Datasheet
PCM4220
SBAS407C – DECEMBER 2006 – REVISED AUGUST 2009 .............................................................................................................................................
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TERMINAL FUNCTIONS (continued)
PIN
NAME NO. I/O DESCRIPTION
Sampling modes:
FS0 = 0 and FS1 = 0: Normal mode
FS0 19
Input FS0 = 1 and FS1 = 0: Double Speed mode
FS1 20
FS0 = 0 and FS1 = 1: Quad Speed mode
FS0 = 1 and FS1 = 1: Reserved Sampling mode
Digital decimation filter response:
DF 21 Input DF = 0: Classic filter response
DF = 1: Low Group Delay response
DGND 22 Ground Digital ground
DGND 23 Ground Digital ground
DGND 24 Ground Digital ground
TDM active sub-frame:
SUB0 = 0 and SUB1 = 0: Sub-frame 0
SUB1 25
Input SUB0 = 1 and SUB1 = 0: Sub-frame 1
SUB0 26
SUB0 = 0 and SUB1 = 1: Sub-frame 2
SUB0 = 1 and SUB1 = 1: Sub-frame 3
NC 27 — No external connection, internally bonded to ESD pad
NC 28 — No external connection, internally bonded to ESD pad
NC 29 — No external connection, internally bonded to ESD pad
DGND 30 Ground Digital ground
VDD 31 Power Digital supply, +3.3V nominal
DATA 32 Output Audio serial port data
BCK 33 I/O Audio serial port bit clock
LRCK 34 I/O Audio serial port left/right word clock
MCKI 35 Input Master clock
RST 36 Input Reset and power-down (active low)
OVFL 37 Output Left channel overflow flag (active high)
OVFR 38 Output Right channel overflow flag (active high)
Audio serial port Slave/Master mode:
S/ M 39 Input S/ M = 0: Master mode
S/ M = 1: Slave mode
DGND 40 Output Digital ground
Output word length:
OWL0 = 0 and OWL1 = 0: 24-bits
OWL1 41
Input OWL0 = 1 and OWL1 = 0: 18-bits
OWL0 42
OWL0 = 0 and OWL1 = 1: 20-bits
OWL0 = 1 and OWL1 = 1: 16-bits
Audio data format:
FMT0 = 0 and FMT1 = 0: Left-justified
FMT1 43
Input FMT0 = 1 and FMT1 = 0: I
2
S
FMT0 44
FMT0 = 0 and FMT1 = 1: TDM
FMT0 = 1 and FMT1 = 1: TDM with one BCK delay
DGND 45 Ground Digital ground
VREFR 46 Output Right channel reference output for decoupling purposes only
REFGNDR 47 Ground Right channel reference ground, connect to analog ground
VCOMR 48 Output Right channel common-mode voltage (0.4875 × VCC1 nominal)
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