CSR8635 View Datasheet(PDF) - CSR plc

Part Name

Description

Manufacturer

CSR8635

The CSR8635 QFN single-chip Bluetooth® audio ROM device targets mid-range stereo speakers and headsets.

CSR plc 

Symbol

Parameter

Min

Typ

Max

Unit

fsclk

PCM clock frequency (Slave mode: input)

64

-

(a)

kHz

fsclk

PCM clock frequency (GCI mode)

128

-

(b)

kHz

tsclkl

PCM_CLK low time

200

-

-

ns

tsclkh

PCM_CLK high time

200

-

-

ns

thsclksynch

Hold time from PCM_CLK low to PCM_SYNC high

2

-

-

ns

013 tsusclksynch

Set-up time for PCM_SYNC high to PCM_CLK low

20

-

-

mber 27, 2 tdpout

Delay time from PCM_SYNC or PCM_CLK,

whichever is later, to valid PCM_OUT data (Long

-

Frame Sync only)

-

20

epte tdsclkhpout

Delay time from CLK high to PCM_OUT valid data

-

-

15

- Friday, S tdpoutz

Delay time from PCM_SYNC or PCM_CLK low,

whichever is later, to PCM_OUT data line high

-

impedance

-

15

om.cn tsupinsclkl

Set-up time for PCM_IN valid to CLK low

20

-

-

oint.c thpinsclkl

Hold time for PCM_CLK low to PCM_IN invalid

2

-

-

excelp Table 9.7: PCM Slave Timing

u - (a) Max frequency is the frequency defined by PSKEY_PCM_MIN_CPU_CLOCK

ho (b) Max frequency is twice the frequency defined by PSKEY_PCM_MIN_CPU_CLOCK

qingbo keven.z PCM_CLK

f

sclk

t

sclkh

t

tsclkl

Prepared for PCM_SYNC

t

hsclksynch

t

susclksynch

ns

ns

ns

ns

ns

ns

PCM_OUT

t

dpout

MSB (LSB)

t

dsclkhpout

t ,t

rf

LSB (MSB)

t

dpoutz

t

dpoutz

PCM_IN

t

supinsclkl

t

hpinsclkl

MSB (LSB)

LSB (MSB)

Figure 9.18: PCM Slave Timing Long Frame Sync

Production Information

© Cambridge Silicon Radio Limited 2013

Confidential Information - This Material is Subject to CSR's Non-disclosure Agreement

Page 52 of 105

CS-303725-DSP5

www.csr.com

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