Pin Connections
Table 3. MC34708 Pin Definitions (continued)
Pin
Pin Number
Pin Name
Definition
Function
Ground reference for switching regulators
SW4A input
F11
GNDREF2
SW4AIN
GND
R3
I
SW4A switch node connection
SW4A feedback
R2
SW4ALX
SW4AFB
GNDSW4A
SW4BIN
O
P6
I
Ground for SW4A
P2
R4
GND
SW4B input
I
SW4B switch node connection
SW4B feedback
R5
SW4BLX
SW4BFB
GNDSW4B
SW4CFG
SW5IN
O
P5
I
Ground for SW4B
R6
GND
SW4A/B mode configuration
SW5 input
M6
I
N7, P7, R7
N8, P8, R8
M7
I
SW5 output
SW5LX
O
SW5 feedback
SW5FB
I
GND
GND
I
Ground for SW5
N9, P9, R9
L8
GNDSW5
GNDREF1
SWBSTIN
SWBSTLX
SWBSTFB
GNDSWBST
Ground reference for Switching Regulators
Boost Regulator BP supply
F12, F13
J14, J15
H12
SWBST switch node connection
Boost Regulator feedback
O
I
Ground for boost Regulator
G12, G13
LDO Regulators
L11
GND
VREFDDR input supply
VINREFDDR
VREFDDR
VHALF
I
VREFDDR regulator output
P15
O
O
I
Half supply reference for VREFDDR
VPLL input supply
K10
J11
VINPLL
VPLL regulator output
J12
VPLL
O
O
O
I
Drive output for VDAC regulator using external PNP device
VDAC regulator output
J10
VDACDRV
VDAC
K12
Supply pin for VUSB2, VDAC, and VGEN2
1. VUSB2 input using internal PMOS FET
2. Drive output for VUSB2 regulator using external PNP device
VUSB2 regulator output
L14
LDOVDD
M14
I
VUSB2DRV
O
O
I
L13
N14
M13
N15
VUSB2
VINGEN1
VGEN1
VGEN1 input supply
VGEN1 regulator output
O
I
1. VGEN2 input using internal PMOS FET
2. Drive output for VINT regulator using external PNP device
VGEN2 regulator output
VGEN2DRV
O
O
O
K11
J13
VGEN2
VSRTC
Output regulator for SRTC module on processor
MC34708
Analog Integrated Circuit Device Data
Freescale Semiconductor
10
FREESCALE [ Freescale ]
