STULPI01A View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STULPI01A' PDF : 44 Pages View PDF
STULPI01A - STULPI01B
Figure 7. USB 2.0 PHY block diagram
HS
Ser-Des
LS/FS
Ser-Des
45 Ω
HS Disconnect Det.
Squelch Detector
LS/FS SE Receivers
3.3V
1.5kΩ
DP
19.25kΩ
3.3V
1.5kΩ
DN
19.25kΩ
Block description
6.12
Power saving features
To reduce power consumption STULPI01 implements 2 low power modes of operation.
1. Low power mode, which is defined in ULPI specification.
2. Power-down mode to save more power in case USB function is not needed.
More information on these modes can be found in following paragraph:
6.13
6.13.1
6.13.2
6.13.3
Modes of operation
ULPI synchronous mode
STULPI01 transceiver supports SDR mode operation (12 pin interface). The selection of
SDR mode is performed during startup reset procedure.
6 pin FS/LS serial mode
This mode is entered by writing to corresponding bit in the Interface Control register.
3 pin FS/LS serial mode
This mode is entered by writing to corresponding bit in the Interface Control register.
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