STW4810_07 Datasheet, PDF (43/78 Pages) STMicroelectronics – Power management for multimedia processors

STw4810
Functional description
The transceiver receives USB data in the following conditions:
uart_en = 0 (USB control register 1); oe_int_en = 1
Table 33. Data receiver via USB control register 1
USB mode (dat_se0)
Suspend
Inputs
DP DN
USBVP
Outputs
USBVM
USBRCV
1 (DAT_SE0 mode)
1 (DAT_SE0 mode)
1 (DAT_SE0 mode)
1 (DAT_SE0 mode)
1 (DAT_SE0 mode)
1 (DAT_SE0 mode)
1 (DAT_SE0 mode)
1 (DAT_SE0 mode)
0 (VP_VM mode)
0 (VP_VM mode)
0 (VP_VM mode)
0 (VP_VM mode)
0 (VP_VM mode)
0 (VP_VM mode)
0 (VP_VM mode)
0 (VP_VM mode)
0
0
0
Diff rcv 1
1
not used
0
1
0
1
0
not used
0
0
1
0
0
not used
0
1
1
Diff rcv 1
0
not used
1
0
0
0
1
not used
1
1
0
1
0
not used
1
0
1
0
0
not used
1
1
1
1
0
not used
0
0
0
0
0
diff rcv 1
0
1
0
1
0
1
0
0
1
0
1
0
0
1
1
1
1
diff rcv 1
1
0
0
0
0
not used
1
1
0
1
0
not used
1
0
1
0
1
not used
1
1
1
1
1
not used
UART mode
UART mode is entered by setting the ‘uart_en’ bit to 1 (USB control register 1 - Table 11).
The transceiver contains two digital logic level translators between the following balls:
● TXD signal: from USBVM to DN
● RXD signal: from DP to USBVP
When not in UART mode the level translators are disabled.
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