SAA6721E Datasheet, PDF (28/72 Pages) NXP Semiconductors – SXGA RGB to TFT graphics engine

Philips Semiconductors
SXGA RGB to TFT graphics engine
Preliminary specification
SAA6721E
ADDRESS R/W D7
D6
D5
D4
D3
D2
D1
D0
222
W h_hs_end[7 to 0]
223
W
224
W h_de_start[7 to 0]
225
W
226
W h_de_end[7 to 0]
227
W
228
W h_active_start[7 to 0]
229
W
230
W v_vs_end[7 to 0]
231
W
232
W h_max_len[7 to 0]
233
W
h_hs_end[10 to 8]
h_de_start[10 to 8]
h_de_end[10 to 8]
h_active_start[10 to 8]
v_vs_end[10 to 8]
h_max_len[10 to 8]
Note
1. Register does not work with register address auto-increment, but with incrementing the address on which the
operation is performed.
Table 8 Detailed description of programming registers
NAME
State
IIC TEST REGISTER
IIC test register
STATE REGISTER
Interrupt state
Interrupt active
Interrupt not active
RGB mode detection
SYNC DETECT REGISTER
Hsync presence
Hsync present
Hsync not present
Vsync presence
Vsync present
Vsync not present
Hsync polarity
Negative Hsync
Positive Hsync
Vsync polarity
Negative Vsync
Positive Vsync
SUBADDRESS R/W
DATA
2
R/W D7 to D0
3
R D0
logic 0
logic 1
4
R D0
logic 0
logic 1
D1
logic 0
logic 1
D2
logic 0
logic 1
D3
logic 0
logic 1
1999 May 11
28