TH6503 Datasheet, PDF (14/24 Pages) List of Unclassifed Manufacturers – USB Low-Speed Interface

TH6503 USB Low-Speed Interface
Register
Description
(continued)
BridgeConfigRegister (write only)
Bits only take effect after the data IN transfer
has been completed.
Internal address: b111
Size :
8 bits
Bit
Number
6
Bit
Mnemonic
OS
5
FR
4
SUS
3
SO
2
SMC
1-0
OCR1-0
Reset
Status
0
0
0
0
0
00
Function
OCLK Static
? is set and reset by microcontroller
? if set the OCLK pin drives a static level on the OCLK pin, this level
depends on the SMC bit in the BridgeConfigRegister
OS SMC OCLK Output
00
Clock, programmed by OCR<1-0> bits
01
0
10
0
11
1
? can be used as ending stop state signal for an external microcontroller
with own clock
? works like a low active interrupt
Force Resume
terminates suspend mode
? is set by microcontroller if data is sent from connected device
? the TH6503 signals a Resume to the USB host
? the timing (10-15 ms) of the Resume State must be done by
microcontroller
Suspend
sets the TH6503 in suspend mode
? should be set by the microcontroller if no bus traffic is detected for longer
than 3 ms
? can be set and reset by microcontroller only
Stop Oscillator
stops the microcontroller and the USB bridge (the SMC bit is set
automatically)
? is set by the microcontroller
? is reset by an external wake up signal, USB activity or reset
Stop Microcontroller Clock
stops the microcontroller
? is set by the microcontroller
? is reset by an external wake up signal, USB activity or reset
? only affects the OCLK pin
Out Clock Rate
output frequency on the OCLK pin
0 0 1.5 MHz (default)
0 1 2.0 MHz
1 0 3.0 MHz
1 1 6.0 MHz, without guarantee of symmetry, it depends on the
quality of the oscillation element
14