ST7263BK6 STMicroelectronics, ST7263BK6 Datasheet - Page 100
ST7263BK6
Manufacturer Part Number
ST7263BK6
Description
LOW SPEED USB 8-BIT MCU FAMILY WITH UP TO 32K FLASH/ROM, DFU CAPABILITY, 8-BIT ADC, WDG, TIMER, SCI and I2C
Manufacturer
STMicroelectronics
Datasheet
1.ST7263BH6.pdf
(186 pages)
Specifications of ST7263BK6
4, 8, 16 Or 32 Kbytes Program Memory
high density Flash (HDFlash), FastROM or ROM with Read-Out and Write protection
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PID register (PIDR)
Reset value: xx00 0000 (x0h)
Table 33.
TP3
7
TP3
[7:6] TP[3:2] Token PID bits 3 & 2.
[5:3] Reserved. Forced by hardware to 0.
0
1
1
TP bit definition
2 RX_SEZ Received single-ended zero
1 RXD Received data
0 Reserved. Forced by hardware to 0.
TP2
USB token PIDs are encoded in four bits. TP[3:2] correspond to the variable token
PID bits 3 & 2.
: PID bits 1 & 0 have a fixed value of 01.
Note: When a CTR interrupt occurs (see register ISTR) the software should read
This bit indicates the status of the RX_SEZ transceiver output.
0: No SE0 (single-ended zero) state
1: USB lines are in SE0 (single-ended zero) state
0: No K-state
1: USB lines are in K-state
This bit indicates the status of the RXD transceiver output (differential receiver
output).
If the environment is noisy, the RX_SEZ and RXD bits can be used to secure the
application. By interpreting the status, software can distinguish a valid End
Suspend event from a spurious wakeup due to noise on the external USB line. A
valid End Suspend is followed by a Resume or Reset sequence. A Resume is
indicated by RXD=1, a Reset is indicated by RX_SEZ=1.
the TP3 and TP2 bits to retrieve the PID name of the token received.
The USB standard defines TP bits (see
0
Doc ID 7516 Rev 8
TP2
0
0
1
0
Read only
0
Table
RX_
SEZ
33).
PID Name
SETUP
OUT
IN
RXD
ST7263Bxx
0
0
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