PSF21150 INFINEON [Infineon Technologies AG], PSF21150 Datasheet - Page 117

• Manufacturer Part Number: PSF21150
• Description: IPAC-X ISDN PC ADAPTER CIRCUIT
• Manufacturer: INFINEON [Infineon Technologies AG]

3.7.3.1
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
illustrates this. The relevant control and status bits for transmission and reception are
listed in
Table 11
Table 12
Data Sheet
Control/
Status Bit
Control
Status
Control/
Status Bit
Control
Status
Table 11
Handshake Procedure
Register
MOCR
MOSR
MSTA
Register
MOCR
MOSR
Transmit Direction
Receive Direction
and
Table
Bit
MXC
MIE
MDA
MAB
MAC
Bit
MRC
MRE
MDR
MER
12.
Function
MX Bit Control
Transmit Interrupt Enable
Data Acknowledged
Data Abort
Transmission Active
Function
MR Bit Control
Receive Interrupt Enable
Data Received
End of Reception
117
Description of Functional Blocks
PSB 21150
PSF 21150
2000-07-21
Figure 65