AD1816 Analog Devices, AD1816 Datasheet - Page 45

• Manufacturer Part Number: AD1816
• Description: Single Chip Plug And Play Multimedia Audio Subsystem
• Manufacturer: Analog Devices

MAPPING THE AD1816 EEPROM INTO THE AD1816A EEPROM
The equations below map AD1816 flags onto AD1816A flags:
MODEM_EN = MODEM_EN
XTRA_EN = XTRA_EN
SUPER_EN = 0
I
XTRA_HV = VOL_EN * VOL_SEL
IRQSEL12_13 = X (don’t care)
IRQSEL3_9 = 0
RSTB_EN = 0
XTRASZ0[3] = XTRA_SIZE
XTRASZ0[2:0] = 000
IRQSEL4_10 = MODEM_EN
IRQSEL11_15 = 1
IRQSEL9_14 = 0
IRQSEL4_9_11 = 1
XIRQINV = 0
MIRQINV = 0
IRQ_EN = 0
XTRA_CS = 0
XTRASZ1[3:0] = XXXX (don’t care)
PIN MUXING IN THE AD1816 AND AD1816A
Some AD1816 and AD1816A options are mutually exclusive because there are a limited number of pins on the device to support
them all. The tables below map functions to pin, and show how the flags must be set to assign functions to pins. For each pin, the
first function listed is the default; that function is used if the EEPROM is absent or invalid.
PQFP
1
2
3
77
81
82
83
97
98
99
100
(1) IRQ pins are three-stated if not assigned to a logical device.
(2) A pull-up or pull-down resistor may be required if EEPROM is used, because this pin is three-stated while EEPROM is read.
REV. A
2
S0_HV = VOL_EN * VOL_SEL
TQFP
99
100
1
75
79
80
81
95
96
97
98
Pin Function
I
VOL_UP
I
VOL_DN
I
GND
IRQ(10)
IRQ(4)
I
IRQ(3)
I
MDM_IRQ
I
MDM_SEL
SPORT_SCLK
LD_SEL
No Connect
SPORT_SDFS
LD_DRQ
VOL_UP
SPORT_SDO
LD_DACK
No Connect
SPORT_SDI
LD_IRQ
VOL_DN
GND
2
2
2
2
2
2
S0_DATA
S0_LRCLK
S0_BCLK
S1_DATA
S1_BCLK
S1_LRCLK
Table XIII. AD1816 Pin Muxing
–45–
I/O
I
I
I
I
I
I
O (1)
O (1)
I
O (1)
I
I
I
O (2)
O
O
O
O (2)
I
I
O
O
O
I
I
I
I
VOL_EN * (XTRA_EN + VOL_SEL)
XTRA_EN * XTRA_IRQ
XTRA_EN * XTRA_IRQ
Flags Required
VOL_EN + (XTRA_EN * VOL_SEL)
VOL_EN * (XTRA_EN + VOL_SEL)
VOL_EN + (XTRA_EN *VOL_SEL)
VOL_EN * (XTRA_EN + VOL_SEL)
VOL_EN + (XTRA_EN * VOL_SEL)
MODEM_EN
MODEM_EN
MODEM_EN
MODEM_EN
MODEM_EN
MODEM_EN
MODEM_EN
MODEM_EN
XTRA_EN * (VOL_EN * VOL_SEL)
XTRA_EN
XTRA_EN * VOL_EN * VOL_SEL
XTRA_EN * (VOL_EN * VOL_SEL)
XTRA_EN
XTRA_EN * (VOL_EN * VOL_SEL)
XTRA_EN * (VOL_EN * VOL_SEL)
XTRA_EN
XTRA_EN * VOL_EN * VOL_SEL
XTRA_EN * (VOL_EN * VOL_SEL)
XTRA_EN * (VOL_EN * VOL_SEL)
AD1816A