psf2115 ETC-unknow, psf2115 Datasheet - Page 153

• Manufacturer Part Number: psf2115
• Description: Isdn Adapter Circuit Ipac
• Manufacturer: ETC-unknow

PSB 2115
PSF 2115
Functional Description
PCM Transmit Line - PCMOUT
By default the B-channel from the DD line (POTA1/2:DUDD=0) is connected to the PCM
transmit line PCMOUT, so 8-bit data which is received by the IPAC from the S interface
on DD (LT-T mode), is transmitted to an external device via the PCM interface.
The B-channel from the DU line (POTA1/2:DUDD=1) can also be switched to the
transmit line of the PCM interface PCMOUT. This is necessary in LT-S mode where the
direction of IOM-2 data lines is inverted (see chapter 2.7.2) or it may be used for test
purposes.
B-channel data from DD (default) or DU (optional) is mapped to one of up to 32 (DCL =
4.096 MHz) or 12 (DCL = 1.536 MHz) programmable timeslots (POTA1/2:TNTX) on
PCMOUT.
PCM Receive Line - PCMIN
By default the B-channel from the DU line (PITA1/2:DUDD=0) is connected to the PCM
receive line PCMIN, so 8-bit data which is received on the PCM interface from an
external device is transmitted by the IPAC to the S interface on DU (LT-T mode).
The B-channel from the DD line (PITA1/2:DUDD=0) can also be switched to the receive
line of the PCM interface PCMIN. As described above this is used in LT-S mode or for
test purposes.
Data from one of up to 32 (DCL = 4.096 MHz) or 12 (DCL = 1.536 MHz) programmable
timeslots (PITA1/2:TNRX) on PCMIN is mapped to the B-channel timeslot on DU
(default) or DD (optional).
Semiconductor Group
153
11.97