Avago Technologies LSI53C876E - Manual (Page 51)

SCSI Functional Description 2-29
Note: If the LSI53C876 is to be used in a design with only an
8-bit SCSI bus, all 16 data lines must still be terminated or
pulled high. Active termination is required for Wide Ultra
SCSI synchronous transfers.
Figure 2.6 Regulated Termination
TERML1
TERML2
TERML3
TERML4
TERML5
TERML6
TERML7
TERML8
TERML9
TERML10
TERML11
TERML12
TERML13
TERML14
TERML15
TERML16
TERML17
TERML18
SD0 (J1.40)
SD1 (J1.41)
SD2 (J1.42)
SD3 (J1.43)
SD4 (J1.44)
SD5 (J1.45)
SD6 (J1.46)
SD7 (J1.47)
SDP (J1.48)
ATN (J1.55)
BSY (J1.57)
ACK (J1.58)
RST (J1.59)
MSG (J1.60)
SEL (J1.61)
C/D (J1.62)
REQ (J1.63)
I/O (J1.64)
20
21
22
23
24
25
26
27
28
3
4
5
6
7
8
9
10
11
19
DISCONNECT
REG_OUT
2
2.85 V
UC5601QP
C1 C2
Notes:
• C1 - 10
µ
F SMT
• C2 - 0.1
µ
F SMT
• C3 - 2.2
µ
F SMT
• J1 - 68-pin, high density “P” connector
TERML1
TERML2
TERML3
TERML4
TERML5
TERML6
TERML7
TERML8
TERML9 SD15 (J1.38)
SD14 (J1.37)
SD13 (J1.36)
SD12 (J1.35)
SD11 (J1.68)
SD10 (J1.67)
SD9 (J1.66)
SD8 (J1.65)
SDP1 (J1.39)
10
9
8
7
3
2
1
16
15
REG_OUT
14
UC5603DP
C3
6
DISCONNECT