
Analog Integrated Circuit Device Data
Freescale Semiconductor
168
PC34708
Functional Block Requirements and Behaviors
Control Interface SPI/I2C Block Description and Application Information
Unused
15
R
0
Not available
Unused
16
R
0
Not available
Unused
17
R
0
Not available
Unused
18
R
0
Not available
Unused
19
R
0
Not available
Unused
20
R
0
Not available
Unused
21
R
0
Not available
Unused
22
R
0
Not available
Unused
23
R
0
Not available
Table 164. Register 39, USB Control
Name
Bit #
R/W
Reset
Default
Description
Wait
0
R/W
MUSBRSTB
1
Wait or not to wait for the command from the baseband
before turning on the analog or digital switches for
attached accessory
0: Wait until this bit is changed to 1. Turn on the switches
immediately when this bit is changed to 1.
1: Wait for only the time programmed by the Switching
Wait bits in Timing Set 2 register before turning on the
switches.
Manual S/W
1
R/W
MUSBRSTB
1
Manual or automatic switching of the switches
0: manual: the switches are controlled by the Manual S/
W registers.
1: auto: the switches are controlled by the Device Type
registers
RAWDATA
2
R/W
MUSBRSTB
1
Interrupt behavior selection
0: Enable the ADC conversion periodically and report the
ADC Result changes on ID pin to the host.
1: Enable the key press monitor circuit to detect the ID
pin status changes and report the key press events to
the host.
SWITCH_OPEN
3
R/W
MUSBRSTB
1
Switch connection selection
0: Open all switches
1: Switch selection according to the Manual S/W bit.
RESET
4
RWM
MUSBRSTB
0
Soft reset. When written to 1, the IC is reset. Once the
reset is complete, the RST bit is set and the RESET bit
is cleared automatically.
1: to soft-reset the IC
TTY_SPKL
5
R/W
MUSBRSTB
0
SPK_L to DM switch control
0: Turn off the SPK_L to DM switch
1: Turn on the SPK_L to DM switch for TTY
RST
6
R/C
MUSBRSTB
This bit indicates if a chip reset has occurred. This bit will
be cleared once being read.
0: no.
1: Yes.
Table 163. Register 38, USB Button
Name
Bit #
R/W
Reset
Default
Description