PEF2054 SIEMENS [Siemens Semiconductor Group], PEF2054 Datasheet - Page 258
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PEF2054
Manufacturer Part Number
PEF2054
Description
ICs for Communications
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.PEF2054.pdf
(269 pages)
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Figure 97
EPIC
8
8.1
The following pages contain some working sheets to facilitate the programming of the
EPIC. For several tasks (i.e. initialization, time slot switching, ...) the corresponding
registers are summarized in a way the programmer gets a quick overview on the
registers he has to use.
8.1.1
Semiconductor Group
PCM Interface
PMOD
PMD0..1 = PCM Mode, 00 = 0, 01 = 1, 10 = 2
PCR = PCM Clock Rate:
PSM = PCM Synchron Mode:
AIS0..1 = Alternative Input Section: (PCM mode dependent)
AIC0..1 = Alternative Input Comparison: (PCM mode dependent)
PBNR
BNR0..7 = Bit Number per Frame (mode dependent)
®
0 = equal to PCM data rate
1 = double PCM data rate (not for mode 2)
0 = frame synchr. with falling edge,
1 = rising edge of PDC
Mode 0:
Mode 1:
Mode 2:
Mode 0, 1: AIC0 = 0: no comparison, AIC0 = 1: RXD0 == RXD1
Mode 2:
Mode 0: BNR = number of bits – 1
Mode 1: BNR = (number of bits)/2 – 1
Mode 2: BNR = (number of bits)/4 – 1
Initialization Register Summary (working sheet)
Appendix
Working Sheets
Register Summary for EPIC
PMD
PCM Mode Register
PCM Bit Number Register
AIS = 0
AIS0 = 0: RXD1 = IN0, AIS0 = 1: RXD0 = IN0
AIS1 = 0: RXD3 = IN1, AIS1 = 1: RXD2 = IN1
AIS0 = 0
AIS1 = 0: RXD3 = IN, AIS = 1: RXD2 = IN
AIC1 = 0: no comparison, AIC1 = 1: RXD2 == RXD3
AIC0 = 0:
AIC1 = 0: no comparison, AIC1 = 1: RXD2 == RXD3
PCR
PSM
®
Initialization
BNR
258
RW, 20
RW, 22
AIS
H
H
(0
(1
H
H
+ RBS = 1), reset-val. = 00
+ RBS = 1), reset-val. = FF
AIC
PEB 2055
PEF 2055
Appendix
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