gl848 Genesys Logic, gl848 Datasheet - Page 52

• Manufacturer Part Number: gl848
• Description: High Speed Usb 2.0 2-in-1 Scanner Controller With Fast Adf & Bus Power
• Manufacturer: Genesys Logic

©2000-2007 Genesys Logic Inc. - All rights reserved.
Offset 7Eh ……..……..………………..………..…………..….………..…..…. Default value = 8’h00
Offset 7Fh ……..……..………………....………..…………..….………..…..…. Default value = 8’h00
Offset 80h ……..……..………………....………..…………..….………..…..…. Default value = 8’h00
GPOLED25 GPOLED24 GPOLED23 GPOLED22 GPOLED21 GPOLED10 GPOLED9 GPOLED8
7-6 BSMPDLY[1:0 ] BSMP output delay.
5-4 VSMPDLY[1:0] VSMP output delay.
3-0 LEDCNT[1:0] LED blinking period = (LEDCNT)*(100ms on + 100ms off).
BSMPDLY1 BSMPDLY0 VSMPDLY1 VSMPDLY0
VRHOME1 VRHOME0 VRMOVE1 VRMOVE0 VRBACK1 VRBACK0 VRSCAN1 VRSCAN0
2 BSMPNEG
1 VSMPNEG
0 DLYSET
7 GPOLED25
6 GPOLED24
5 GPOLED23
4 GPOLED22
3 GPOLED21
2 GPOLED10
1 GPOLED9
0 GPOLED8
R/W
R/W
R/W
GL848 High Speed USB2.0 2-in-1 Scanner Controller With Fast ADF
R/W
R/W
R/W
0 AFE video sample output is synchronized with rising edge of system clock.
1 AFE video sample output is synchronized with falling edge of system clock.
0 AFE dark sample output is synchronized with rising edge of system clock.
1 AFE dark sample output is synchronized with falling edge of system clock.
0 The function is disabled.
1 To enable VSMP and BSMP to delay output by 8.33ns unit. Please refer to Reg 7F.
0 Set GPIO25 as general purpose I/O.
1 Set GPIO25 as LED output.
0 Set GPIO24 as general purpose I/O.
1 Set GPIO24 as LED output.
0 Set GPIO23 as general purpose I/O.
1 Set GPIO23 as LED output.
0 Set GPIO22 as general purpose I/O.
1 Set GPIO22 as LED output.
0 Set GPIO21 as general purpose I/O.
1 Set GPIO21 as LED output.
0 Set GPIO10 as general purpose I/O.
1 Set GPIO10 as LED output.
0 Set GPIO9 as general purpose I/O.
1 Set GPIO9 as LED output.
0 Set GPIO8 as general purpose I/O.
1 Set GPIO8 as LED output.
00 No delay.
01 Delay 8.33ns
10 Delay 16.67ns
11 Delay 25ns.
00 No delay.
01 Delay 8.33ns
10 Delay 16.67ns
11 Delay 25ns.
LED will not blink if LEDCNT=0.
R/W
R/W
R/W
R/W
R/W
R/W
LEDCNT3 LEDCNT2 LEDCNT1 LEDCNT0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Page 52
R/W
R/W
R/W