CS181002-CQR Cirrus Logic Inc, CS181002-CQR Datasheet - Page 28

• Manufacturer Part Number: CS181002-CQR
• Description: Audio DSPs IC CobraNet Audio Networking Processor
• Manufacturer: Cirrus Logic Inc

Specifications of CS181002-CQR

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

CobraNet Hardware User’s Manual
Host Management Interface (HMI)
7.4
7.4.1 Messages
28
Translate Address
Acknowledge Interrupt
Identify
Goto Packet Transmit
Buffer
Goto Translation
Acknowledge Packet
Receipt
Transmit Packet
Goto Counters
Goto Packet Receive
Buffer
Goto Translation
Protocol and Messages
Message
The message conduit is used to issue commands to the CS1810xx/CS4961xx and
retrieve HMI status. The data conduit is used to transfer data dependent on the HMI state
as determined by commands issued by the host via the message conduit.
Messages are used to efficiently invoke action in the CS1810xx/CS4961xx. To send a
message, the host optionally writes to the A, B, and C registers. Writing to the D register
transmits the message to the CS1810xx/CS4961xx. A listing of all HMI messages is
shown in
page
34.
Table
n/c
n/c
read
write
write
n/c
n/c
read
read
read
DRQ Handshake
4. Refer also to
Mode
©
Copyright 2005 Cirrus Logic, Inc.
Table 4. HMI messages
Address (MS)
n/c
n/c
n/c
n/c
n/c
n/c
n/c
n/c
n/c
"HMI Definitions" on page 33
A
Address
n/c
n/c
n/c
n/c
n/c
n/c
n/c
n/c
n/c
B
Address (LS)
n/c
7
6
5
4
3
2
1
0
and
C
"HMI Access Code" on
0xB3
0xB4
0xB5
0xB5
0xB5
0xB5
0xB5
0xB5
0xB5
0xB5
DS651UM23
D
Version 2.3