SP3508EB Exar Corporation, SP3508EB Datasheet - Page 11

• Manufacturer Part Number: SP3508EB
• Description: LIN Transceivers 20Mbps Multiprotocol Transceiver 8Ch 3.3V
• Manufacturer: Exar Corporation
• Series: -r

Specifications of SP3508EB

• Main Purpose: Interface, Transceiver RS-232, RS-449, EIA-530(A), X.21
• Embedded: No
• Utilized Ic / Part: SP3508
• Primary Attributes: Internal Line or Digital Loopback Testing
• Secondary Attributes: 8 Drivers and 8 Receivers
• Lead Free Status / Rohs Status: Details

Figure 8 shows 3-pin jumper configuration and Table 5 describes the fuctionalities of each
jumper setting configuration.
TABLE 5. SP3508 LOGIC JUMPER SETTING
Date: 8/26/04
JP1 - JP4 are set of jumpers that the user can select which signals to be accessed by DB25.
Figure 9 shows 3-pin jumper configuration and Table 5 describes the signal to be accessed
by DB25 per its configuration.
Figure 9. 3-Pin Jumper Configuration
LOOPBACK
TERM_OFF
D_LATCH
/TXCEN
/RRTEN
RRCEN
Switch
/DMEN
/RDEN
/CSEN
/RTEN
SDEN
RSEN
/LLEN
TMEN
STEN
TREN
RLEN
/ICEN
TTEN
D0
D1
D2
Jumper
JP22
JP23
JP24
JP25
JP20
JP21
JP41
JP40
JP39
JP38
JP37
JP36
JP35
JP34
JP33
JP32
JP31
JP30
JP29
JP28
JP27
JP26
1
3
2
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
VCC (2-3)
LOGIC 1
Figure 8. 3-Pin Jumper Configuration
SP3508 Evaluation Board Manual
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
GND (1-2)
LOGIC 2
1
11
TABLE 6. SP3508 JUMPER SETTINGS
2
Signal
to be accessed
by DB25
STa
TxCa
STb
TxCb
RRTa
RRCa
RRTb
RRCb
DECODER
DECODER
DECODER
Logic 0 indicates SP508 is in LOOPBACK mode
Logic 1 internal termination is disables
Logic 0 Latch is disabled
Logic 1 TXD driver is enabled
Logic 1 TXCE driver is enabled
Logic 1 ST driver is enabled
Logic 1 RTS driver is enabled
Logic 1 DTR driver is enabled
Logic 1 DCD_DCE driver is enabled
Logic 1 SD driver is enabled
Logic 0 LL driver is enabled
Logic 0 RXD receiver is enabled
Logic 0 RXT receiver is enabled
Logic 0 TXC receiver is enabled
Logic 0 CTS receiver is enabled
Logic 0 DSR receiver is enabled
Logic 0 DCD_DTE receiver is enabled
Logic 0 RI receiver is enabled
Logic 1 TM receiver is enabled
3
Jumper
JP3
JP4
JP1
JP1
JP2
JP2
JP3
JP4
© Copyright 2004 Sipex Corporation
Configuration
Jumper
1-2
2-3
1-2
2-3
1-2
2-3
1-2
2-3