Samsung S5PC100 User Manual page 150

PAD CONTROL
5.8 USB HOST 1.1 PIN CONTROL REGISTER
5.8.1 USB Host 1.1 Pad Configure Register (UHOST, R/W, Address = 0xE030_B68)
Field
Reserved
USB_DMPD
USB_DPPD
USB_PUSW2
USB_PUSW1
USB_SUSPND
NOTES:
1. Pull-up resistance is 1.2kohm. Refer to figure 2.2-2
2. Pull-up resistance is 0.5kohm. Refer to figure 2.2-2.
3. Pull-down resistance is 20kohm. Refer to figure 2.2-2.
XusbDP
XusbDM
Figure 2.2-2 USB Transceiver Block Diagram
2.2-98
Bit
[7:5] Reserved
USB DM Pull-down
[4]
0 = disables
USB DP Pull-down
[3]
0 = disables
(2)
USB Pull-up
[2]
0 = off 1 = on
(1)
USB Pull-up
[1]
0 = off 1 = on
Make USB Tranceiver PAD to enter suspend mode.
[0] 0 = Normal mode
1 = Suspend mode
USB 1.0 Tranceiver
0.5K
1.2K
SW1
20K
20K
Description
(3)
control
1 = enables
(3)
control
1 = enables
switch2 control
switch1 control
SW2
S5PC100 USER'S MANUAL (REV1.0)
USB_PUSW2
USB_PUSW1
USB_DPPD
USB host
I/F
USB_DMPD
Reset Value
0
0
0
0
0
0