ST92163 datasheet(147/224 Pages) STMICROELECTRONICS

Part #	ST92163

Description	8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT

PDF	224 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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ST92163 - USB PERIPHERAL (USB)

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

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.

MIRROR REGISTER B (MIRRB)

R247 - Read/Write

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.

MIRA7 MIRA6 MIRA5 MIRA4 MIRA3 MIRA2 MIRA1 MIRA0

MIRB7 MIRB6 MIRB5 MIRB4 MIRB3 MIRB2 MIRB1 MIRB0

ST92163 Datasheet(PDF) 147 Page - STMicroelectronics