Register 15, Status Register
D3
D2
D1
D0
0
OSCR
ERR
DMOD
00
0
Register
Reset (R)
BIT
NAME
VALUE
FUNCTION
OSCR
Oscillator running
flag
0
1
Oscillator not running, using external clock input,
oscillator circuit is powered down.
Oscillator running, EXTCLK is an output, if enabled.
ERR
Framing error flag
0
1
R
No error
A framing error has occurred since the last read of
this bit. Resets after read
DMOD
Detected
Modulation Type
0
1
R IrDA pulse style data format detected
Amplitude modulated carrier style data format
detected
To read this register, write 0000 to address 15. Independent of the setting of the ECHO bit, the CS8130
will transmit the above contents, with an address field of 1111.
Register 12, Output Pin Control Register
D3
D2
D1
D0
RXDT
RXDH
FORT
FORH
0101
Register
Reset (R)
BIT
NAME
VALUE
FUNCTION
RXDT
RXD output pin
three-state enable
0
1
R In power down, RXD will go high or low.
In power down, RXD will float.
RXDH
RXD output pin
high/low enable
0
1R
In power down, RXD will go low, if RXDT = 0
In power down, RXD will go high, if RXDT = 0
FORT
FORM/BSY output
pin three-state
enable
0
1
R In power down, FORM/BSY will go high or low.
In power down, FORM/BSY will float.
FORH
FORM/BSY output
pin high/low enable
0
1R
In power down, FORM/BSY will go low, if FORT = 0
In power down, FORM/BSY will go high, if FORT = 0
Register 13, Control Register #3
D3
D2
D1
D0
0
0
0
SHDW
0000
Register
Reset (R)
BIT
NAME
VALUE
FUNCTION
SHDW
Shadow register set
enable
0
1
R Enable access to registers 0 though 15
Enable access to shadow registers (16 through 31)
CS8130
18
DS134PP2
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