PRELIMINARY
PM4318 OCTLIU
DATASHEET
PMC- 2001578
ISSUE 3
OCTAL E1/T1/J1 LINE INTERFACE DEVICE
8
PIN DESCRIPTION
By convention, where a bus of eight pins indexed [8:1] is present, the index indicates to which
octant the pin applies. With TCLK[8:1], for example, TCLK[1] applies to octant #1, TCLK[2]
applies to octant #2, etc.
Pin Name
Type
Pin
No.
Function
T1 and E1 System Side Serial Clock and Data Interface
TCLK[1]/IDATA[1]
TCLK[2]/IDATA[2]
TCLK[3]/IDATA[3]
TCLK[4]/IDATA[4]
TCLK[5]/IDATA[5]
TCLK[6]/IDATA[6]
TCLK[7]/IDATA[7]
TCLK[8]/IDATA[8]
Input
U19
The Transmit Clock inputs (TCLK[8:1]) should be 1.544 MHz for
DS1 or 2.048 MHz for E1 data streams and are used to sample
W20
AA22 the corresponding TDP[8:1] and TDN[8:1] signals.
AA20
TCLK[8:1] share the same pins as the IDATA[8:1] inputs.
TCLK[8:1] are selected when SBI2CLK is tied low.
W2
V3
U4
V1
TDP[1]/ADATA[0]
TDP[2]/ADATA[1]
TDP[3]/ADATA[2]
TDP[4]/ADATA[3]
TDP[5]/ADATA[4]
TDP[6]/ADATA[5]
TDP[7]/ADATA[6]
TDP[8]/ADATA[7]
Input
W22
V19
Y21
Y19
Y2
Transmit Positive Data (TDP[8:1]). When in single-rail mode,
these inputs are the NRZ data signals to be transmitted. These
inputs can be configured to be active high or active low. When in
dual-rail mode, these inputs are the NRZ positive data signals to
be transmitted.
Y1
TDP[8:1] can be sampled on either the rising or falling edges of
the corresponding TCLK[8:1].
W1
U2
TDP[8:1] share the same pins as the ADATA[7:0] inputs.
TDP[8:1] are selected when SBI_EN and SBI2CLK are both tied
low.
TDN[1]/REFCLK
TDN[2]/AC1FP
TDN[3]/DC1FP
TDN[4]/ADP
Input
W21
Y22
Transmit Negative Data (TDN[8:1]). When in dual-rail mode,
these inputs are the NRZ negative data signals to be transmitted.
AA21 These inputs can be sampled on either the rising or falling edges
W18
AA1
V4
V2
U3
of the corresponding TCLK[8:1]. These input pins are ignored if
the device is configured for single-rail (unipolar) transmit mode.
TDN[5]/APL
TDN[6]/AV5
TDN[7]/ICLK_IN
TDN[8]/IFP_IN
TDN[8:1] share the same pins as the REFCLK, AC1FP, DC1FP,
ADP, APL, AV5, ICLK_IN and IFP_IN inputs. TDN[8:1] are
selected when SBI_EN and SBI2CLK are both tied low.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
13
PMC [ PMC-SIERRA, INC ]
