and status of the part. Register BR15 holds the value of the
mask number for the particular MC14LC5540. BR6 and
BR11 – BR14 are not defined and as such are presently re-
served.
SERIAL CONTROL PORT REGISTER MAP
The SCP register map consists of 16 byte registers. Regis-
ters BR0 – BR5 and BR7 – BR10 provide external control of
Table 2. Byte Register Map
Byte
BR0
b7
b6
b5
b4
b3
b2
b1
b0
Ext
256 kHz
CLK
Mu–/A–Law
Select
Analog
Loopback
I/O Mode
(1)
I/O Mode
(0)
Charge
Pump
Disable
Analog
Power
Down
Digital
Power
Down
BR1
BR2
Reserved
Sidetone
Gain (2)
Sidetone
Gain (1)
Sidetone
Gain (0)
Transmit
Mute
Transmit
Gain (2)
Transmit
Gain (1)
Transmit
Gain (0)
RO
Reference
Select
AXO
Enable
PO
Disable
Receive
Filter
Disable
RO Mute
Analog
Receive
Gain (2)
Analog
Receive
Gain (1)
Analog
Receive
Gain (0)
BR3
BR4
Digital Rx
Gain
Enable
Digital Rx
Gain (6)
Digital Rx
Gain (5)
Digital Rx
Gain (4)
Digital Rx
Gain (3)
Digital Rx
Gain (2)
Digital Rx
Gain (1)
Digital Rx
Gain (0)
N.B. Time
/ Tone
Param.
(7)
N.B. Time
/ Tone
Param.
(6)
N.B. Time
/ Tone
Param.
(5)
N.B. Time
/ Tone
Param.
(4)
N.B.Time
/ Tone
Param.
(3)
N.B. Time
/ Tone
Param.
(2)
N.B. Time
/ Tone
Param.
(1)
N.B. Time
/ Tone
Param.
(0)
BR5
N.B.
Threshold
(7) /
N.B.
Threshold
(6) /
N.B.
Threshold
(5) /
N.B.
Threshold
(4) /
N.B.
Threshold
(3) /
N.B.
Threshold
(2) /
N.B.
Threshold
(1) /
N.B.
Threshold
(0) /
Address
Param.
(1)
Address
Param.
(0)
Don’t
Care
Don’t
Care
Tone
Param.
(11)
Tone
Param.
(10)
Tone
Param.
(9)
Tone
Param.
(8)
BR6
BR7
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Tone
Param.
Status
N.B.
Detect
Enable
2/6
Delay
G.726/
Motorola
16 kbps
Tone
Enable
Tone 1
Enable
Tone 2
Enable
BR8
Software
Encoder
Reset
Software
Decoder
Reset
Linear
Codec
Mode
Highpass
Disable
Reserved
Reserved
Reserved
Reserved
BR9
Encoder
PCM (7)
Encoder
PCM (6)
Encoder
PCM (5)
Encoder
PCM (4)
Encoder
PCM (3)
Encoder
PCM (2)
Encoder
PCM (1)
Encoder
PCM (0)
BR10
D/A PCM
(7)
D/A PCM
(6)
D/A PCM
(5)
D/A PCM
(4)
D/A PCM
(3)
D/A PCM
(2)
D/A PCM
(1)
D/A PCM
(0)
BR11
BR12
BR13
BR14
BR15
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Mask (3)
Reserved
Reserved
Reserved
Reserved
Mask (2)
Reserved
Reserved
Reserved
Reserved
Mask (1)
Reserved
Reserved
Reserved
Reserved
Mask (0)
NOTE: “Setting” a bit corresponds to writing a 1 to the register and “clearing” a bit corresponds to writing a 0 to the register.
MOTOROLA
MC14LC5540
15
MOTOROLA [ MOTOROLA ]
