ST92T163 ST Microelectronics, ST92T163 Datasheet - Page 147

• Manufacturer Part Number: ST92T163
• Description: 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS
• Manufacturer: ST Microelectronics

USB INTERFACE (Cont’d)
Bit 0 = SOFP_ENABLE: Start-Of-Frame Pulse
Enable.
Set by software to enable the use of the USBSOF
alternate output function.
1: USBSOF alternate function enabled
0: USBSOF output disabled
USBSOF outputs a 333.33 ns long pulse at each
frame start (actually 10 bits before the SOF packet
expected start). This pulse is not generated until
two SOF packets are received after any USB reset
or USB resume (frame timer locking) and they stop
as soon as the suspend condition is entered
(TIM_SUSP bit in USBCTLR register).
MIRROR REGISTER A (MIRRA)
R246 - Read/Write
Register page: 60
Reset value: xxxx xxxx (xxh)
Bit 7:0 = MIRA[7:0] Mirror register A, bits 7-0.
This register acts as a bit mirroring location where
software can write a byte and read it back with the
LSB and MSB position swapped.
MIRA7 MIRA6 MIRA5 MIRA4 MIRA3 MIRA2 MIRA1 MIRA0
7
0
MIRROR REGISTER B (MIRRB)
R247 - Read/Write
Register page: 60
Reset value: xxxx xxxx (xxh)
Bit 7:0 = MIRB[7:0] Mirror register B, bits 7-0.
This register acts as a bit mirroring location where
software can write a byte and read it back with the
LSB and MSB position swapped.
MIRB7 MIRB6 MIRB5 MIRB4 MIRB3 MIRB2 MIRB1 MIRB0
7
ST92163 - USB PERIPHERAL (USB)
147/224
0