
Analog Integrated Circuit Device Data
Freescale Semiconductor
114
PC34708
Functional Block Requirements and Behaviors
Mini/Micro USB Interface Description and Application Information
period of ADC conversion is determined by the Device Wake-up bits in the USB Timing register. All other behaviors of Audio
Type 1 and other accessories will not be affected by the RAW DATA bit. LKR and the button bits will not set when RAW DATA = 0.
The period of ADC conversion is determined by the Device Wake-up bits in the Timing Set 1 register. All other behaviors of Audio
Type 1 and other accessories will not be affected by the RAW DATA bit.
7.10.8 Analog and Digital Switches
The signal switches in the PC34708 are shown in
Figure 28. These switches are controlled by the identification result when the
Manual S/W = 1, and by the Manual SW/Result register, when the Manual S/W = 0 is in Active mode. The Switch_Open bit
overrides the switch configuration. When the Switch_Open bit is 0, all switches are turned off. The switches for the SPK_L and
SPK_R are capable of passing signals of
±1.5 V, referencing to the GND pin voltage. The SPK_L and SPK_R pins are pulled
down to GND via a 100 k
Ω resistor respectively, as shown in
Figure 28. When the switches are configured automatically by the
identification result, the configuration of the switches vs. the device type is shown in
Table 115.
When detachment of an accessory is detected, the PC34708 will return to Standby mode. In Standby mode, regardless of the
Manual S/W = 1 or Manual S/W = 0 state, all signal switches and are off in the Standby mode. The OUT-to-ground FET is turned
on whenever the FET_ON bit is '0'.
Figure 28. Analog and Digital Switches
Table 115. Switch Configuration When Controlled by the Device Type Register
Device Type
Audio
USB
UART
USB CHG
Dedicated CHG
On SW#
4, 5, 7, MPD
3, 6, MVBUS
1, 2
3, 6, MVBUS
MVBUS
Off SW
MOTG, MVBUS, M0
Device Type
5WT1 CHG
5WT2 CHG
JIG_USB_ON
JIG_USB_OFF
JIG_UART_ON
JIG_UART
TTY
On SW#
MVBUS
3, 6, MVBUS
3, 6
4, 5, 7, MPD
SPK_R
SPK_L
MIC
DP
DM
VBUS
RxD
TxD
D+
D-
SW2
SW1
SW3
SW4
SW6
SW7
SW5
VUSB
LDO
MVBUS
GOTG
VBUSVIN
M0
MPD
VINUSB
MOTG
M1