Cirrus Logic CS42L42 Manual page 120

7.1.10 SCP Device ID 4
7
Default
1
Bits Name
7:0 PART_ID[7:0] Part ID lower byte. Unique ID for each device. The value can be read only while the SoundWire Slave is in the
(DeviceID[15:8]) Enumeration ON state. A zero value is returned if enumeration is OFF. If enumeration goes OFF due to a SoundWire
bus clash in the middle of a read, a partial value may be returned.
Part ID = 4242
7.1.11 SCP Device ID 5
7
Default 0
Bits Name
7:0 CLASS[7:0] Class. Reserved to indicate the device class. A value is returned only if enumeration is ON. A zero is returned if enumeration
is OFF. If enumeration goes OFF due to a SoundWire bus clash in the middle of a read, a partial value may be returned.
7.1.12 SCP Frame Control
7
Default 0
Note: A write to this register in the inactive bank triggers bank switch at the end of the current frame. A write to the Bank 0 register can trigger
a bank switch to Bank 0. A write to the Bank 1 register can trigger a bank switch to Bank 1.
Bits Name
7:3 ROW_ Rows per frame. Selects the number of rows in the frame. This field automatically updates with frame size detected at
CONTROL completion of the frame synchronization search. Writes to this register change the frame shape at the end of the next frame.
Writes to the inactive banked version of this register trigger a bank switch at the end of the next frame, regardless of whether
the register contents have changed.
ROW_CONTROL Number of Rows
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
2:0 COLUMN_ Columns per frame. Automatically updates with frame size detected at completion of the frame synchronization search.
CONTROL Writes to this register change the frame shape at the end of the next frame. Writes to the inactive banked version of this
register trigger a bank switch at the end of the next frame regardless of whether the register contents have changed.
000 (Default) 2 Columns
General Interrupt Status 1
7.1.13
7
GEN_INT_STAT2_CASCADE
R/O
Default
0
Bits Name
7 GEN_INT_ General interrupt status cascade. Reports any unmasked interrupt conditions in the general interrupt status 2 register.
STAT2_
0 (Default) No unmasked interrupted condition detected.
CASCADE
1 Unmasked interrupt condition asserted
DS1083F2
6 5
PART_ID [7:0] (DeviceID[15:8])
0 0
6 5
CLASS[7:0] (DeviceID[7:0])
0 0
6 5
ROW_CONTROL
0 0
48
50
60
64
75
80
125
147
6 5
0 0
7.1 SoundWire Control Port 0 Registers
4 3
R/O
0 0
Description
4 3
R/O
0 0
Description
4 3
W/O
0 0
Description
ROW_CONTROL Number of Rows
0x08 96
0x09 100
0x0A 120
0x0B 128
0x0C 150
0x0D 160
0x0E 250
0x0F Reserved
001 4 Columns ...
4 3
—
—
0 0
Description
CS42L42
Address Base + 0x54
2 1
0 1
Address Base + 0x55
2 1
0 0
Address Base + 0x60
Address Base + 0x70 (Banked)
2 1
COLUMN_CONTROL
0 0
ROW_CONTROL Number of Rows
0x10 192
0x11 200
0x12 240
0x13 256
0x14 72
0x15 144
0x16 90
0x17 180
111 16 Columns
Address Base + 0xC0
2 1
SCP_IMP_DEF1
0 0
0
1
0
0
0
0
0
R/W1C
0
120