Rockwell SoniCrafter BT8960 - Manual (Page 12)

2
1.0 System Overview
1.1 Functional Summary
Bt8960
Single-Chip 2B1Q Transceiver
N8960DSB
The Bt8960 comprises five major functions: a transmit section, a receive sec-
tion, a timing recovery and clock interface, a microcomputer interface, and a test
and diagnostic interface. Figure 1-2 details the connections within and between
each of these functional blocks.
Figure 1-2. Bt8960 Detailed Block Diagram
Echo
Canceler
Timing
Recovery/
Crystal
Amplifier
Diag-
nostics
JTAG
Receive Section
Microcomputer
Interface and
System Control
Transmit Section
TBCLK
MOTEL
ALE
CS
RD/DS
WR/R/W
AD[7:0]
IRQ
RST
TXP
TXN
RQ[0]/BCLK
SMON
TMS
TDI
TCK
TDO
TQ[1]/TDAT
TQ[0]
VGA
PLL
Voltage
Reference
Generator
Pulse-
Shaping
Filter
Variable-
Line
Driver
TXPSN
TXPSP
TXLDIN
TXLDIP
Control
and
Status
Registers
Timers
Micro-
Computer
Interface
READY
ADDR[7:0]
RXP
RXN
RXBP
RXBN
MUXED
Gain
DAC
ADC
Digital
Front
End
Equalizer Detector
Receive
Channel
Unit
Interface
RQ[1]/RDAT
RBCLK
HCLK
QCLK
XTALI/MCLK
XTALO
XOUT
RBIAS
VCOMO
VCOMI
VCCAP
VRXP,VRXN
VTXP,VTXN
Transmit
Channel
Unit
Interface
Symbol
Source/
Scrambler