WM8310GEB/V Wolfson Microelectronics, WM8310GEB/V Datasheet - Page 51

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WM8310GEB/V

Manufacturer Part Number
WM8310GEB/V
Description
POWER MANAGEMENT SUBSYSTEM, 169BGA
Manufacturer
Wolfson Microelectronics
Datasheet

Specifications of WM8310GEB/V

Supply Voltage
7V
No. Of Step-down Dc - Dc Converters
4
No. Of Ldo Regulators
11
Digital Ic Case Style
BGA
No. Of Pins
169
No. Of Regulated Outputs
13
Operating Temperature Range
-40°C To
Rohs Compliant
Yes
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Pre-Production
w
R16534 (4096h)
FLL Control 5
Table 20 FLL Control
13.3.1
To simplify the configuration of the FLL, an ‘automatic’ mode is provided in order to synthesize a
number of commonly used reference frequencies using the 32.768kHz crystal oscillator as a
reference.
FLL Automatic mode is selected by setting the FLL_AUTO register bit as described in Table 21.
When FLL_AUTO is set, the FLL is automatically configured to select the 32.768kHz oscillator as the
FLL reference, and will generate the output frequency selected by FLL_AUTO_FREQ.
FLL Automatic mode should be selected while the FLL is disabled (FLL_ENA = 0). After Automatic
mode has been selected, the FLL can be enabled and disabled using FLL_ENA, as described in
Table 20.
R16529 (4091h)
Clock Control 2
Table 21 FLL Automatic Mode
ADDRESS
ADDRESS
FLL AUTO MODE
BIT
BIT
4:3
1:0
2:0
7
FLL_CLK_RE
F_DIV [1:0]
FLL_CLK_SR
C [1:0]
FLL_AUTO
FLL_AUTO_F
REQ [2:0]
LABEL
LABEL
DEFAULT
DEFAULT
000
00
00
1
0011 = x 8
0100 = x 16
0101 = x 32
0110 = x 64
0111 = x 128
1XXX = x 256
Recommended that this register is
not changed from default.
FLL Clock Reference Divider
00 = 1
01 = 2
10 = 4
11 = 8
CLKIN must be divided down to
<=13.5MHz.
For lower power operation, the
reference clock can be divided
down further if desired.
FLL Clock source
00 = 32.768kHz xtal oscillator
01 = CLKIN
10 = Reserved
11 = Reserved
FLL Automatic Mode Enable
0 = Manual configuration mode
1 = Automatic configuration mode
(To enable the FLL output,
FLL_ENA must also be set in
Automatic mode)
FLL Automatic Mode Frequency
select
000 = 2.048MHz
001 = 11.2896MHz
010 = 12MHz
011 = 12.288MHz
100 = 19.2MHz
101 = 22.5792MHz
110 = 24MHz
111 = 24.576MHz
PP, December 2009, Rev 3.0
DESCRIPTION
DESCRIPTION
WM8310
51

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