Maxim Integrated DS21Q55 User Manual
Page 24

Product Preview
DS21Q55
24 of 248
012103
Please contact
or search
http://www.maxim-ic.com
for updated
information.
PIN
SYMBOL
TYPE
DESCRIPTION
A20
DVSS2
–
Digital Signal Ground.
B11
DVSS2
–
Digital Signal Ground.
A5
DVSS3
–
Digital Signal Ground.
B7
DVSS3
–
Digital Signal Ground.
B9
DVSS3
–
Digital Signal Ground.
H20
DVSS4
–
Digital Signal Ground
L20
DVSS4
–
Digital Signal Ground
N17
DVSS4
–
Digital Signal Ground
J4
ESIBRD1
–
Extended System Information Bus Read, Transceiver # 1.
C13
ESIBRD2
–
Extended System Information Bus Read, Transceiver # 2.
C3
ESIBRD3
–
Extended System Information Bus Read, Transceiver # 3.
U13
ESIBRD4
–
Extended System Information Bus Read, Transceiver # 4.
W6
ESIBS0_1
I/O
Extended System Information Bus 0, Transceiver # 1.
F18
ESIBS0_2
I/O
Extended System Information Bus 0, Transceiver # 2.
D7
ESIBS0_3
I/O
Extended System Information Bus 0, Transceiver # 3.
T20
ESIBS0_4
I/O
Extended System Information Bus 0, Transceiver # 4.
V9
ESIBS1_1
I/O
Extended System Information Bus 1, Transceiver # 1.
B17
ESIBS1_2
I/O
Extended System Information Bus 1, Transceiver # 2.
A6
ESIBS1_3
I/O
Extended System Information Bus 1, Transceiver # 3.
J20
ESIBS1_4
I/O
Extended System Information Bus 1, Transceiver # 4.
U1
INT*
O
Interrupt.
Y15
JTCLK
I
JTAG Clock.
N1
JTDI
I
JTAG Data Input, Transceiver #1
V19
JTDO
O
JTAG Data Output. Transceiver #4
W13
JTMS
I
JTAG Test Mode Select.
V18
JTRST*
I
JTAG Reset.
K2
LIUC
I
Line Interface Connect.
T1
MCLK1
I
Master Clock, Transceiver #1 and, Transceiver #3.
W20
MCLK2
I
Master Clock, Transceiver #2 and, Transceiver #4.
U10
MUX
I
Mux Bus Select.
M2
RCHBLK1
O
Receive Channel Block, Transceiver #1.
G17
RCHBLK2
O
Receive Channel Block, Transceiver #2.
G4
RCHBLK3
O
Receive Channel Block, Transceiver #3.
Y12
RCHBLK4
O
Receive Channel Block, Transceiver #4.
J1
RCHCLK1
O
Receive Channel Clock, Transceiver #1.
D14
RCHCLK2
O
Receive Channel Clock, Transceiver #2.
F3
RCHCLK3
O
Receive Channel Clock, Transceiver #3.
U14
RCHCLK4
O
Receive Channel Clock, Transceiver #4.
N3
RCLK1
O
Receive Clock Output from the Framer, Transceiver #1.
B13
RCLK2
O
Receive Clock Output from the Framer, Transceiver #2.
E3
RCLK3
O
Receive Clock Output from the Framer, Transceiver #3.
M18
RCLK4
O
Receive Clock Output from the Framer, Transceiver #4.
M4
RCLKI1
I
Receive Clock Input for the LIU, Transceiver #1.
A15
RCLKI2
I
Receive Clock Input for the LIU, Transceiver #2.
A4
RCLKI3
I
Receive Clock Input for the LIU, Transceiver #3.
R17
RCLKI4
I
Receive Clock Input for the LIU, Transceiver #4.
M3
RCLKO1
O
Receive Clock Output from the LIU, Transceiver #1.
C14
RCLKO2
O
Receive Clock Output from the LIU, Transceiver #2.
B4
RCLKO3
O
Receive Clock Output from the LIU, Transceiver #3.
T17
RCLKO4
O
Receive Clock Output from the LIU, Transceiver #4.
N2
RD*(DS*)
I
Read Input (Data Strobe)
K4
RFSYNC1
O
Receive Frame Sync (before the receive elastic store), Transceiver