psb21381 Infineon Technologies Corporation, psb21381 Datasheet - Page 62

• Manufacturer Part Number: psb21381
• Description: Siemens Codec With S/t Transceiver
• Manufacturer: Infineon Technologies Corporation

Data Sheet
2.2.4.1
The MONITOR channel operates on an asynchronous basis. While data transfers on the
bus take place synchronized to frame sync, the flow of data is controlled by a handshake
procedure using the MONITOR Channel Receive (MR) and MONITOR Channel
Transmit (MX) bits. Data is placed onto the MONITOR channel and the MX bit is
activated. This data will be transmitted once per 8-kHz frame until the transfer is
acknowledged via the MR bit.
The MONITOR channel protocol is described In the following section and illustrated in
Figure 32. The relevant control and status bits for transmission and reception are listed
in table 7 and table 8.
Table 7
Transmission of MONITOR Data
Table 8
Reception of MONITOR Data
Control/
Status Bit
Control
Status
Control/
Status Bit
Control
Status
Handshake Procedure
Register
MOCR
MOSR
MSTA
Register
MOCR
MOSR
Bit
MXC
MIE
MDA
MAB
MAC
Bit
MRC
MRE
MDR
MER
Function
MX Bit Control
Interrupt (MDA, MAB, MER) Enable
Data Acknowledged Interrupt
Data Abort Interrupt
Transmission Active
Function
MR Bit Control
Receive Interrupt (MDR) Enable
Data Received Interrupt
End of Reception Interrupt
52
PSB 21381/2
PSB 21383/4
Interfaces
2001-03-12