Page 214
Epson Research and Development
Vancouver Design Center
18.1.2 CRT Frame Rate Calculation
The maximum CRT frame rate is calculated using the following formula.
CRT PCLKmax
max. CRT Frame Rate = ---------------------------------------------------------------------------------------------------------
(CHDP + CHNDP) × (CVDP + CVNDP)
Where:
CRT PCLKmax= maximum CRT pixel clock frequency
CVDP
CVNDP
CHDP
CHNDP
Ts
= CRT Vertical Display Height
= (REG[057h] bits [1:0], REG[056h] bits [7:0]) + 1
= CRT Vertical Non-Display Period
= REG[058h] bits [6:0] + 1
= CRT Horizontal Display Width
= (REG[050h] bits [6:0] + 1) x 8Ts
= CRT Horizontal Non-Display Period
= (REG[052h] bits [5:0] + 1) x 8Ts
= minimum CRT pixel clock (CPCLK) period
S1D13506
X25B-A-001-10
Hardware Functional Specification
Issue Date: 01/02/06
EPSON [ EPSON COMPANY ]
