CS181002-CQR Cirrus Logic Inc, CS181002-CQR Datasheet - Page 29

• 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

DS651UM23
Version 2.3
7.4.1.1. Translate Address
Translate Address does not actually update the address pointers but initiates the
processing required to eventually move them. The host can accomplish other tasks,
including HMI Reads and Writes while the address translation is being processed. A
logical description of Translate Address is given below. A contextual use of the Translate
Address operation is shown in the reference implementations. Refer also to
Definitions" on page 33
void TranslateAddress(
{
}
7.4.1.2. Interrupt Acknowledge
Causes HACK to be de-asserted.
void InterruptAck( void )
{
}
7.4.1.3. Goto Packet
Moves HMI pointers to bridgeRxPktBuffer (write = 0) or bridgeTxPktBuffer (write = 1).
void GotoPacket(
{
}
7.4.1.4. Goto Translation
Moves HMI data pointers to the results of the most recently completed translate address
operation. The write parameter dictates the operation of the HREQ signal and only needs
to be supplied for applications using hardware data handshaking via this signal.
void GotoTranslation(
{
}
long address )
int msgack = MSG_D;
MSG_A = ( address & 0xff0000 ) >> 16;
MSG_B = ( address & 0xff00 ) >> 8;
MSG_C = address & 0xff;
MSG_D = CVR_TRANSLATE_ADDRESS;
while( !( ( msgack ^ MSG_D ) & ( 1 << MSG_TOGGLE_BO ) ) );
int msgack = MSG_D;
MSG_D = CVR_INTERRUPT_ACK;
while( !( ( msgack ^ MSG_D ) & ( 1 << MSG_TOGGLE_BO ) ) );
bool write )
int msgack = MSG_D;
MSG_C = write ? MOP_GOTO_PACKET_TRANSMIT : MOP_GOTO_PACKET_RECEIVE;
MSG_D = CVR_MULTIPLEX_OP;
while( !( ( msgack ^ MSG_D ) & ( 1 << MSG_TOGGLE_BO ) ) );
bool write = 0 )
int msgack = MSG_D;
MSG_C = write ? MOP_GOTO_TRANSLATION_WRITE : MOP_GOTO_TRANSLATION_READ;
MSG_D = CVR_MULTIPLEX_OP;
while( !( ( msgack ^ MSG_D ) & ( 1 << MSG_TOGGLE_BO ) ) );
and
©
Copyright 2005 Cirrus Logic, Inc.
"HMI Access Code" on page
34.
CobraNet Hardware User’s Manual
Host Management Interface (HMI)
"HMI
29