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Table 13. gmZAN1 TFT Panel Interface Timing
Signal Name Min Typical Max Unit
Period t1 0 16.67 2048
-
lines
ms
Frequency 60 - Hz
Front porch t2 0 2048 lines
Back porch t3 0 2048 lines
Pulse width t4 0 2048 lines
PdispE t5 0 Panel height 2048 lines
Disp. Start from VS t6 0 2048 lines
PVS set up tp PHS t18 1 2048 PCLK *1
PVS
PVS hold from PHS t19 1 2048 PCLK *1
Period t7 0 2048 [1024 PCLK *1
Front porch t8 0 2048 PCLK *1
Back porch t9 0 2048 PCLK *1
Pulse width t10 0 2048 PCLK *1
PdispE t11 0 Panel width 2048 [1024] PCLK *1
PHS
Disp. Start fom HS t12 0 2048 PCLK *1
Frequency t13 120 [60] MHz
Clock (H) *2 t14 DCLK/2-3 [DCLK-3] DCLK/2-2 [DCLK-2] ns
Clock (L) *2 t15 DCLK/2-3 [DCLK-3] DCLK/2-2 [DCLK-2] ns
PCLKA,
PCLKB*4
Type - One pxl/clock
[two pxl/clock]
-
Set up *3 t16 DCLK/2-5 [DCLK-5] DCLK/2-2 [DCLK-2] ns
Hold *3 t17 DCLK/2-5 [DCLK-5] DCLK/2-2 [DCLK-2] ns
Data
width 3 bits 18 bits [36 bits] 24 bits [48 bits] bits/pixel
NOTE: Numbers in [ ] are for two pixels/clock mode.
NOTE: The drive current of the panel interface signals is programmable as shown in Table 1. The drive current is to be
programmed through the API upon chip initialization. Output current is programmable from 2 mA to 20mA in increments of 2 mA.
Drive strength should be programmed to match the load presented by the cable and input of the panel. Values shown are based on a
loading of 20pF and a drive strength of 8 mA.
NOTE *1: The PCLK is the panel shift clock.
NOTE *2: The DCLK stands for Destination Clock (DCLK) period. Is equal to:
-PCLK period in one pixel/clock mode,
-twice the PCLK period in two pixels/clock mode.
NOTE *3: The setup/hold time spec. for PCLK also applies to PHS and PdispE. The setup time (t16) and the hold time (t17) listed
in this table are for the case in which no clock-to-data skew is added. The PVS/PHS/PdispE/Pdata signals are asserted on
the rising edge of the PCLK. The polarity of the PCLK and its skew are programmable. Clock to Data skew can be
adjusted in sixteen 800-ps increments. In combination with the PCLK polarity inversion, the clock-to-data phase can be
adjusted in total of 31 steps.
NOTE *4: The polarity of the PCLKA and the PCLKB are independently programmable.
The micro controller must have all the timing parameters of the panel used for the monitor. The parameters are to be
stored in a non-volatile memory. As can be seen from this table, the wide range of timing programmability of the
gmZAN1 panel interface makes it possible to support various kinds of panels known today: