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SH61F83
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6.6. USB VDM/P46 Configuration: (Reset source: Hardware reset)
USB_CON PULL_UP VPCON
P46
P4CON6
Description
0
0
X
X
1
P46 output in Hi-Z mode,
Read P46 will get the value on pad P46
0
1
X
X
1
1.5K ohm pull-up resistor active when bit “PULL_UP” = “1”,
P46 in Hi-Z mode,
Read P46 will get the value on pad P46
0
X
X
0
0
Output Low (0.4V, min: 8mA)
0
X
X
1
0
Output High (2.4V, min: -0.8mA)
1
X
0
X
X
USB Mode (VDM Pull-up by 1.5Kohm)
Read P46 will get the value of “DM_I” signal on USB transceiver
1
X
1
X
X
USB Mode. Force Low (For pseudo Plug off)
Note 1: Read Figure 6-3 for the general circuit diagram
Note 2: When entering USB Mode (USB_CON = 1) or P46 Output Mode (P4CON6 = 0), PULL_UP function will be controlled
by H/W automatically regardless of the value in the control bit (PULL_UP).
Note 3: P46 has the Schmitt trigger function.
6.7. USB VDP/P45 Configuration: (Reset source: Hardware reset)
USB_CON VPCON
P45
P4CON5
Description
0
X
X
1
P45 output in Hi-Z mode,
Read P45 will get the value on pad P45
0
X
0
0
Output Low (0.4V, min: 8mA)
0
X
1
0
Output High (2.4V, min: -0.8mA)
1
0
X
X
USB Mode
Read P45 will get the value of “DP_I” signal on USB transceiver
1
1
X
X
USB Mode. Force Low (Plug off)
Note 1: Read Figure 6-3 for the general circuit diagram
Note 2: P45 has the Schmitt trigger function.
Figure 6-3. USB Configuration