bit panels can be used as GPO.
PD40/OB0/GPO8 60 O Panel output data or Odd Blue 0 data bit. [Tri-state output, Programmable Drive] When used
with 6-bit panels can be used as GPO.
PD39/OG7 59 O Panel output data or Odd Green 7 data bit. [Tri-state output, Programmable Drive]
PD38/OG6 58 O Panel output data or Odd Green 6 data bit. [Tri-state output, Programmable Drive]
PD37/OG5 57 O Panel output data or Odd Green 5 data bit. [Tri-state output, Programmable Drive]
PD36/OG4 56 O Panel output data or Odd Green 4 data bit. [Tri-state output, Programmable Drive]
PD35/OG3 55 O Panel output data or Odd Green 3 data bit. [Tri-state output, Programmable Drive]
PD34/OG2 54 O Panel output data or Odd Green 2 data bit. [Tri-state output, Programmable Drive]
PD33/OG1/GPO11 53 O Panel output data or Odd Green 1 data bit. [Tri-state output, Programmable Drive] When
used with 6-bit panels can be used as GPO.
PD32/OG0/GPO10 52 O Panel output data or Odd Green 0 data bit. [Tri-state output, Programmable Drive] When
used with 6-bit panels can be used as GPO.
PD31/OR7 51 O Panel output data or Odd Red 7 data bit. [Tri-state output, Programmable Drive]
PD30/OR6 48 O Panel output data or Odd Red 6 data bit. [Tri-state output, Programmable Drive]
PD29/OR5 47 O Panel output data or Odd Red 5 data bit. [Tri-state output, Programmable Drive]
PD28/OR4 46 O Panel output data or Odd Red 4 data bit. [Tri-state output, Programmable Drive]
PD27/OR3 45 O Panel output data or Odd Red 3 data bit. [Tri-state output, Programmable Drive]
PD26/OR2 44 O Panel output data or Odd Red 2 data bit. [Tri-state output, Programmable Drive]
PD25/OR1/GPO13 43 O Panel output data or Odd Red 1 data bit. [Tri-state output, Programmable Drive] When used
with 6-bit panels can be used as GPO.
PD24/OR0/GPO12 40 O Panel output data or Odd Red 0 data bit. [Tri-state output, Programmable Drive] When used
with 6-bit panels can be used as GPO.
PD23/EB7 39 O Panel output data or Even Blue 7 data bit. [Tri-state output, Programmable Drive]
PD22/EB6 38 O Panel output data or Even Blue 6 data bit. [Tri-state output, Programmable Drive]
PD21/EB5 37 O Panel output data or Even Blue 5 data bit. [Tri-state output, Programmable Drive]
PD20/EB4 34 O Panel output data or Even Blue 4 data bit. [Tri-state output, Programmable Drive]
PD19/EB3 33 O Panel output data or Even Blue 3 data bit. [Tri-state output, Programmable Drive]
PD18/EB2 32 O Panel output data or Even Blue 2 data bit. [Tri-state output, Programmable Drive]
PD17/EB1 31 O Panel output data or Even Blue 1 data bit. [Tri-state output, Programmable Drive]
PD16/EB0 30 O Panel output data or Even Blue 0 data bit. [Tri-state output, Programmable Drive]
PD15/EG7 29 O Panel output data or Even Green 7 data bit. [Tri-state output, Programmable Drive]
PD14/EG6 28 O Panel output data or Even Green 6 data bit. [Tri-state output, Programmable Drive]
PD13/EG5 27 O Panel output data or Even Green 5 data bit. [Tri-state output, Programmable Drive]
PD12/EG4 26 O Panel output data or Even Green 4 data bit. [Tri-state output, Programmable Drive]
PD11/EG3 25 O Panel output data or Even Green 3 data bit. [Tri-state output, Programmable Drive]
PD10/EG2 24 O Panel output data or Even Green 2 data bit. [Tri-state output, Programmable Drive]
PD9/EG1 15 O Panel output data or Even Green 1 data bit. [Tri-state output, Programmable Drive]
PD8/EG0 14 O Panel output data or Even Green 0 data bit. [Tri-state output, Programmable Drive]
PD7/ER7 13 O Panel output data or Even Red 7 data bit. [Tri-state output, Programmable Drive]
PD6/ER6 12 O Panel output data or Even Red 6 data bit. [Tri-state output, Programmable Drive]
PD5/ER5 11 O Panel output data or Even Red 5 data bit. [Tri-state output, Programmable Drive]
PD4/ER4 10 O Panel output data or Even Red 4 data bit. [Tri-state output, Programmable Drive]
PD3/ER3 9 O Panel output data or Even Red 3 data bit. [Tri-state output, Programmable Drive]
PD2/ER2 8 O Panel output data or Even Red 2 data bit. [Tri-state output, Programmable Drive]
C0523-DAT-01G 16 July 2003
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