HT82A850R Datasheet, PDF (20/41 Pages) Holtek Semiconductor Inc – Audio MCU

HT82A850R
The bit PFD_IO is used to determine whether PC0 is a general purpose I/O pin or a PFD output.
PFD_IO=²1²
PFD_IO=²0²
PC0 is PFD output
PC0 is a general IO pin port - default=0
The SELW bit is used to control the power amplifier input source. The software should set SELW =²1² when the power
amplifier signal is sourced from MUSIC_IN, otherwise the speaker output is the USB Audio data.
SELW=²1²
SELW=²0²
The power amplifier signal is sourced from the MUSIC_IN pin
The power amplifier signal is sourced from the USB Audio data (Default=0)
fS Y S /4
PFD
4 - S ta g e P r e s c a le r ^{F r e q u e n c y}
(1 /1 6 )
P r e s c a le r
P r e s c a le r
O u tp u t
PFD D
PFD
O u tp u t
P R E S 1,P R E S 0
PFD EN
P r e s c a le r O u tp u t
N o te : P F D O u tp u t F re q u e n c y =
2 ´ (N + 1 )
, w h e r e N = th e v a lu e o f th e P F D d a ta
SPI
The serial interface function is similar to the Motorola SPI, where four basic signals are included. These are the SDI
(Serial Data Input), SDO (Serial Data Output), SCK (serial clock) and SCS (slave select pin).
SCS
SCK
SDI
D 7 /D 0 D 6 /D 1 D 5 /D 2 D 4 /D 3 D 3 /D 4 D 2 /D 5 D 1 /D 6 D 0 /D 7
SDO
D 7 /D 0 D 6 /D 1 D 5 /D 2 D 4 /D 3 D 3 /D 4 D 2 /D 5 D 1 /D 6 D 0 /D 7
SPI Timing
Label
Functions
D7
D6
SBCR _{Serial Bus}
CKS
M1
Default ^{Control Register}
0
1
SBDR _{Serial Bus}
D7
D6
Default ^{Data Register}
U
U
Note: ²U² unchanged
D5
D4
D3
D2
D1
M0
SBEN MLS CSEN WCOL
1
0
0
0
0
D5
D4
D3
D2
D1
U
U
U
U
U
D0
TRF
0
D0
U
Rev. 1.10
20
July 25, 2007