Datasheet
____________________________________________________ DS34T101, DS34T102, DS34T104, DS34T108
18 of 366
6
Block Diagram
Figure 6-1. Top-Level Block Diagram
LIU
Transmitter
Waveshape,
Line Driver
LIU
Receiver
Clock and Data
Recovery
Rx
BERT
Rx Framer
Rx
HDLC
TDMoP Block
all 8 ports
Clock
Recovery
Machines
Timeslot
Assigner
CAS
Handler
SDRAM
Controller
Jitter
Buffer
Control
Queue
Manager
Ethernet
MAC
10/100
Packet
Classifier
Counters
& Status
Registers
CPU
Interface
SD_D[31:0]
SD_DQM[3:0]
SD_A[11:0]
SD_BA[1:0]
SD_CLK
SD_CS_N
SD_WE_N
SD_RAS_N
SD_CAS_N
CLK_MII_RX
MII_RXD[3:0]
MII_RX_DV
MII_RX_ERR
MII_COL
MII_CRS
CLK_MII_TX
CLK_SSMII_TX
MII_TXD[3:0]
MII_TX_EN
MDIO
MDC
CLK_SYS
CLK_HIGH
H_D[31:1]
H_AD[24:1]
H_CS_N
H_R_W_N
H_WR_BE[0]_N / SPI_CLK
H_READY_N
H_INT[1:0]
DATA_31_16_N
RST_SYS_N
JTAG
JTMS
JTCLK
JTDI
JTDO
JTRST_N
TTIPn
TRINGn
RTIPn
RRINGn
LIU & Framer (1 of 8)
MCLK
TXENABLE
RXTSEL
RESREF
TCLKOn
MII_TX_ERR
CLAD1
38.88MHz
2.048/1.544MHz
CLAD2
50 or 75MHz
CLK_SYS_S
CLK_CMN
Payload Type
Machines
AAL1
HDLC
SAToP
CESoPSN
RAW
SCEN
SCAN
MBIST
STMD
MBIST_EN
MBIST_DONE
MBIST_FAIL
HIZ_EN
E1CLK
T1CLK
B8ZS/HDB3
Decoder
E1CLK
T1CLK
RCLKn (out)/RCLKFn (in)
RDATFn
Rx Elastic Store
TDATFn
B8ZS/HDB3
Encoder
Tx Formatter
Tx Elastic Store
Tx
BERT
Tx
HDLC
TCLKFn
FSYSCLK
Jitter Attenuator
RSYNCn
RLOFn/RLOSn
RSERn
RFSYNCn/RMSYNCn
TDMn_RCLK
TDMn_RX
TDMn_RSIG_RTS
TSYSCLKn/ECLKn
TSERn
TSYNCn/TSSYNCn
TDMn_TX
TDMn_ACLK
TDMn_TSIG_CTS
E1CLK
T1CLK
FSYSCLK
TDMn_TX_MF_CD
TDMn_TX_SYNC
TDMn_TCLK
clk
clkneg
neg pos/dat
0101
LIUDn
LIUDn
LIUDn
clkneg
pos/dat
pos/dat
clkneg pos/dat
RCLK
RSIG
888
1 of 8 ports
all 8 ports
888
TDM Cross-Connection
and External Interfaces
TDMn_RX_SYNC
888
RF/MSYNC
8
8
TCLK
TSIG
TSER (data)
T(S)SYNC in
8
88
Control
Bank Select
Address
Byte Enable Mask
Data
RCLK
RSIG_RTS
RX (data)
RX_SYNC
TCLK
TSIG_CTS
TX (data)
TX_SYNC
88
RSYSCLKn
8
RSYSCLK
TSYNC out
8
8
RSYNC in
8
TSYSCLK
E1CLK
T1CLK
RSER
(data)
RCLK
8
RSYNC out
8
8
H_CPU_SPI_N
H_D[0] / SPI_MISO
H_WR_BE[1]_N / SPI_MOSI
H_WR_BE[2]_N / SPI_SEL_N
H_WR_BE[3]_N / SPI_CI
Figure 6-2