psf21911 ETC-unknow, psf21911 Datasheet - Page 59

• Manufacturer Part Number: psf21911
• Description: Isdn Echocancellation Circuit Terminal Applications Iec-q
• Manufacturer: ETC-unknow

2.5.5
Local functions are controlled via MON-8-commands. The following tables give an
overview of structure and features of commands belonging to this category.
Format of MON-8-Messages
r:
D0…7 Local command – 00 … FF
The following local commands are defined. If a response is expected, it will comprise 4
bytes (2 messages a 2 bytes) if the value of an internal coefficient is returned, and 2
bytes in all other cases.
In a two-byte response the first byte will indicate that a MON-8 answer is transmitted, the
second byte contains the requested information. This procedure is repeated for a four-
byte transfer (MON-8, Info 1, MON-8, Info 2).
Table 13
r
0
0
Semiconductor Group
Code
D7-D0 (Bin) D
1011 1110
1011 1111
MON-8
1 0 0 0
Register address – 0 = local function register
Mon-8 Local Function Commands
Local Functions (MON-8)
1. Byte
Direction
Register | Addr.
– 1 = internal register
– 00 … FF
r | 0 0 0
U
PACA
PACE
H
H
= local function code
= internal register address
Function
Local Commands
Partial Activation Control External. With the
PACE-command issued, the U-transceiver will
ignore the actual status of the received UOA-bit
and behave as if the UOA-bit was set to (1).
After issuing PACE the UOA/SAI-bits can be
controlled by MON-2-commands.
Partial Activation Control Automatic. PACA
enables the device to interpret the UOA-bit and
control the SAI-bit automatically. Partial
activation and deactivation is therefore possible.
The U-transceiver is automatically reset into this
mode in the states “Test”, “Receive Reset” and
“Tear Down”.
59
Local Command (Message/Data)
D7 D6 D5 D4 D3 D2 D1 D0
2. Byte
U-Transceiver
PSB 21911
PSF 21911
11.97