Preliminary Data Sheet
PT7D6555
Extended PCM Interface Controller
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Features
Switching Feature
• Board Controller for up to 32 ISDN or 64 analog
subscribers
• Non-blocking switch for 128 channels
• Switching of 16-, 32-, or 64-kbit/s channels
• Two consecutive 64-kbit/s channels can be
switched as a single 128-kbit/s channel
• Freely programmable time slot assignment for all
subscribers
• Two serial interfaces (PCM and CFI) programmable
over a wide data range (128 - 8192 kbit/s)
• Data rates of PCM and Configurable interface
independent from each other (data rate adaptation)
• PCM-interface
- Tristate control signals for external drivers
- Programmable clock shift
- Single or double data clock
• Configurable interface
- Configurable for IOM-, SLD- and PCM-
applications
- High degree of flexibility for datastream adaptation
- Programmable clock shift
- Single or double data clock
• Synchronous
µP-access
to two selected channels
Introduction
The PT7D6555 is a highly integrated controller circuit
optimized for analog and ISDN line card and central
switch applications. It provides the circuitry necessary
to manage up to 32 digital (ISDN or proprietary) or
64 analog subscribers.
PT7D6555 is dedicated to switch PCM data between
two serial interfaces, the system interface (PCM
interface) and the configurable interface (CFI). The
device performs non-blocking time and space
switching for up to 128 channels. Since the system
cost of the PT7D6555 is divided by the number of
lines it controls, an highly economical implementation
of digital or analog subscriber lines can be performed.
Applications
•
•
•
•
Digital line cards with different architectures,
Central control units of key systems,
Analog line cards,
Concentrators.
Ordering Information
Pa r t Nu m b er
PT7D6555J
Pa ck a ge
44 - Pin PLCC
Handling of Layer-1 Functions
• Change detection for C/I-channel (IOM-configura-
tion) or feature control (SLD-configuration)
• Double last-look logic for C/I-channel (IOM-2
analog configuration)
• Additional last-look logic for feature control (SLD-
configuration)
• Buffered monitor (IOM-configuration) or
signalling channel (SLD-configuration)
Bus Interface
• Intel or Motorola type
µP-interface
• 8-bit demultiplexed bus interface
• FIFO-access interrupt
PT0105(08/02)
Ver:0
1
Preliminary Data Sheet
PT7D6555
Extended PCM Interface Controller
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Block Diagram
RES
DCL/SCL
FSC/DIR
DD0/SIP0
DU0/SIP4
DD1/SIP1
DU1/SIP5
DD2/SIP2
DU2/SIP6
DD3/SIP3
DU3/SIP7
Timing
PDC
PFS
RxD0
TxD0
TSC0
RxD1
TxD1
TSC1
RxD2
TxD2
TSC2
RxD3
TxD3
TSC3
Data Memory
Configu-
ration
Interface
PCM
Interface
Control Memory
Layer 1
Controller
Buffer
uP Interface
AD7 - 0 WR RD ALE CS INT A3 - 0
PT0105(08/02)
2
Ver:0
Preliminary Data Sheet
PT7D6555
Extended PCM Interface Controller
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Contents
Features ....................................................................................................................................................... 1
Applications ................................................................................................................................................ 1
Introduction ................................................................................................................................................. 1
Ordering Information .................................................................................................................................. 1
Block Diagram ............................................................................................................................................ 2
Pin Information ........................................................................................................................................... 5
Pin Configuration ................................................................................................................................. 5
Pin Description ..................................................................................................................................... 6
Typical Applications .................................................................................................................................... 8
Digital Line Card .................................................................................................................................. 8
Analog Line Card ............................................................................................................................... 10
Packet Handlers .................................................................................................................................. 11
Functional Description .............................................................................................................................. 14
Bus Interface ....................................................................................................................................... 14
PCM Interface .................................................................................................................................... 14
Configurable Interface ........................................................................................................................ 14
Memory Structure and Switching ....................................................................................................... 15
Pre-processed Channels, Layer-1 Support .......................................................................................... 16
Special Functions ................................................................................................................................ 16
Operational Description ............................................................................................................................ 17
Microprocessor Interface Operation.................................................................................................... 17
Clocking ............................................................................................................................................. 17
Reset ................................................................................................................................................... 17
Operation ............................................................................................................................................ 18
Initialization Procedure ....................................................................................................................... 23
(To be Cont’d)
PT0105(08/02)
3
Ver:0
Preliminary Data Sheet
PT7D6555
Extended PCM Interface Controller
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Register ..................................................................................................................................................... 25
Address Assignment ........................................................................................................................... 25
PCM Interface Registers ..................................................................................................................... 26
PCM-Mode Register (PMOD) ....................................................................................................................................26
Bit Number per PCM-Frame (PBNR) .........................................................................................................................27
PCM-Offset Downstream Register (POFD) .................................................................................................................27
PCM-Offset Upstream Register (POFU) ......................................................................................................................27
PCM-Clock Shift Register (PCSR) .............................................................................................................................28
PCM-Input Comparison Mismatch (PICM) ............................................................................................................... 28
Configurable Interface Registers ......................................................................................................... 29
Configurable Interface Mode Register 1 (CMD1) .....................................................................................................29
Configurable Interface Mode Register 2 (CMD2) .....................................................................................................30
Configurable Interface Bit Number Register (CBNR) ...............................................................................................32
Configurable Interface Time Slot Adjustment Register (CTAR) ...............................................................................32
Configurable Interface Bit Shift Register (CBSR) .....................................................................................................32
Configurable Interface Subchannel Register (CSCR) ................................................................................................33
Memory Access Registers ................................................................................................................... 34
Memory Access Control Register (MACR) ................................................................................................................34
Memory Access Address Register (MAAR) ................................................................................................................36
Memory Access Data Register (MADR) ..................................................................................................................... 36
Synchronous Transfer Registers ......................................................................................................... 37
Synchronous Transfer Data Register A (STDA) ..........................................................................................................37
Synchronous Transfer Data Register B (STDB) ......................................................................................................... 37
Synchronous Transfer Receive Address Register A (SARA) ......................................................................................37
Synchronous Transfer Receive Address Register B (SARB) ......................................................................................37
Synchronous Transfer Transmit Address Register A (SAXA) .....................................................................................38
Synchronous Transfer Transmit Address Register B (SAXB) .....................................................................................38
Synchronous Transfer Control Register (STCR) ........................................................................................................39
Monitor/Feature Control Registers ...................................................................................................... 39
MF-Channel Active Indication Register (MFAIR) .....................................................................................................39
Monitor/Feature Control Channel FIFO (MFFIFO) ................................................................................................... 40
MF-Channel Subscriber Address Register (MFSAR) .................................................................................................40
Status/Control Registers...................................................................................................................... 41
Signaling FIFO (CIFIFO) ............................................................................................................................................41
Timer Register (TIMR) ...............................................................................................................................................41
Status Register (STAR) ...............................................................................................................................................42
Command Register (CMDR) ......................................................................................................................................43
Mask Register (MASK) ..............................................................................................................................................44
Operation Mode Register (OMDR) ............................................................................................................................45
Version Number Status Register (VNSR) ...................................................................................................................46
Detailed Specification ............................................................................................................................... 47
Absolute Maximum Ratings ............................................................................................................... 47
Recommended Operating Conditions ................................................................................................. 47
DC Electrical, Power Supply and Capacitance Characteristics........................................................... 48
AC Electrical Characteristics .............................................................................................................. 48
Notes ......................................................................................................................................................... 55
PT0105(08/02)
Ver:0
4
Preliminary Data Sheet
PT7D6555
Extended PCM Interface Controller
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Pin Information
Pin Configuration
28
27
26
25
24
23
22
21
20
19
R/W/WR
CS
ALE
INT
DCL
FSC
DU3/SIP7
DU2/SIP6
DU1/SIP5
DU0/SIP4
A3
18
DS/RD
GND
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
A2
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
1
2
3
4
5
6
17
16
15
14
44-Pin PLCC
13
12
11
10
9
8
7
PDC
PFS
TxD3
TSC3
TxD2
TSC2
TxD1
TSC1
TxD0
TSC0
A1
PT0105(08/02)
DD0/SIP0
DD1/SIP1
DD2/SIP2
DD3/SIP3
RES
V
CC
A0
RxD3
RxD2
RxD1
RxD0
Top View
5
Ver:0