OMAP4430 Datasheet, PDF (254/443 Pages) Texas Instruments – Multimedia Device

OMAP4430
Public Version
SWPS041D – DECEMBER 2010 – REVISED JANUARY 2012
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(9) I = (ReCycleTime + CsPulseWidth – ReOffTime) * (TimeParaGranularity + 1) * L3CLK. * if mode Write to Read or Read to Write is
enabled
(10) J = (ReCycleTime – ReOffTime) * (TimeParaGranularity + 1) * L3CLK
(11) K = (ReOffTime – ReOntime) * (TimeParaGranularity + 1) * L3CLK
(12) L = (ReOnTime – CsOnTime) * (TimeParaGranularity + 1) * L3CLK
(13) M = (CsOffTime – ReOffTime) * (TimeParaGranularity + 1) * L3CLK
(14) In RFBI_nCSx, x is equal to 0.
(15) rfbi_data[n:0], n up to 8
(16) These values are calculated by the following formula: RFBI registers values * L3 Clock (ns), with L3 clock = 200 MHz. See Table 6-32
for the RFBI registers values.
Table 6-32. DSS—RFBI Registers Configuration—LCD Panel⁽¹⁾
DESCRIPTION
REGISTER AND BIT FIELD
BIT
VALUES
CS signal assertion time from Start Access Time
RFBI_ONOFF_TIME & CSONTIME
[3:0] 0b0000
CS signal de-assertion time from Start Access Time RFBI_ONOFF_TIME & CSOFFTIME
[9:4] 0b001101: 13 cycles
WE signal assertion time from Start Access Time
RFBI_ONOFF_TIME & WEONTIME
[13:10] 0b0010: 2 cycles
WE signal de-assertion time from Start Access Time RFBI_ONOFF_TIME & WEOFFTIME
[19:14] 0b000110: 6 cycles
RE signal assertion time from Start Access Time
RFBI_ONOFF_TIME & RDONTIME
[23:20] 0b000110: 6 cycles
RE signal de-assertion time from Start Access Time RFBI_ONOFF_TIME & REOFFTIME
[29:24] 0b001101: 13 cycles
Write cycle time
RFBI_CYCLE_TIME & WECYCLETIME
[5:0] 0b001010: 10 cycles
Read cycle time
RFBI_CYCLE_TIME & RECYCLETIME
[11:6] 0b001101: 13 cycles
CS pulse width
RFBI_CYCLE_TIME & CSPULSEWIDTH
[17:12] 0b000000
(1) For more information on the RFBI registers, see the Display Subsystem / Remote Frame Buffer Interface section of the OMAP4430
TRM.
rfbi_a0
rfbi_csx
rfbi_re
rfbi_data[n:0]
rfbi_we
rfbi_te_vsync0
rfbi_hsync0
A ccessTime
ReCycleTime
CsOffTime
CsOnTime
ReOffTime
ReOnTime
DR0
DR1
DATA0
A ccessTime
ReCycleTime
CsPulseWidth
CsOffTime
CsOnTime
ReOffTime
ReOnTime
DATA1
Figure 6-49. DSS—RFBI—Command / Data Write—LCD Panel^(1)(2)(3)
(1) In rfbi_csx, x is equal to 0.
(2) In rfbi_data[n:0], n up to 8
(3) For more information, see the Display Subsystem chapter in the OMAP4430 TRM.
SWPS040-048
254 Timing Requirements and Switching Characteristics
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